root / lib / cmdlib.py @ 4f0afaf5
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# Copyright (C) 2006, 2007, 2008 Google Inc.
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#
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# This program is free software; you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation; either version 2 of the License, or
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# (at your option) any later version.
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#
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# This program is distributed in the hope that it will be useful, but
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# WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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# General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with this program; if not, write to the Free Software
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# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
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# 02110-1301, USA.
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"""Module implementing the master-side code."""
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# pylint: disable-msg=W0613,W0201
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import os |
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import os.path |
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import sha |
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import time |
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import tempfile |
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import re |
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import platform |
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from ganeti import rpc |
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from ganeti import ssh |
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from ganeti import logger |
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from ganeti import utils |
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from ganeti import errors |
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from ganeti import hypervisor |
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from ganeti import locking |
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from ganeti import constants |
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from ganeti import objects |
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from ganeti import opcodes |
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from ganeti import serializer |
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class LogicalUnit(object): |
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"""Logical Unit base class.
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Subclasses must follow these rules:
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- implement ExpandNames
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- implement CheckPrereq
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- implement Exec
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- implement BuildHooksEnv
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- redefine HPATH and HTYPE
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- optionally redefine their run requirements:
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REQ_MASTER: the LU needs to run on the master node
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REQ_WSSTORE: the LU needs a writable SimpleStore
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REQ_BGL: the LU needs to hold the Big Ganeti Lock exclusively
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Note that all commands require root permissions.
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"""
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HPATH = None
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HTYPE = None
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_OP_REQP = [] |
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REQ_MASTER = True
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REQ_WSSTORE = False
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REQ_BGL = True
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def __init__(self, processor, op, context, sstore): |
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"""Constructor for LogicalUnit.
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This needs to be overriden in derived classes in order to check op
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validity.
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"""
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self.proc = processor
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self.op = op
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self.cfg = context.cfg
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self.sstore = sstore
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self.context = context
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self.needed_locks = None |
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self.share_locks = dict(((i, 0) for i in locking.LEVELS)) |
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# Used to force good behavior when calling helper functions
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self.recalculate_locks = {}
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self.__ssh = None |
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for attr_name in self._OP_REQP: |
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attr_val = getattr(op, attr_name, None) |
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if attr_val is None: |
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raise errors.OpPrereqError("Required parameter '%s' missing" % |
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attr_name) |
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if not self.cfg.IsCluster(): |
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raise errors.OpPrereqError("Cluster not initialized yet," |
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" use 'gnt-cluster init' first.")
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if self.REQ_MASTER: |
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master = sstore.GetMasterNode() |
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if master != utils.HostInfo().name:
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raise errors.OpPrereqError("Commands must be run on the master" |
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" node %s" % master)
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def __GetSSH(self): |
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"""Returns the SshRunner object
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"""
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if not self.__ssh: |
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self.__ssh = ssh.SshRunner(self.sstore) |
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return self.__ssh |
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ssh = property(fget=__GetSSH)
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def ExpandNames(self): |
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"""Expand names for this LU.
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This method is called before starting to execute the opcode, and it should
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update all the parameters of the opcode to their canonical form (e.g. a
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short node name must be fully expanded after this method has successfully
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completed). This way locking, hooks, logging, ecc. can work correctly.
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LUs which implement this method must also populate the self.needed_locks
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member, as a dict with lock levels as keys, and a list of needed lock names
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as values. Rules:
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- Use an empty dict if you don't need any lock
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- If you don't need any lock at a particular level omit that level
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- Don't put anything for the BGL level
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- If you want all locks at a level use None as a value
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(this reflects what LockSet does, and will be replaced before
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CheckPrereq with the full list of nodes that have been locked)
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If you need to share locks (rather than acquire them exclusively) at one
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level you can modify self.share_locks, setting a true value (usually 1) for
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that level. By default locks are not shared.
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Examples:
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# Acquire all nodes and one instance
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self.needed_locks = {
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locking.LEVEL_NODE: None,
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locking.LEVEL_INSTANCES: ['instance1.example.tld'],
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}
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# Acquire just two nodes
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self.needed_locks = {
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locking.LEVEL_NODE: ['node1.example.tld', 'node2.example.tld'],
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}
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# Acquire no locks
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self.needed_locks = {} # No, you can't leave it to the default value None
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"""
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# The implementation of this method is mandatory only if the new LU is
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# concurrent, so that old LUs don't need to be changed all at the same
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# time.
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if self.REQ_BGL: |
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self.needed_locks = {} # Exclusive LUs don't need locks. |
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else:
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raise NotImplementedError |
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def DeclareLocks(self, level): |
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"""Declare LU locking needs for a level
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While most LUs can just declare their locking needs at ExpandNames time,
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sometimes there's the need to calculate some locks after having acquired
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the ones before. This function is called just before acquiring locks at a
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particular level, but after acquiring the ones at lower levels, and permits
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such calculations. It can be used to modify self.needed_locks, and by
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default it does nothing.
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This function is only called if you have something already set in
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self.needed_locks for the level.
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@param level: Locking level which is going to be locked
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@type level: member of ganeti.locking.LEVELS
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"""
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def CheckPrereq(self): |
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"""Check prerequisites for this LU.
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This method should check that the prerequisites for the execution
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of this LU are fulfilled. It can do internode communication, but
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it should be idempotent - no cluster or system changes are
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allowed.
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The method should raise errors.OpPrereqError in case something is
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not fulfilled. Its return value is ignored.
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This method should also update all the parameters of the opcode to
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their canonical form if it hasn't been done by ExpandNames before.
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"""
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raise NotImplementedError |
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def Exec(self, feedback_fn): |
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"""Execute the LU.
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This method should implement the actual work. It should raise
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errors.OpExecError for failures that are somewhat dealt with in
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code, or expected.
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"""
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raise NotImplementedError |
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def BuildHooksEnv(self): |
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"""Build hooks environment for this LU.
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This method should return a three-node tuple consisting of: a dict
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containing the environment that will be used for running the
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specific hook for this LU, a list of node names on which the hook
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should run before the execution, and a list of node names on which
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the hook should run after the execution.
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The keys of the dict must not have 'GANETI_' prefixed as this will
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be handled in the hooks runner. Also note additional keys will be
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added by the hooks runner. If the LU doesn't define any
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environment, an empty dict (and not None) should be returned.
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No nodes should be returned as an empty list (and not None).
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Note that if the HPATH for a LU class is None, this function will
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not be called.
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"""
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raise NotImplementedError |
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def HooksCallBack(self, phase, hook_results, feedback_fn, lu_result): |
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"""Notify the LU about the results of its hooks.
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This method is called every time a hooks phase is executed, and notifies
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the Logical Unit about the hooks' result. The LU can then use it to alter
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its result based on the hooks. By default the method does nothing and the
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previous result is passed back unchanged but any LU can define it if it
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wants to use the local cluster hook-scripts somehow.
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Args:
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phase: the hooks phase that has just been run
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hooks_results: the results of the multi-node hooks rpc call
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feedback_fn: function to send feedback back to the caller
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lu_result: the previous result this LU had, or None in the PRE phase.
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"""
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return lu_result
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def _ExpandAndLockInstance(self): |
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"""Helper function to expand and lock an instance.
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Many LUs that work on an instance take its name in self.op.instance_name
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and need to expand it and then declare the expanded name for locking. This
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function does it, and then updates self.op.instance_name to the expanded
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name. It also initializes needed_locks as a dict, if this hasn't been done
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before.
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"""
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if self.needed_locks is None: |
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self.needed_locks = {}
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else:
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assert locking.LEVEL_INSTANCE not in self.needed_locks, \ |
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"_ExpandAndLockInstance called with instance-level locks set"
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expanded_name = self.cfg.ExpandInstanceName(self.op.instance_name) |
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if expanded_name is None: |
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raise errors.OpPrereqError("Instance '%s' not known" % |
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self.op.instance_name)
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self.needed_locks[locking.LEVEL_INSTANCE] = expanded_name
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self.op.instance_name = expanded_name
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def _LockInstancesNodes(self): |
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"""Helper function to declare instances' nodes for locking.
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This function should be called after locking one or more instances to lock
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their nodes. Its effect is populating self.needed_locks[locking.LEVEL_NODE]
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with all primary or secondary nodes for instances already locked and
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present in self.needed_locks[locking.LEVEL_INSTANCE].
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It should be called from DeclareLocks, and for safety only works if
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self.recalculate_locks[locking.LEVEL_NODE] is set.
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In the future it may grow parameters to just lock some instance's nodes, or
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to just lock primaries or secondary nodes, if needed.
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If should be called in DeclareLocks in a way similar to:
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if level == locking.LEVEL_NODE:
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self._LockInstancesNodes()
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"""
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assert locking.LEVEL_NODE in self.recalculate_locks, \ |
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"_LockInstancesNodes helper function called with no nodes to recalculate"
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# TODO: check if we're really been called with the instance locks held
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# For now we'll replace self.needed_locks[locking.LEVEL_NODE], but in the
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# future we might want to have different behaviors depending on the value
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# of self.recalculate_locks[locking.LEVEL_NODE]
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wanted_nodes = [] |
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for instance_name in self.needed_locks[locking.LEVEL_INSTANCE]: |
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instance = self.context.cfg.GetInstanceInfo(instance_name)
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wanted_nodes.append(instance.primary_node) |
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wanted_nodes.extend(instance.secondary_nodes) |
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self.needed_locks[locking.LEVEL_NODE] = wanted_nodes
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del self.recalculate_locks[locking.LEVEL_NODE] |
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class NoHooksLU(LogicalUnit): |
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"""Simple LU which runs no hooks.
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This LU is intended as a parent for other LogicalUnits which will
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run no hooks, in order to reduce duplicate code.
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"""
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HPATH = None
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HTYPE = None
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def _GetWantedNodes(lu, nodes): |
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"""Returns list of checked and expanded node names.
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Args:
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nodes: List of nodes (strings) or None for all
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"""
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if not isinstance(nodes, list): |
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raise errors.OpPrereqError("Invalid argument type 'nodes'") |
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if nodes:
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wanted = [] |
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for name in nodes: |
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node = lu.cfg.ExpandNodeName(name) |
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if node is None: |
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raise errors.OpPrereqError("No such node name '%s'" % name) |
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wanted.append(node) |
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else:
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wanted = lu.cfg.GetNodeList() |
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return utils.NiceSort(wanted)
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def _GetWantedInstances(lu, instances): |
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"""Returns list of checked and expanded instance names.
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Args:
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instances: List of instances (strings) or None for all
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"""
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if not isinstance(instances, list): |
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raise errors.OpPrereqError("Invalid argument type 'instances'") |
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if instances:
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wanted = [] |
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for name in instances: |
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instance = lu.cfg.ExpandInstanceName(name) |
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if instance is None: |
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raise errors.OpPrereqError("No such instance name '%s'" % name) |
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wanted.append(instance) |
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else:
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wanted = lu.cfg.GetInstanceList() |
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return utils.NiceSort(wanted)
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def _CheckOutputFields(static, dynamic, selected): |
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"""Checks whether all selected fields are valid.
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Args:
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static: Static fields
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dynamic: Dynamic fields
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"""
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static_fields = frozenset(static)
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dynamic_fields = frozenset(dynamic)
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all_fields = static_fields | dynamic_fields |
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if not all_fields.issuperset(selected): |
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raise errors.OpPrereqError("Unknown output fields selected: %s" |
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% ",".join(frozenset(selected). |
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difference(all_fields))) |
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def _BuildInstanceHookEnv(name, primary_node, secondary_nodes, os_type, status, |
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memory, vcpus, nics): |
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"""Builds instance related env variables for hooks from single variables.
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Args:
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secondary_nodes: List of secondary nodes as strings
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"""
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env = { |
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"OP_TARGET": name,
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"INSTANCE_NAME": name,
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"INSTANCE_PRIMARY": primary_node,
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"INSTANCE_SECONDARIES": " ".join(secondary_nodes), |
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"INSTANCE_OS_TYPE": os_type,
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"INSTANCE_STATUS": status,
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"INSTANCE_MEMORY": memory,
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"INSTANCE_VCPUS": vcpus,
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} |
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if nics:
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nic_count = len(nics)
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for idx, (ip, bridge, mac) in enumerate(nics): |
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if ip is None: |
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ip = ""
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env["INSTANCE_NIC%d_IP" % idx] = ip
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env["INSTANCE_NIC%d_BRIDGE" % idx] = bridge
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env["INSTANCE_NIC%d_HWADDR" % idx] = mac
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else:
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nic_count = 0
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env["INSTANCE_NIC_COUNT"] = nic_count
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return env
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def _BuildInstanceHookEnvByObject(instance, override=None): |
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"""Builds instance related env variables for hooks from an object.
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Args:
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instance: objects.Instance object of instance
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override: dict of values to override
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"""
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args = { |
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'name': instance.name,
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'primary_node': instance.primary_node,
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'secondary_nodes': instance.secondary_nodes,
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'os_type': instance.os,
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'status': instance.os,
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'memory': instance.memory,
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'vcpus': instance.vcpus,
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'nics': [(nic.ip, nic.bridge, nic.mac) for nic in instance.nics], |
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} |
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if override:
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args.update(override) |
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return _BuildInstanceHookEnv(**args)
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def _CheckInstanceBridgesExist(instance): |
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"""Check that the brigdes needed by an instance exist.
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"""
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# check bridges existance
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brlist = [nic.bridge for nic in instance.nics] |
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if not rpc.call_bridges_exist(instance.primary_node, brlist): |
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raise errors.OpPrereqError("one or more target bridges %s does not" |
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" exist on destination node '%s'" %
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(brlist, instance.primary_node)) |
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class LUDestroyCluster(NoHooksLU): |
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"""Logical unit for destroying the cluster.
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|
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"""
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_OP_REQP = [] |
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|
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def CheckPrereq(self): |
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"""Check prerequisites.
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This checks whether the cluster is empty.
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Any errors are signalled by raising errors.OpPrereqError.
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"""
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master = self.sstore.GetMasterNode()
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nodelist = self.cfg.GetNodeList()
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if len(nodelist) != 1 or nodelist[0] != master: |
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raise errors.OpPrereqError("There are still %d node(s) in" |
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" this cluster." % (len(nodelist) - 1)) |
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instancelist = self.cfg.GetInstanceList()
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if instancelist:
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raise errors.OpPrereqError("There are still %d instance(s) in" |
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" this cluster." % len(instancelist)) |
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def Exec(self, feedback_fn): |
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"""Destroys the cluster.
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"""
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master = self.sstore.GetMasterNode()
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if not rpc.call_node_stop_master(master, False): |
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raise errors.OpExecError("Could not disable the master role") |
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priv_key, pub_key, _ = ssh.GetUserFiles(constants.GANETI_RUNAS) |
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utils.CreateBackup(priv_key) |
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utils.CreateBackup(pub_key) |
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return master
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|
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class LUVerifyCluster(LogicalUnit): |
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"""Verifies the cluster status.
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|
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"""
|
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HPATH = "cluster-verify"
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HTYPE = constants.HTYPE_CLUSTER |
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_OP_REQP = ["skip_checks"]
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|
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def _VerifyNode(self, node, file_list, local_cksum, vglist, node_result, |
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remote_version, feedback_fn): |
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"""Run multiple tests against a node.
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|
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Test list:
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- compares ganeti version
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- checks vg existance and size > 20G
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- checks config file checksum
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- checks ssh to other nodes
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|
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Args:
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node: name of the node to check
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file_list: required list of files
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local_cksum: dictionary of local files and their checksums
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|
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"""
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# compares ganeti version
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local_version = constants.PROTOCOL_VERSION |
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if not remote_version: |
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feedback_fn(" - ERROR: connection to %s failed" % (node))
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return True |
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if local_version != remote_version:
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feedback_fn(" - ERROR: sw version mismatch: master %s, node(%s) %s" %
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(local_version, node, remote_version)) |
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return True |
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|
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# checks vg existance and size > 20G
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|
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bad = False
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if not vglist: |
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feedback_fn(" - ERROR: unable to check volume groups on node %s." %
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(node,)) |
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bad = True
|
529 |
else:
|
530 |
vgstatus = utils.CheckVolumeGroupSize(vglist, self.cfg.GetVGName(),
|
531 |
constants.MIN_VG_SIZE) |
532 |
if vgstatus:
|
533 |
feedback_fn(" - ERROR: %s on node %s" % (vgstatus, node))
|
534 |
bad = True
|
535 |
|
536 |
# checks config file checksum
|
537 |
# checks ssh to any
|
538 |
|
539 |
if 'filelist' not in node_result: |
540 |
bad = True
|
541 |
feedback_fn(" - ERROR: node hasn't returned file checksum data")
|
542 |
else:
|
543 |
remote_cksum = node_result['filelist']
|
544 |
for file_name in file_list: |
545 |
if file_name not in remote_cksum: |
546 |
bad = True
|
547 |
feedback_fn(" - ERROR: file '%s' missing" % file_name)
|
548 |
elif remote_cksum[file_name] != local_cksum[file_name]:
|
549 |
bad = True
|
550 |
feedback_fn(" - ERROR: file '%s' has wrong checksum" % file_name)
|
551 |
|
552 |
if 'nodelist' not in node_result: |
553 |
bad = True
|
554 |
feedback_fn(" - ERROR: node hasn't returned node ssh connectivity data")
|
555 |
else:
|
556 |
if node_result['nodelist']: |
557 |
bad = True
|
558 |
for node in node_result['nodelist']: |
559 |
feedback_fn(" - ERROR: ssh communication with node '%s': %s" %
|
560 |
(node, node_result['nodelist'][node]))
|
561 |
if 'node-net-test' not in node_result: |
562 |
bad = True
|
563 |
feedback_fn(" - ERROR: node hasn't returned node tcp connectivity data")
|
564 |
else:
|
565 |
if node_result['node-net-test']: |
566 |
bad = True
|
567 |
nlist = utils.NiceSort(node_result['node-net-test'].keys())
|
568 |
for node in nlist: |
569 |
feedback_fn(" - ERROR: tcp communication with node '%s': %s" %
|
570 |
(node, node_result['node-net-test'][node]))
|
571 |
|
572 |
hyp_result = node_result.get('hypervisor', None) |
573 |
if hyp_result is not None: |
574 |
feedback_fn(" - ERROR: hypervisor verify failure: '%s'" % hyp_result)
|
575 |
return bad
|
576 |
|
577 |
def _VerifyInstance(self, instance, instanceconfig, node_vol_is, |
578 |
node_instance, feedback_fn): |
579 |
"""Verify an instance.
|
580 |
|
581 |
This function checks to see if the required block devices are
|
582 |
available on the instance's node.
|
583 |
|
584 |
"""
|
585 |
bad = False
|
586 |
|
587 |
node_current = instanceconfig.primary_node |
588 |
|
589 |
node_vol_should = {} |
590 |
instanceconfig.MapLVsByNode(node_vol_should) |
591 |
|
592 |
for node in node_vol_should: |
593 |
for volume in node_vol_should[node]: |
594 |
if node not in node_vol_is or volume not in node_vol_is[node]: |
595 |
feedback_fn(" - ERROR: volume %s missing on node %s" %
|
596 |
(volume, node)) |
597 |
bad = True
|
598 |
|
599 |
if not instanceconfig.status == 'down': |
600 |
if (node_current not in node_instance or |
601 |
not instance in node_instance[node_current]): |
602 |
feedback_fn(" - ERROR: instance %s not running on node %s" %
|
603 |
(instance, node_current)) |
604 |
bad = True
|
605 |
|
606 |
for node in node_instance: |
607 |
if (not node == node_current): |
608 |
if instance in node_instance[node]: |
609 |
feedback_fn(" - ERROR: instance %s should not run on node %s" %
|
610 |
(instance, node)) |
611 |
bad = True
|
612 |
|
613 |
return bad
|
614 |
|
615 |
def _VerifyOrphanVolumes(self, node_vol_should, node_vol_is, feedback_fn): |
616 |
"""Verify if there are any unknown volumes in the cluster.
|
617 |
|
618 |
The .os, .swap and backup volumes are ignored. All other volumes are
|
619 |
reported as unknown.
|
620 |
|
621 |
"""
|
622 |
bad = False
|
623 |
|
624 |
for node in node_vol_is: |
625 |
for volume in node_vol_is[node]: |
626 |
if node not in node_vol_should or volume not in node_vol_should[node]: |
627 |
feedback_fn(" - ERROR: volume %s on node %s should not exist" %
|
628 |
(volume, node)) |
629 |
bad = True
|
630 |
return bad
|
631 |
|
632 |
def _VerifyOrphanInstances(self, instancelist, node_instance, feedback_fn): |
633 |
"""Verify the list of running instances.
|
634 |
|
635 |
This checks what instances are running but unknown to the cluster.
|
636 |
|
637 |
"""
|
638 |
bad = False
|
639 |
for node in node_instance: |
640 |
for runninginstance in node_instance[node]: |
641 |
if runninginstance not in instancelist: |
642 |
feedback_fn(" - ERROR: instance %s on node %s should not exist" %
|
643 |
(runninginstance, node)) |
644 |
bad = True
|
645 |
return bad
|
646 |
|
647 |
def _VerifyNPlusOneMemory(self, node_info, instance_cfg, feedback_fn): |
648 |
"""Verify N+1 Memory Resilience.
|
649 |
|
650 |
Check that if one single node dies we can still start all the instances it
|
651 |
was primary for.
|
652 |
|
653 |
"""
|
654 |
bad = False
|
655 |
|
656 |
for node, nodeinfo in node_info.iteritems(): |
657 |
# This code checks that every node which is now listed as secondary has
|
658 |
# enough memory to host all instances it is supposed to should a single
|
659 |
# other node in the cluster fail.
|
660 |
# FIXME: not ready for failover to an arbitrary node
|
661 |
# FIXME: does not support file-backed instances
|
662 |
# WARNING: we currently take into account down instances as well as up
|
663 |
# ones, considering that even if they're down someone might want to start
|
664 |
# them even in the event of a node failure.
|
665 |
for prinode, instances in nodeinfo['sinst-by-pnode'].iteritems(): |
666 |
needed_mem = 0
|
667 |
for instance in instances: |
668 |
needed_mem += instance_cfg[instance].memory |
669 |
if nodeinfo['mfree'] < needed_mem: |
670 |
feedback_fn(" - ERROR: not enough memory on node %s to accomodate"
|
671 |
" failovers should node %s fail" % (node, prinode))
|
672 |
bad = True
|
673 |
return bad
|
674 |
|
675 |
def CheckPrereq(self): |
676 |
"""Check prerequisites.
|
677 |
|
678 |
Transform the list of checks we're going to skip into a set and check that
|
679 |
all its members are valid.
|
680 |
|
681 |
"""
|
682 |
self.skip_set = frozenset(self.op.skip_checks) |
683 |
if not constants.VERIFY_OPTIONAL_CHECKS.issuperset(self.skip_set): |
684 |
raise errors.OpPrereqError("Invalid checks to be skipped specified") |
685 |
|
686 |
def BuildHooksEnv(self): |
687 |
"""Build hooks env.
|
688 |
|
689 |
Cluster-Verify hooks just rone in the post phase and their failure makes
|
690 |
the output be logged in the verify output and the verification to fail.
|
691 |
|
692 |
"""
|
693 |
all_nodes = self.cfg.GetNodeList()
|
694 |
# TODO: populate the environment with useful information for verify hooks
|
695 |
env = {} |
696 |
return env, [], all_nodes
|
697 |
|
698 |
def Exec(self, feedback_fn): |
699 |
"""Verify integrity of cluster, performing various test on nodes.
|
700 |
|
701 |
"""
|
702 |
bad = False
|
703 |
feedback_fn("* Verifying global settings")
|
704 |
for msg in self.cfg.VerifyConfig(): |
705 |
feedback_fn(" - ERROR: %s" % msg)
|
706 |
|
707 |
vg_name = self.cfg.GetVGName()
|
708 |
nodelist = utils.NiceSort(self.cfg.GetNodeList())
|
709 |
nodeinfo = [self.cfg.GetNodeInfo(nname) for nname in nodelist] |
710 |
instancelist = utils.NiceSort(self.cfg.GetInstanceList())
|
711 |
i_non_redundant = [] # Non redundant instances
|
712 |
node_volume = {} |
713 |
node_instance = {} |
714 |
node_info = {} |
715 |
instance_cfg = {} |
716 |
|
717 |
# FIXME: verify OS list
|
718 |
# do local checksums
|
719 |
file_names = list(self.sstore.GetFileList()) |
720 |
file_names.append(constants.SSL_CERT_FILE) |
721 |
file_names.append(constants.CLUSTER_CONF_FILE) |
722 |
local_checksums = utils.FingerprintFiles(file_names) |
723 |
|
724 |
feedback_fn("* Gathering data (%d nodes)" % len(nodelist)) |
725 |
all_volumeinfo = rpc.call_volume_list(nodelist, vg_name) |
726 |
all_instanceinfo = rpc.call_instance_list(nodelist) |
727 |
all_vglist = rpc.call_vg_list(nodelist) |
728 |
node_verify_param = { |
729 |
'filelist': file_names,
|
730 |
'nodelist': nodelist,
|
731 |
'hypervisor': None, |
732 |
'node-net-test': [(node.name, node.primary_ip, node.secondary_ip)
|
733 |
for node in nodeinfo] |
734 |
} |
735 |
all_nvinfo = rpc.call_node_verify(nodelist, node_verify_param) |
736 |
all_rversion = rpc.call_version(nodelist) |
737 |
all_ninfo = rpc.call_node_info(nodelist, self.cfg.GetVGName())
|
738 |
|
739 |
for node in nodelist: |
740 |
feedback_fn("* Verifying node %s" % node)
|
741 |
result = self._VerifyNode(node, file_names, local_checksums,
|
742 |
all_vglist[node], all_nvinfo[node], |
743 |
all_rversion[node], feedback_fn) |
744 |
bad = bad or result
|
745 |
|
746 |
# node_volume
|
747 |
volumeinfo = all_volumeinfo[node] |
748 |
|
749 |
if isinstance(volumeinfo, basestring): |
750 |
feedback_fn(" - ERROR: LVM problem on node %s: %s" %
|
751 |
(node, volumeinfo[-400:].encode('string_escape'))) |
752 |
bad = True
|
753 |
node_volume[node] = {} |
754 |
elif not isinstance(volumeinfo, dict): |
755 |
feedback_fn(" - ERROR: connection to %s failed" % (node,))
|
756 |
bad = True
|
757 |
continue
|
758 |
else:
|
759 |
node_volume[node] = volumeinfo |
760 |
|
761 |
# node_instance
|
762 |
nodeinstance = all_instanceinfo[node] |
763 |
if type(nodeinstance) != list: |
764 |
feedback_fn(" - ERROR: connection to %s failed" % (node,))
|
765 |
bad = True
|
766 |
continue
|
767 |
|
768 |
node_instance[node] = nodeinstance |
769 |
|
770 |
# node_info
|
771 |
nodeinfo = all_ninfo[node] |
772 |
if not isinstance(nodeinfo, dict): |
773 |
feedback_fn(" - ERROR: connection to %s failed" % (node,))
|
774 |
bad = True
|
775 |
continue
|
776 |
|
777 |
try:
|
778 |
node_info[node] = { |
779 |
"mfree": int(nodeinfo['memory_free']), |
780 |
"dfree": int(nodeinfo['vg_free']), |
781 |
"pinst": [],
|
782 |
"sinst": [],
|
783 |
# dictionary holding all instances this node is secondary for,
|
784 |
# grouped by their primary node. Each key is a cluster node, and each
|
785 |
# value is a list of instances which have the key as primary and the
|
786 |
# current node as secondary. this is handy to calculate N+1 memory
|
787 |
# availability if you can only failover from a primary to its
|
788 |
# secondary.
|
789 |
"sinst-by-pnode": {},
|
790 |
} |
791 |
except ValueError: |
792 |
feedback_fn(" - ERROR: invalid value returned from node %s" % (node,))
|
793 |
bad = True
|
794 |
continue
|
795 |
|
796 |
node_vol_should = {} |
797 |
|
798 |
for instance in instancelist: |
799 |
feedback_fn("* Verifying instance %s" % instance)
|
800 |
inst_config = self.cfg.GetInstanceInfo(instance)
|
801 |
result = self._VerifyInstance(instance, inst_config, node_volume,
|
802 |
node_instance, feedback_fn) |
803 |
bad = bad or result
|
804 |
|
805 |
inst_config.MapLVsByNode(node_vol_should) |
806 |
|
807 |
instance_cfg[instance] = inst_config |
808 |
|
809 |
pnode = inst_config.primary_node |
810 |
if pnode in node_info: |
811 |
node_info[pnode]['pinst'].append(instance)
|
812 |
else:
|
813 |
feedback_fn(" - ERROR: instance %s, connection to primary node"
|
814 |
" %s failed" % (instance, pnode))
|
815 |
bad = True
|
816 |
|
817 |
# If the instance is non-redundant we cannot survive losing its primary
|
818 |
# node, so we are not N+1 compliant. On the other hand we have no disk
|
819 |
# templates with more than one secondary so that situation is not well
|
820 |
# supported either.
|
821 |
# FIXME: does not support file-backed instances
|
822 |
if len(inst_config.secondary_nodes) == 0: |
823 |
i_non_redundant.append(instance) |
824 |
elif len(inst_config.secondary_nodes) > 1: |
825 |
feedback_fn(" - WARNING: multiple secondaries for instance %s"
|
826 |
% instance) |
827 |
|
828 |
for snode in inst_config.secondary_nodes: |
829 |
if snode in node_info: |
830 |
node_info[snode]['sinst'].append(instance)
|
831 |
if pnode not in node_info[snode]['sinst-by-pnode']: |
832 |
node_info[snode]['sinst-by-pnode'][pnode] = []
|
833 |
node_info[snode]['sinst-by-pnode'][pnode].append(instance)
|
834 |
else:
|
835 |
feedback_fn(" - ERROR: instance %s, connection to secondary node"
|
836 |
" %s failed" % (instance, snode))
|
837 |
|
838 |
feedback_fn("* Verifying orphan volumes")
|
839 |
result = self._VerifyOrphanVolumes(node_vol_should, node_volume,
|
840 |
feedback_fn) |
841 |
bad = bad or result
|
842 |
|
843 |
feedback_fn("* Verifying remaining instances")
|
844 |
result = self._VerifyOrphanInstances(instancelist, node_instance,
|
845 |
feedback_fn) |
846 |
bad = bad or result
|
847 |
|
848 |
if constants.VERIFY_NPLUSONE_MEM not in self.skip_set: |
849 |
feedback_fn("* Verifying N+1 Memory redundancy")
|
850 |
result = self._VerifyNPlusOneMemory(node_info, instance_cfg, feedback_fn)
|
851 |
bad = bad or result
|
852 |
|
853 |
feedback_fn("* Other Notes")
|
854 |
if i_non_redundant:
|
855 |
feedback_fn(" - NOTICE: %d non-redundant instance(s) found."
|
856 |
% len(i_non_redundant))
|
857 |
|
858 |
return int(bad) |
859 |
|
860 |
def HooksCallBack(self, phase, hooks_results, feedback_fn, lu_result): |
861 |
"""Analize the post-hooks' result, handle it, and send some
|
862 |
nicely-formatted feedback back to the user.
|
863 |
|
864 |
Args:
|
865 |
phase: the hooks phase that has just been run
|
866 |
hooks_results: the results of the multi-node hooks rpc call
|
867 |
feedback_fn: function to send feedback back to the caller
|
868 |
lu_result: previous Exec result
|
869 |
|
870 |
"""
|
871 |
# We only really run POST phase hooks, and are only interested in
|
872 |
# their results
|
873 |
if phase == constants.HOOKS_PHASE_POST:
|
874 |
# Used to change hooks' output to proper indentation
|
875 |
indent_re = re.compile('^', re.M)
|
876 |
feedback_fn("* Hooks Results")
|
877 |
if not hooks_results: |
878 |
feedback_fn(" - ERROR: general communication failure")
|
879 |
lu_result = 1
|
880 |
else:
|
881 |
for node_name in hooks_results: |
882 |
show_node_header = True
|
883 |
res = hooks_results[node_name] |
884 |
if res is False or not isinstance(res, list): |
885 |
feedback_fn(" Communication failure")
|
886 |
lu_result = 1
|
887 |
continue
|
888 |
for script, hkr, output in res: |
889 |
if hkr == constants.HKR_FAIL:
|
890 |
# The node header is only shown once, if there are
|
891 |
# failing hooks on that node
|
892 |
if show_node_header:
|
893 |
feedback_fn(" Node %s:" % node_name)
|
894 |
show_node_header = False
|
895 |
feedback_fn(" ERROR: Script %s failed, output:" % script)
|
896 |
output = indent_re.sub(' ', output)
|
897 |
feedback_fn("%s" % output)
|
898 |
lu_result = 1
|
899 |
|
900 |
return lu_result
|
901 |
|
902 |
|
903 |
class LUVerifyDisks(NoHooksLU): |
904 |
"""Verifies the cluster disks status.
|
905 |
|
906 |
"""
|
907 |
_OP_REQP = [] |
908 |
|
909 |
def CheckPrereq(self): |
910 |
"""Check prerequisites.
|
911 |
|
912 |
This has no prerequisites.
|
913 |
|
914 |
"""
|
915 |
pass
|
916 |
|
917 |
def Exec(self, feedback_fn): |
918 |
"""Verify integrity of cluster disks.
|
919 |
|
920 |
"""
|
921 |
result = res_nodes, res_nlvm, res_instances, res_missing = [], {}, [], {} |
922 |
|
923 |
vg_name = self.cfg.GetVGName()
|
924 |
nodes = utils.NiceSort(self.cfg.GetNodeList())
|
925 |
instances = [self.cfg.GetInstanceInfo(name)
|
926 |
for name in self.cfg.GetInstanceList()] |
927 |
|
928 |
nv_dict = {} |
929 |
for inst in instances: |
930 |
inst_lvs = {} |
931 |
if (inst.status != "up" or |
932 |
inst.disk_template not in constants.DTS_NET_MIRROR): |
933 |
continue
|
934 |
inst.MapLVsByNode(inst_lvs) |
935 |
# transform { iname: {node: [vol,],},} to {(node, vol): iname}
|
936 |
for node, vol_list in inst_lvs.iteritems(): |
937 |
for vol in vol_list: |
938 |
nv_dict[(node, vol)] = inst |
939 |
|
940 |
if not nv_dict: |
941 |
return result
|
942 |
|
943 |
node_lvs = rpc.call_volume_list(nodes, vg_name) |
944 |
|
945 |
to_act = set()
|
946 |
for node in nodes: |
947 |
# node_volume
|
948 |
lvs = node_lvs[node] |
949 |
|
950 |
if isinstance(lvs, basestring): |
951 |
logger.Info("error enumerating LVs on node %s: %s" % (node, lvs))
|
952 |
res_nlvm[node] = lvs |
953 |
elif not isinstance(lvs, dict): |
954 |
logger.Info("connection to node %s failed or invalid data returned" %
|
955 |
(node,)) |
956 |
res_nodes.append(node) |
957 |
continue
|
958 |
|
959 |
for lv_name, (_, lv_inactive, lv_online) in lvs.iteritems(): |
960 |
inst = nv_dict.pop((node, lv_name), None)
|
961 |
if (not lv_online and inst is not None |
962 |
and inst.name not in res_instances): |
963 |
res_instances.append(inst.name) |
964 |
|
965 |
# any leftover items in nv_dict are missing LVs, let's arrange the
|
966 |
# data better
|
967 |
for key, inst in nv_dict.iteritems(): |
968 |
if inst.name not in res_missing: |
969 |
res_missing[inst.name] = [] |
970 |
res_missing[inst.name].append(key) |
971 |
|
972 |
return result
|
973 |
|
974 |
|
975 |
class LURenameCluster(LogicalUnit): |
976 |
"""Rename the cluster.
|
977 |
|
978 |
"""
|
979 |
HPATH = "cluster-rename"
|
980 |
HTYPE = constants.HTYPE_CLUSTER |
981 |
_OP_REQP = ["name"]
|
982 |
REQ_WSSTORE = True
|
983 |
|
984 |
def BuildHooksEnv(self): |
985 |
"""Build hooks env.
|
986 |
|
987 |
"""
|
988 |
env = { |
989 |
"OP_TARGET": self.sstore.GetClusterName(), |
990 |
"NEW_NAME": self.op.name, |
991 |
} |
992 |
mn = self.sstore.GetMasterNode()
|
993 |
return env, [mn], [mn]
|
994 |
|
995 |
def CheckPrereq(self): |
996 |
"""Verify that the passed name is a valid one.
|
997 |
|
998 |
"""
|
999 |
hostname = utils.HostInfo(self.op.name)
|
1000 |
|
1001 |
new_name = hostname.name |
1002 |
self.ip = new_ip = hostname.ip
|
1003 |
old_name = self.sstore.GetClusterName()
|
1004 |
old_ip = self.sstore.GetMasterIP()
|
1005 |
if new_name == old_name and new_ip == old_ip: |
1006 |
raise errors.OpPrereqError("Neither the name nor the IP address of the" |
1007 |
" cluster has changed")
|
1008 |
if new_ip != old_ip:
|
1009 |
if utils.TcpPing(new_ip, constants.DEFAULT_NODED_PORT):
|
1010 |
raise errors.OpPrereqError("The given cluster IP address (%s) is" |
1011 |
" reachable on the network. Aborting." %
|
1012 |
new_ip) |
1013 |
|
1014 |
self.op.name = new_name
|
1015 |
|
1016 |
def Exec(self, feedback_fn): |
1017 |
"""Rename the cluster.
|
1018 |
|
1019 |
"""
|
1020 |
clustername = self.op.name
|
1021 |
ip = self.ip
|
1022 |
ss = self.sstore
|
1023 |
|
1024 |
# shutdown the master IP
|
1025 |
master = ss.GetMasterNode() |
1026 |
if not rpc.call_node_stop_master(master, False): |
1027 |
raise errors.OpExecError("Could not disable the master role") |
1028 |
|
1029 |
try:
|
1030 |
# modify the sstore
|
1031 |
ss.SetKey(ss.SS_MASTER_IP, ip) |
1032 |
ss.SetKey(ss.SS_CLUSTER_NAME, clustername) |
1033 |
|
1034 |
# Distribute updated ss config to all nodes
|
1035 |
myself = self.cfg.GetNodeInfo(master)
|
1036 |
dist_nodes = self.cfg.GetNodeList()
|
1037 |
if myself.name in dist_nodes: |
1038 |
dist_nodes.remove(myself.name) |
1039 |
|
1040 |
logger.Debug("Copying updated ssconf data to all nodes")
|
1041 |
for keyname in [ss.SS_CLUSTER_NAME, ss.SS_MASTER_IP]: |
1042 |
fname = ss.KeyToFilename(keyname) |
1043 |
result = rpc.call_upload_file(dist_nodes, fname) |
1044 |
for to_node in dist_nodes: |
1045 |
if not result[to_node]: |
1046 |
logger.Error("copy of file %s to node %s failed" %
|
1047 |
(fname, to_node)) |
1048 |
finally:
|
1049 |
if not rpc.call_node_start_master(master, False): |
1050 |
logger.Error("Could not re-enable the master role on the master,"
|
1051 |
" please restart manually.")
|
1052 |
|
1053 |
|
1054 |
def _RecursiveCheckIfLVMBased(disk): |
1055 |
"""Check if the given disk or its children are lvm-based.
|
1056 |
|
1057 |
Args:
|
1058 |
disk: ganeti.objects.Disk object
|
1059 |
|
1060 |
Returns:
|
1061 |
boolean indicating whether a LD_LV dev_type was found or not
|
1062 |
|
1063 |
"""
|
1064 |
if disk.children:
|
1065 |
for chdisk in disk.children: |
1066 |
if _RecursiveCheckIfLVMBased(chdisk):
|
1067 |
return True |
1068 |
return disk.dev_type == constants.LD_LV
|
1069 |
|
1070 |
|
1071 |
class LUSetClusterParams(LogicalUnit): |
1072 |
"""Change the parameters of the cluster.
|
1073 |
|
1074 |
"""
|
1075 |
HPATH = "cluster-modify"
|
1076 |
HTYPE = constants.HTYPE_CLUSTER |
1077 |
_OP_REQP = [] |
1078 |
|
1079 |
def BuildHooksEnv(self): |
1080 |
"""Build hooks env.
|
1081 |
|
1082 |
"""
|
1083 |
env = { |
1084 |
"OP_TARGET": self.sstore.GetClusterName(), |
1085 |
"NEW_VG_NAME": self.op.vg_name, |
1086 |
} |
1087 |
mn = self.sstore.GetMasterNode()
|
1088 |
return env, [mn], [mn]
|
1089 |
|
1090 |
def CheckPrereq(self): |
1091 |
"""Check prerequisites.
|
1092 |
|
1093 |
This checks whether the given params don't conflict and
|
1094 |
if the given volume group is valid.
|
1095 |
|
1096 |
"""
|
1097 |
if not self.op.vg_name: |
1098 |
instances = [self.cfg.GetInstanceInfo(name)
|
1099 |
for name in self.cfg.GetInstanceList()] |
1100 |
for inst in instances: |
1101 |
for disk in inst.disks: |
1102 |
if _RecursiveCheckIfLVMBased(disk):
|
1103 |
raise errors.OpPrereqError("Cannot disable lvm storage while" |
1104 |
" lvm-based instances exist")
|
1105 |
|
1106 |
# if vg_name not None, checks given volume group on all nodes
|
1107 |
if self.op.vg_name: |
1108 |
node_list = self.cfg.GetNodeList()
|
1109 |
vglist = rpc.call_vg_list(node_list) |
1110 |
for node in node_list: |
1111 |
vgstatus = utils.CheckVolumeGroupSize(vglist[node], self.op.vg_name,
|
1112 |
constants.MIN_VG_SIZE) |
1113 |
if vgstatus:
|
1114 |
raise errors.OpPrereqError("Error on node '%s': %s" % |
1115 |
(node, vgstatus)) |
1116 |
|
1117 |
def Exec(self, feedback_fn): |
1118 |
"""Change the parameters of the cluster.
|
1119 |
|
1120 |
"""
|
1121 |
if self.op.vg_name != self.cfg.GetVGName(): |
1122 |
self.cfg.SetVGName(self.op.vg_name) |
1123 |
else:
|
1124 |
feedback_fn("Cluster LVM configuration already in desired"
|
1125 |
" state, not changing")
|
1126 |
|
1127 |
|
1128 |
def _WaitForSync(cfgw, instance, proc, oneshot=False, unlock=False): |
1129 |
"""Sleep and poll for an instance's disk to sync.
|
1130 |
|
1131 |
"""
|
1132 |
if not instance.disks: |
1133 |
return True |
1134 |
|
1135 |
if not oneshot: |
1136 |
proc.LogInfo("Waiting for instance %s to sync disks." % instance.name)
|
1137 |
|
1138 |
node = instance.primary_node |
1139 |
|
1140 |
for dev in instance.disks: |
1141 |
cfgw.SetDiskID(dev, node) |
1142 |
|
1143 |
retries = 0
|
1144 |
while True: |
1145 |
max_time = 0
|
1146 |
done = True
|
1147 |
cumul_degraded = False
|
1148 |
rstats = rpc.call_blockdev_getmirrorstatus(node, instance.disks) |
1149 |
if not rstats: |
1150 |
proc.LogWarning("Can't get any data from node %s" % node)
|
1151 |
retries += 1
|
1152 |
if retries >= 10: |
1153 |
raise errors.RemoteError("Can't contact node %s for mirror data," |
1154 |
" aborting." % node)
|
1155 |
time.sleep(6)
|
1156 |
continue
|
1157 |
retries = 0
|
1158 |
for i in range(len(rstats)): |
1159 |
mstat = rstats[i] |
1160 |
if mstat is None: |
1161 |
proc.LogWarning("Can't compute data for node %s/%s" %
|
1162 |
(node, instance.disks[i].iv_name)) |
1163 |
continue
|
1164 |
# we ignore the ldisk parameter
|
1165 |
perc_done, est_time, is_degraded, _ = mstat |
1166 |
cumul_degraded = cumul_degraded or (is_degraded and perc_done is None) |
1167 |
if perc_done is not None: |
1168 |
done = False
|
1169 |
if est_time is not None: |
1170 |
rem_time = "%d estimated seconds remaining" % est_time
|
1171 |
max_time = est_time |
1172 |
else:
|
1173 |
rem_time = "no time estimate"
|
1174 |
proc.LogInfo("- device %s: %5.2f%% done, %s" %
|
1175 |
(instance.disks[i].iv_name, perc_done, rem_time)) |
1176 |
if done or oneshot: |
1177 |
break
|
1178 |
|
1179 |
time.sleep(min(60, max_time)) |
1180 |
|
1181 |
if done:
|
1182 |
proc.LogInfo("Instance %s's disks are in sync." % instance.name)
|
1183 |
return not cumul_degraded |
1184 |
|
1185 |
|
1186 |
def _CheckDiskConsistency(cfgw, dev, node, on_primary, ldisk=False): |
1187 |
"""Check that mirrors are not degraded.
|
1188 |
|
1189 |
The ldisk parameter, if True, will change the test from the
|
1190 |
is_degraded attribute (which represents overall non-ok status for
|
1191 |
the device(s)) to the ldisk (representing the local storage status).
|
1192 |
|
1193 |
"""
|
1194 |
cfgw.SetDiskID(dev, node) |
1195 |
if ldisk:
|
1196 |
idx = 6
|
1197 |
else:
|
1198 |
idx = 5
|
1199 |
|
1200 |
result = True
|
1201 |
if on_primary or dev.AssembleOnSecondary(): |
1202 |
rstats = rpc.call_blockdev_find(node, dev) |
1203 |
if not rstats: |
1204 |
logger.ToStderr("Node %s: Disk degraded, not found or node down" % node)
|
1205 |
result = False
|
1206 |
else:
|
1207 |
result = result and (not rstats[idx]) |
1208 |
if dev.children:
|
1209 |
for child in dev.children: |
1210 |
result = result and _CheckDiskConsistency(cfgw, child, node, on_primary)
|
1211 |
|
1212 |
return result
|
1213 |
|
1214 |
|
1215 |
class LUDiagnoseOS(NoHooksLU): |
1216 |
"""Logical unit for OS diagnose/query.
|
1217 |
|
1218 |
"""
|
1219 |
_OP_REQP = ["output_fields", "names"] |
1220 |
|
1221 |
def CheckPrereq(self): |
1222 |
"""Check prerequisites.
|
1223 |
|
1224 |
This always succeeds, since this is a pure query LU.
|
1225 |
|
1226 |
"""
|
1227 |
if self.op.names: |
1228 |
raise errors.OpPrereqError("Selective OS query not supported") |
1229 |
|
1230 |
self.dynamic_fields = frozenset(["name", "valid", "node_status"]) |
1231 |
_CheckOutputFields(static=[], |
1232 |
dynamic=self.dynamic_fields,
|
1233 |
selected=self.op.output_fields)
|
1234 |
|
1235 |
@staticmethod
|
1236 |
def _DiagnoseByOS(node_list, rlist): |
1237 |
"""Remaps a per-node return list into an a per-os per-node dictionary
|
1238 |
|
1239 |
Args:
|
1240 |
node_list: a list with the names of all nodes
|
1241 |
rlist: a map with node names as keys and OS objects as values
|
1242 |
|
1243 |
Returns:
|
1244 |
map: a map with osnames as keys and as value another map, with
|
1245 |
nodes as
|
1246 |
keys and list of OS objects as values
|
1247 |
e.g. {"debian-etch": {"node1": [<object>,...],
|
1248 |
"node2": [<object>,]}
|
1249 |
}
|
1250 |
|
1251 |
"""
|
1252 |
all_os = {} |
1253 |
for node_name, nr in rlist.iteritems(): |
1254 |
if not nr: |
1255 |
continue
|
1256 |
for os_obj in nr: |
1257 |
if os_obj.name not in all_os: |
1258 |
# build a list of nodes for this os containing empty lists
|
1259 |
# for each node in node_list
|
1260 |
all_os[os_obj.name] = {} |
1261 |
for nname in node_list: |
1262 |
all_os[os_obj.name][nname] = [] |
1263 |
all_os[os_obj.name][node_name].append(os_obj) |
1264 |
return all_os
|
1265 |
|
1266 |
def Exec(self, feedback_fn): |
1267 |
"""Compute the list of OSes.
|
1268 |
|
1269 |
"""
|
1270 |
node_list = self.cfg.GetNodeList()
|
1271 |
node_data = rpc.call_os_diagnose(node_list) |
1272 |
if node_data == False: |
1273 |
raise errors.OpExecError("Can't gather the list of OSes") |
1274 |
pol = self._DiagnoseByOS(node_list, node_data)
|
1275 |
output = [] |
1276 |
for os_name, os_data in pol.iteritems(): |
1277 |
row = [] |
1278 |
for field in self.op.output_fields: |
1279 |
if field == "name": |
1280 |
val = os_name |
1281 |
elif field == "valid": |
1282 |
val = utils.all([osl and osl[0] for osl in os_data.values()]) |
1283 |
elif field == "node_status": |
1284 |
val = {} |
1285 |
for node_name, nos_list in os_data.iteritems(): |
1286 |
val[node_name] = [(v.status, v.path) for v in nos_list] |
1287 |
else:
|
1288 |
raise errors.ParameterError(field)
|
1289 |
row.append(val) |
1290 |
output.append(row) |
1291 |
|
1292 |
return output
|
1293 |
|
1294 |
|
1295 |
class LURemoveNode(LogicalUnit): |
1296 |
"""Logical unit for removing a node.
|
1297 |
|
1298 |
"""
|
1299 |
HPATH = "node-remove"
|
1300 |
HTYPE = constants.HTYPE_NODE |
1301 |
_OP_REQP = ["node_name"]
|
1302 |
|
1303 |
def BuildHooksEnv(self): |
1304 |
"""Build hooks env.
|
1305 |
|
1306 |
This doesn't run on the target node in the pre phase as a failed
|
1307 |
node would then be impossible to remove.
|
1308 |
|
1309 |
"""
|
1310 |
env = { |
1311 |
"OP_TARGET": self.op.node_name, |
1312 |
"NODE_NAME": self.op.node_name, |
1313 |
} |
1314 |
all_nodes = self.cfg.GetNodeList()
|
1315 |
all_nodes.remove(self.op.node_name)
|
1316 |
return env, all_nodes, all_nodes
|
1317 |
|
1318 |
def CheckPrereq(self): |
1319 |
"""Check prerequisites.
|
1320 |
|
1321 |
This checks:
|
1322 |
- the node exists in the configuration
|
1323 |
- it does not have primary or secondary instances
|
1324 |
- it's not the master
|
1325 |
|
1326 |
Any errors are signalled by raising errors.OpPrereqError.
|
1327 |
|
1328 |
"""
|
1329 |
node = self.cfg.GetNodeInfo(self.cfg.ExpandNodeName(self.op.node_name)) |
1330 |
if node is None: |
1331 |
raise errors.OpPrereqError, ("Node '%s' is unknown." % self.op.node_name) |
1332 |
|
1333 |
instance_list = self.cfg.GetInstanceList()
|
1334 |
|
1335 |
masternode = self.sstore.GetMasterNode()
|
1336 |
if node.name == masternode:
|
1337 |
raise errors.OpPrereqError("Node is the master node," |
1338 |
" you need to failover first.")
|
1339 |
|
1340 |
for instance_name in instance_list: |
1341 |
instance = self.cfg.GetInstanceInfo(instance_name)
|
1342 |
if node.name == instance.primary_node:
|
1343 |
raise errors.OpPrereqError("Instance %s still running on the node," |
1344 |
" please remove first." % instance_name)
|
1345 |
if node.name in instance.secondary_nodes: |
1346 |
raise errors.OpPrereqError("Instance %s has node as a secondary," |
1347 |
" please remove first." % instance_name)
|
1348 |
self.op.node_name = node.name
|
1349 |
self.node = node
|
1350 |
|
1351 |
def Exec(self, feedback_fn): |
1352 |
"""Removes the node from the cluster.
|
1353 |
|
1354 |
"""
|
1355 |
node = self.node
|
1356 |
logger.Info("stopping the node daemon and removing configs from node %s" %
|
1357 |
node.name) |
1358 |
|
1359 |
self.context.RemoveNode(node.name)
|
1360 |
|
1361 |
rpc.call_node_leave_cluster(node.name) |
1362 |
|
1363 |
|
1364 |
class LUQueryNodes(NoHooksLU): |
1365 |
"""Logical unit for querying nodes.
|
1366 |
|
1367 |
"""
|
1368 |
_OP_REQP = ["output_fields", "names"] |
1369 |
|
1370 |
def CheckPrereq(self): |
1371 |
"""Check prerequisites.
|
1372 |
|
1373 |
This checks that the fields required are valid output fields.
|
1374 |
|
1375 |
"""
|
1376 |
self.dynamic_fields = frozenset([ |
1377 |
"dtotal", "dfree", |
1378 |
"mtotal", "mnode", "mfree", |
1379 |
"bootid",
|
1380 |
"ctotal",
|
1381 |
]) |
1382 |
|
1383 |
_CheckOutputFields(static=["name", "pinst_cnt", "sinst_cnt", |
1384 |
"pinst_list", "sinst_list", |
1385 |
"pip", "sip", "tags"], |
1386 |
dynamic=self.dynamic_fields,
|
1387 |
selected=self.op.output_fields)
|
1388 |
|
1389 |
self.wanted = _GetWantedNodes(self, self.op.names) |
1390 |
|
1391 |
def Exec(self, feedback_fn): |
1392 |
"""Computes the list of nodes and their attributes.
|
1393 |
|
1394 |
"""
|
1395 |
nodenames = self.wanted
|
1396 |
nodelist = [self.cfg.GetNodeInfo(name) for name in nodenames] |
1397 |
|
1398 |
# begin data gathering
|
1399 |
|
1400 |
if self.dynamic_fields.intersection(self.op.output_fields): |
1401 |
live_data = {} |
1402 |
node_data = rpc.call_node_info(nodenames, self.cfg.GetVGName())
|
1403 |
for name in nodenames: |
1404 |
nodeinfo = node_data.get(name, None)
|
1405 |
if nodeinfo:
|
1406 |
live_data[name] = { |
1407 |
"mtotal": utils.TryConvert(int, nodeinfo['memory_total']), |
1408 |
"mnode": utils.TryConvert(int, nodeinfo['memory_dom0']), |
1409 |
"mfree": utils.TryConvert(int, nodeinfo['memory_free']), |
1410 |
"dtotal": utils.TryConvert(int, nodeinfo['vg_size']), |
1411 |
"dfree": utils.TryConvert(int, nodeinfo['vg_free']), |
1412 |
"ctotal": utils.TryConvert(int, nodeinfo['cpu_total']), |
1413 |
"bootid": nodeinfo['bootid'], |
1414 |
} |
1415 |
else:
|
1416 |
live_data[name] = {} |
1417 |
else:
|
1418 |
live_data = dict.fromkeys(nodenames, {})
|
1419 |
|
1420 |
node_to_primary = dict([(name, set()) for name in nodenames]) |
1421 |
node_to_secondary = dict([(name, set()) for name in nodenames]) |
1422 |
|
1423 |
inst_fields = frozenset(("pinst_cnt", "pinst_list", |
1424 |
"sinst_cnt", "sinst_list")) |
1425 |
if inst_fields & frozenset(self.op.output_fields): |
1426 |
instancelist = self.cfg.GetInstanceList()
|
1427 |
|
1428 |
for instance_name in instancelist: |
1429 |
inst = self.cfg.GetInstanceInfo(instance_name)
|
1430 |
if inst.primary_node in node_to_primary: |
1431 |
node_to_primary[inst.primary_node].add(inst.name) |
1432 |
for secnode in inst.secondary_nodes: |
1433 |
if secnode in node_to_secondary: |
1434 |
node_to_secondary[secnode].add(inst.name) |
1435 |
|
1436 |
# end data gathering
|
1437 |
|
1438 |
output = [] |
1439 |
for node in nodelist: |
1440 |
node_output = [] |
1441 |
for field in self.op.output_fields: |
1442 |
if field == "name": |
1443 |
val = node.name |
1444 |
elif field == "pinst_list": |
1445 |
val = list(node_to_primary[node.name])
|
1446 |
elif field == "sinst_list": |
1447 |
val = list(node_to_secondary[node.name])
|
1448 |
elif field == "pinst_cnt": |
1449 |
val = len(node_to_primary[node.name])
|
1450 |
elif field == "sinst_cnt": |
1451 |
val = len(node_to_secondary[node.name])
|
1452 |
elif field == "pip": |
1453 |
val = node.primary_ip |
1454 |
elif field == "sip": |
1455 |
val = node.secondary_ip |
1456 |
elif field == "tags": |
1457 |
val = list(node.GetTags())
|
1458 |
elif field in self.dynamic_fields: |
1459 |
val = live_data[node.name].get(field, None)
|
1460 |
else:
|
1461 |
raise errors.ParameterError(field)
|
1462 |
node_output.append(val) |
1463 |
output.append(node_output) |
1464 |
|
1465 |
return output
|
1466 |
|
1467 |
|
1468 |
class LUQueryNodeVolumes(NoHooksLU): |
1469 |
"""Logical unit for getting volumes on node(s).
|
1470 |
|
1471 |
"""
|
1472 |
_OP_REQP = ["nodes", "output_fields"] |
1473 |
|
1474 |
def CheckPrereq(self): |
1475 |
"""Check prerequisites.
|
1476 |
|
1477 |
This checks that the fields required are valid output fields.
|
1478 |
|
1479 |
"""
|
1480 |
self.nodes = _GetWantedNodes(self, self.op.nodes) |
1481 |
|
1482 |
_CheckOutputFields(static=["node"],
|
1483 |
dynamic=["phys", "vg", "name", "size", "instance"], |
1484 |
selected=self.op.output_fields)
|
1485 |
|
1486 |
|
1487 |
def Exec(self, feedback_fn): |
1488 |
"""Computes the list of nodes and their attributes.
|
1489 |
|
1490 |
"""
|
1491 |
nodenames = self.nodes
|
1492 |
volumes = rpc.call_node_volumes(nodenames) |
1493 |
|
1494 |
ilist = [self.cfg.GetInstanceInfo(iname) for iname |
1495 |
in self.cfg.GetInstanceList()] |
1496 |
|
1497 |
lv_by_node = dict([(inst, inst.MapLVsByNode()) for inst in ilist]) |
1498 |
|
1499 |
output = [] |
1500 |
for node in nodenames: |
1501 |
if node not in volumes or not volumes[node]: |
1502 |
continue
|
1503 |
|
1504 |
node_vols = volumes[node][:] |
1505 |
node_vols.sort(key=lambda vol: vol['dev']) |
1506 |
|
1507 |
for vol in node_vols: |
1508 |
node_output = [] |
1509 |
for field in self.op.output_fields: |
1510 |
if field == "node": |
1511 |
val = node |
1512 |
elif field == "phys": |
1513 |
val = vol['dev']
|
1514 |
elif field == "vg": |
1515 |
val = vol['vg']
|
1516 |
elif field == "name": |
1517 |
val = vol['name']
|
1518 |
elif field == "size": |
1519 |
val = int(float(vol['size'])) |
1520 |
elif field == "instance": |
1521 |
for inst in ilist: |
1522 |
if node not in lv_by_node[inst]: |
1523 |
continue
|
1524 |
if vol['name'] in lv_by_node[inst][node]: |
1525 |
val = inst.name |
1526 |
break
|
1527 |
else:
|
1528 |
val = '-'
|
1529 |
else:
|
1530 |
raise errors.ParameterError(field)
|
1531 |
node_output.append(str(val))
|
1532 |
|
1533 |
output.append(node_output) |
1534 |
|
1535 |
return output
|
1536 |
|
1537 |
|
1538 |
class LUAddNode(LogicalUnit): |
1539 |
"""Logical unit for adding node to the cluster.
|
1540 |
|
1541 |
"""
|
1542 |
HPATH = "node-add"
|
1543 |
HTYPE = constants.HTYPE_NODE |
1544 |
_OP_REQP = ["node_name"]
|
1545 |
|
1546 |
def BuildHooksEnv(self): |
1547 |
"""Build hooks env.
|
1548 |
|
1549 |
This will run on all nodes before, and on all nodes + the new node after.
|
1550 |
|
1551 |
"""
|
1552 |
env = { |
1553 |
"OP_TARGET": self.op.node_name, |
1554 |
"NODE_NAME": self.op.node_name, |
1555 |
"NODE_PIP": self.op.primary_ip, |
1556 |
"NODE_SIP": self.op.secondary_ip, |
1557 |
} |
1558 |
nodes_0 = self.cfg.GetNodeList()
|
1559 |
nodes_1 = nodes_0 + [self.op.node_name, ]
|
1560 |
return env, nodes_0, nodes_1
|
1561 |
|
1562 |
def CheckPrereq(self): |
1563 |
"""Check prerequisites.
|
1564 |
|
1565 |
This checks:
|
1566 |
- the new node is not already in the config
|
1567 |
- it is resolvable
|
1568 |
- its parameters (single/dual homed) matches the cluster
|
1569 |
|
1570 |
Any errors are signalled by raising errors.OpPrereqError.
|
1571 |
|
1572 |
"""
|
1573 |
node_name = self.op.node_name
|
1574 |
cfg = self.cfg
|
1575 |
|
1576 |
dns_data = utils.HostInfo(node_name) |
1577 |
|
1578 |
node = dns_data.name |
1579 |
primary_ip = self.op.primary_ip = dns_data.ip
|
1580 |
secondary_ip = getattr(self.op, "secondary_ip", None) |
1581 |
if secondary_ip is None: |
1582 |
secondary_ip = primary_ip |
1583 |
if not utils.IsValidIP(secondary_ip): |
1584 |
raise errors.OpPrereqError("Invalid secondary IP given") |
1585 |
self.op.secondary_ip = secondary_ip
|
1586 |
|
1587 |
node_list = cfg.GetNodeList() |
1588 |
if not self.op.readd and node in node_list: |
1589 |
raise errors.OpPrereqError("Node %s is already in the configuration" % |
1590 |
node) |
1591 |
elif self.op.readd and node not in node_list: |
1592 |
raise errors.OpPrereqError("Node %s is not in the configuration" % node) |
1593 |
|
1594 |
for existing_node_name in node_list: |
1595 |
existing_node = cfg.GetNodeInfo(existing_node_name) |
1596 |
|
1597 |
if self.op.readd and node == existing_node_name: |
1598 |
if (existing_node.primary_ip != primary_ip or |
1599 |
existing_node.secondary_ip != secondary_ip): |
1600 |
raise errors.OpPrereqError("Readded node doesn't have the same IP" |
1601 |
" address configuration as before")
|
1602 |
continue
|
1603 |
|
1604 |
if (existing_node.primary_ip == primary_ip or |
1605 |
existing_node.secondary_ip == primary_ip or
|
1606 |
existing_node.primary_ip == secondary_ip or
|
1607 |
existing_node.secondary_ip == secondary_ip): |
1608 |
raise errors.OpPrereqError("New node ip address(es) conflict with" |
1609 |
" existing node %s" % existing_node.name)
|
1610 |
|
1611 |
# check that the type of the node (single versus dual homed) is the
|
1612 |
# same as for the master
|
1613 |
myself = cfg.GetNodeInfo(self.sstore.GetMasterNode())
|
1614 |
master_singlehomed = myself.secondary_ip == myself.primary_ip |
1615 |
newbie_singlehomed = secondary_ip == primary_ip |
1616 |
if master_singlehomed != newbie_singlehomed:
|
1617 |
if master_singlehomed:
|
1618 |
raise errors.OpPrereqError("The master has no private ip but the" |
1619 |
" new node has one")
|
1620 |
else:
|
1621 |
raise errors.OpPrereqError("The master has a private ip but the" |
1622 |
" new node doesn't have one")
|
1623 |
|
1624 |
# checks reachablity
|
1625 |
if not utils.TcpPing(primary_ip, constants.DEFAULT_NODED_PORT): |
1626 |
raise errors.OpPrereqError("Node not reachable by ping") |
1627 |
|
1628 |
if not newbie_singlehomed: |
1629 |
# check reachability from my secondary ip to newbie's secondary ip
|
1630 |
if not utils.TcpPing(secondary_ip, constants.DEFAULT_NODED_PORT, |
1631 |
source=myself.secondary_ip): |
1632 |
raise errors.OpPrereqError("Node secondary ip not reachable by TCP" |
1633 |
" based ping to noded port")
|
1634 |
|
1635 |
self.new_node = objects.Node(name=node,
|
1636 |
primary_ip=primary_ip, |
1637 |
secondary_ip=secondary_ip) |
1638 |
|
1639 |
def Exec(self, feedback_fn): |
1640 |
"""Adds the new node to the cluster.
|
1641 |
|
1642 |
"""
|
1643 |
new_node = self.new_node
|
1644 |
node = new_node.name |
1645 |
|
1646 |
# check connectivity
|
1647 |
result = rpc.call_version([node])[node] |
1648 |
if result:
|
1649 |
if constants.PROTOCOL_VERSION == result:
|
1650 |
logger.Info("communication to node %s fine, sw version %s match" %
|
1651 |
(node, result)) |
1652 |
else:
|
1653 |
raise errors.OpExecError("Version mismatch master version %s," |
1654 |
" node version %s" %
|
1655 |
(constants.PROTOCOL_VERSION, result)) |
1656 |
else:
|
1657 |
raise errors.OpExecError("Cannot get version from the new node") |
1658 |
|
1659 |
# setup ssh on node
|
1660 |
logger.Info("copy ssh key to node %s" % node)
|
1661 |
priv_key, pub_key, _ = ssh.GetUserFiles(constants.GANETI_RUNAS) |
1662 |
keyarray = [] |
1663 |
keyfiles = [constants.SSH_HOST_DSA_PRIV, constants.SSH_HOST_DSA_PUB, |
1664 |
constants.SSH_HOST_RSA_PRIV, constants.SSH_HOST_RSA_PUB, |
1665 |
priv_key, pub_key] |
1666 |
|
1667 |
for i in keyfiles: |
1668 |
f = open(i, 'r') |
1669 |
try:
|
1670 |
keyarray.append(f.read()) |
1671 |
finally:
|
1672 |
f.close() |
1673 |
|
1674 |
result = rpc.call_node_add(node, keyarray[0], keyarray[1], keyarray[2], |
1675 |
keyarray[3], keyarray[4], keyarray[5]) |
1676 |
|
1677 |
if not result: |
1678 |
raise errors.OpExecError("Cannot transfer ssh keys to the new node") |
1679 |
|
1680 |
# Add node to our /etc/hosts, and add key to known_hosts
|
1681 |
utils.AddHostToEtcHosts(new_node.name) |
1682 |
|
1683 |
if new_node.secondary_ip != new_node.primary_ip:
|
1684 |
if not rpc.call_node_tcp_ping(new_node.name, |
1685 |
constants.LOCALHOST_IP_ADDRESS, |
1686 |
new_node.secondary_ip, |
1687 |
constants.DEFAULT_NODED_PORT, |
1688 |
10, False): |
1689 |
raise errors.OpExecError("Node claims it doesn't have the secondary ip" |
1690 |
" you gave (%s). Please fix and re-run this"
|
1691 |
" command." % new_node.secondary_ip)
|
1692 |
|
1693 |
node_verify_list = [self.sstore.GetMasterNode()]
|
1694 |
node_verify_param = { |
1695 |
'nodelist': [node],
|
1696 |
# TODO: do a node-net-test as well?
|
1697 |
} |
1698 |
|
1699 |
result = rpc.call_node_verify(node_verify_list, node_verify_param) |
1700 |
for verifier in node_verify_list: |
1701 |
if not result[verifier]: |
1702 |
raise errors.OpExecError("Cannot communicate with %s's node daemon" |
1703 |
" for remote verification" % verifier)
|
1704 |
if result[verifier]['nodelist']: |
1705 |
for failed in result[verifier]['nodelist']: |
1706 |
feedback_fn("ssh/hostname verification failed %s -> %s" %
|
1707 |
(verifier, result[verifier]['nodelist'][failed]))
|
1708 |
raise errors.OpExecError("ssh/hostname verification failed.") |
1709 |
|
1710 |
# Distribute updated /etc/hosts and known_hosts to all nodes,
|
1711 |
# including the node just added
|
1712 |
myself = self.cfg.GetNodeInfo(self.sstore.GetMasterNode()) |
1713 |
dist_nodes = self.cfg.GetNodeList()
|
1714 |
if not self.op.readd: |
1715 |
dist_nodes.append(node) |
1716 |
if myself.name in dist_nodes: |
1717 |
dist_nodes.remove(myself.name) |
1718 |
|
1719 |
logger.Debug("Copying hosts and known_hosts to all nodes")
|
1720 |
for fname in (constants.ETC_HOSTS, constants.SSH_KNOWN_HOSTS_FILE): |
1721 |
result = rpc.call_upload_file(dist_nodes, fname) |
1722 |
for to_node in dist_nodes: |
1723 |
if not result[to_node]: |
1724 |
logger.Error("copy of file %s to node %s failed" %
|
1725 |
(fname, to_node)) |
1726 |
|
1727 |
to_copy = self.sstore.GetFileList()
|
1728 |
if self.sstore.GetHypervisorType() == constants.HT_XEN_HVM31: |
1729 |
to_copy.append(constants.VNC_PASSWORD_FILE) |
1730 |
for fname in to_copy: |
1731 |
result = rpc.call_upload_file([node], fname) |
1732 |
if not result[node]: |
1733 |
logger.Error("could not copy file %s to node %s" % (fname, node))
|
1734 |
|
1735 |
if self.op.readd: |
1736 |
self.context.ReaddNode(new_node)
|
1737 |
else:
|
1738 |
self.context.AddNode(new_node)
|
1739 |
|
1740 |
|
1741 |
class LUQueryClusterInfo(NoHooksLU): |
1742 |
"""Query cluster configuration.
|
1743 |
|
1744 |
"""
|
1745 |
_OP_REQP = [] |
1746 |
REQ_MASTER = False
|
1747 |
REQ_BGL = False
|
1748 |
|
1749 |
def ExpandNames(self): |
1750 |
self.needed_locks = {}
|
1751 |
|
1752 |
def CheckPrereq(self): |
1753 |
"""No prerequsites needed for this LU.
|
1754 |
|
1755 |
"""
|
1756 |
pass
|
1757 |
|
1758 |
def Exec(self, feedback_fn): |
1759 |
"""Return cluster config.
|
1760 |
|
1761 |
"""
|
1762 |
result = { |
1763 |
"name": self.sstore.GetClusterName(), |
1764 |
"software_version": constants.RELEASE_VERSION,
|
1765 |
"protocol_version": constants.PROTOCOL_VERSION,
|
1766 |
"config_version": constants.CONFIG_VERSION,
|
1767 |
"os_api_version": constants.OS_API_VERSION,
|
1768 |
"export_version": constants.EXPORT_VERSION,
|
1769 |
"master": self.sstore.GetMasterNode(), |
1770 |
"architecture": (platform.architecture()[0], platform.machine()), |
1771 |
"hypervisor_type": self.sstore.GetHypervisorType(), |
1772 |
} |
1773 |
|
1774 |
return result
|
1775 |
|
1776 |
|
1777 |
class LUDumpClusterConfig(NoHooksLU): |
1778 |
"""Return a text-representation of the cluster-config.
|
1779 |
|
1780 |
"""
|
1781 |
_OP_REQP = [] |
1782 |
REQ_BGL = False
|
1783 |
|
1784 |
def ExpandNames(self): |
1785 |
self.needed_locks = {}
|
1786 |
|
1787 |
def CheckPrereq(self): |
1788 |
"""No prerequisites.
|
1789 |
|
1790 |
"""
|
1791 |
pass
|
1792 |
|
1793 |
def Exec(self, feedback_fn): |
1794 |
"""Dump a representation of the cluster config to the standard output.
|
1795 |
|
1796 |
"""
|
1797 |
return self.cfg.DumpConfig() |
1798 |
|
1799 |
|
1800 |
class LUActivateInstanceDisks(NoHooksLU): |
1801 |
"""Bring up an instance's disks.
|
1802 |
|
1803 |
"""
|
1804 |
_OP_REQP = ["instance_name"]
|
1805 |
|
1806 |
def CheckPrereq(self): |
1807 |
"""Check prerequisites.
|
1808 |
|
1809 |
This checks that the instance is in the cluster.
|
1810 |
|
1811 |
"""
|
1812 |
instance = self.cfg.GetInstanceInfo(
|
1813 |
self.cfg.ExpandInstanceName(self.op.instance_name)) |
1814 |
if instance is None: |
1815 |
raise errors.OpPrereqError("Instance '%s' not known" % |
1816 |
self.op.instance_name)
|
1817 |
self.instance = instance
|
1818 |
|
1819 |
|
1820 |
def Exec(self, feedback_fn): |
1821 |
"""Activate the disks.
|
1822 |
|
1823 |
"""
|
1824 |
disks_ok, disks_info = _AssembleInstanceDisks(self.instance, self.cfg) |
1825 |
if not disks_ok: |
1826 |
raise errors.OpExecError("Cannot activate block devices") |
1827 |
|
1828 |
return disks_info
|
1829 |
|
1830 |
|
1831 |
def _AssembleInstanceDisks(instance, cfg, ignore_secondaries=False): |
1832 |
"""Prepare the block devices for an instance.
|
1833 |
|
1834 |
This sets up the block devices on all nodes.
|
1835 |
|
1836 |
Args:
|
1837 |
instance: a ganeti.objects.Instance object
|
1838 |
ignore_secondaries: if true, errors on secondary nodes won't result
|
1839 |
in an error return from the function
|
1840 |
|
1841 |
Returns:
|
1842 |
false if the operation failed
|
1843 |
list of (host, instance_visible_name, node_visible_name) if the operation
|
1844 |
suceeded with the mapping from node devices to instance devices
|
1845 |
"""
|
1846 |
device_info = [] |
1847 |
disks_ok = True
|
1848 |
iname = instance.name |
1849 |
# With the two passes mechanism we try to reduce the window of
|
1850 |
# opportunity for the race condition of switching DRBD to primary
|
1851 |
# before handshaking occured, but we do not eliminate it
|
1852 |
|
1853 |
# The proper fix would be to wait (with some limits) until the
|
1854 |
# connection has been made and drbd transitions from WFConnection
|
1855 |
# into any other network-connected state (Connected, SyncTarget,
|
1856 |
# SyncSource, etc.)
|
1857 |
|
1858 |
# 1st pass, assemble on all nodes in secondary mode
|
1859 |
for inst_disk in instance.disks: |
1860 |
for node, node_disk in inst_disk.ComputeNodeTree(instance.primary_node): |
1861 |
cfg.SetDiskID(node_disk, node) |
1862 |
result = rpc.call_blockdev_assemble(node, node_disk, iname, False)
|
1863 |
if not result: |
1864 |
logger.Error("could not prepare block device %s on node %s"
|
1865 |
" (is_primary=False, pass=1)" % (inst_disk.iv_name, node))
|
1866 |
if not ignore_secondaries: |
1867 |
disks_ok = False
|
1868 |
|
1869 |
# FIXME: race condition on drbd migration to primary
|
1870 |
|
1871 |
# 2nd pass, do only the primary node
|
1872 |
for inst_disk in instance.disks: |
1873 |
for node, node_disk in inst_disk.ComputeNodeTree(instance.primary_node): |
1874 |
if node != instance.primary_node:
|
1875 |
continue
|
1876 |
cfg.SetDiskID(node_disk, node) |
1877 |
result = rpc.call_blockdev_assemble(node, node_disk, iname, True)
|
1878 |
if not result: |
1879 |
logger.Error("could not prepare block device %s on node %s"
|
1880 |
" (is_primary=True, pass=2)" % (inst_disk.iv_name, node))
|
1881 |
disks_ok = False
|
1882 |
device_info.append((instance.primary_node, inst_disk.iv_name, result)) |
1883 |
|
1884 |
# leave the disks configured for the primary node
|
1885 |
# this is a workaround that would be fixed better by
|
1886 |
# improving the logical/physical id handling
|
1887 |
for disk in instance.disks: |
1888 |
cfg.SetDiskID(disk, instance.primary_node) |
1889 |
|
1890 |
return disks_ok, device_info
|
1891 |
|
1892 |
|
1893 |
def _StartInstanceDisks(cfg, instance, force): |
1894 |
"""Start the disks of an instance.
|
1895 |
|
1896 |
"""
|
1897 |
disks_ok, dummy = _AssembleInstanceDisks(instance, cfg, |
1898 |
ignore_secondaries=force) |
1899 |
if not disks_ok: |
1900 |
_ShutdownInstanceDisks(instance, cfg) |
1901 |
if force is not None and not force: |
1902 |
logger.Error("If the message above refers to a secondary node,"
|
1903 |
" you can retry the operation using '--force'.")
|
1904 |
raise errors.OpExecError("Disk consistency error") |
1905 |
|
1906 |
|
1907 |
class LUDeactivateInstanceDisks(NoHooksLU): |
1908 |
"""Shutdown an instance's disks.
|
1909 |
|
1910 |
"""
|
1911 |
_OP_REQP = ["instance_name"]
|
1912 |
|
1913 |
def CheckPrereq(self): |
1914 |
"""Check prerequisites.
|
1915 |
|
1916 |
This checks that the instance is in the cluster.
|
1917 |
|
1918 |
"""
|
1919 |
instance = self.cfg.GetInstanceInfo(
|
1920 |
self.cfg.ExpandInstanceName(self.op.instance_name)) |
1921 |
if instance is None: |
1922 |
raise errors.OpPrereqError("Instance '%s' not known" % |
1923 |
self.op.instance_name)
|
1924 |
self.instance = instance
|
1925 |
|
1926 |
def Exec(self, feedback_fn): |
1927 |
"""Deactivate the disks
|
1928 |
|
1929 |
"""
|
1930 |
instance = self.instance
|
1931 |
ins_l = rpc.call_instance_list([instance.primary_node]) |
1932 |
ins_l = ins_l[instance.primary_node] |
1933 |
if not type(ins_l) is list: |
1934 |
raise errors.OpExecError("Can't contact node '%s'" % |
1935 |
instance.primary_node) |
1936 |
|
1937 |
if self.instance.name in ins_l: |
1938 |
raise errors.OpExecError("Instance is running, can't shutdown" |
1939 |
" block devices.")
|
1940 |
|
1941 |
_ShutdownInstanceDisks(instance, self.cfg)
|
1942 |
|
1943 |
|
1944 |
def _ShutdownInstanceDisks(instance, cfg, ignore_primary=False): |
1945 |
"""Shutdown block devices of an instance.
|
1946 |
|
1947 |
This does the shutdown on all nodes of the instance.
|
1948 |
|
1949 |
If the ignore_primary is false, errors on the primary node are
|
1950 |
ignored.
|
1951 |
|
1952 |
"""
|
1953 |
result = True
|
1954 |
for disk in instance.disks: |
1955 |
for node, top_disk in disk.ComputeNodeTree(instance.primary_node): |
1956 |
cfg.SetDiskID(top_disk, node) |
1957 |
if not rpc.call_blockdev_shutdown(node, top_disk): |
1958 |
logger.Error("could not shutdown block device %s on node %s" %
|
1959 |
(disk.iv_name, node)) |
1960 |
if not ignore_primary or node != instance.primary_node: |
1961 |
result = False
|
1962 |
return result
|
1963 |
|
1964 |
|
1965 |
def _CheckNodeFreeMemory(cfg, node, reason, requested): |
1966 |
"""Checks if a node has enough free memory.
|
1967 |
|
1968 |
This function check if a given node has the needed amount of free
|
1969 |
memory. In case the node has less memory or we cannot get the
|
1970 |
information from the node, this function raise an OpPrereqError
|
1971 |
exception.
|
1972 |
|
1973 |
Args:
|
1974 |
- cfg: a ConfigWriter instance
|
1975 |
- node: the node name
|
1976 |
- reason: string to use in the error message
|
1977 |
- requested: the amount of memory in MiB
|
1978 |
|
1979 |
"""
|
1980 |
nodeinfo = rpc.call_node_info([node], cfg.GetVGName()) |
1981 |
if not nodeinfo or not isinstance(nodeinfo, dict): |
1982 |
raise errors.OpPrereqError("Could not contact node %s for resource" |
1983 |
" information" % (node,))
|
1984 |
|
1985 |
free_mem = nodeinfo[node].get('memory_free')
|
1986 |
if not isinstance(free_mem, int): |
1987 |
raise errors.OpPrereqError("Can't compute free memory on node %s, result" |
1988 |
" was '%s'" % (node, free_mem))
|
1989 |
if requested > free_mem:
|
1990 |
raise errors.OpPrereqError("Not enough memory on node %s for %s:" |
1991 |
" needed %s MiB, available %s MiB" %
|
1992 |
(node, reason, requested, free_mem)) |
1993 |
|
1994 |
|
1995 |
class LUStartupInstance(LogicalUnit): |
1996 |
"""Starts an instance.
|
1997 |
|
1998 |
"""
|
1999 |
HPATH = "instance-start"
|
2000 |
HTYPE = constants.HTYPE_INSTANCE |
2001 |
_OP_REQP = ["instance_name", "force"] |
2002 |
REQ_BGL = False
|
2003 |
|
2004 |
def ExpandNames(self): |
2005 |
self._ExpandAndLockInstance()
|
2006 |
self.needed_locks[locking.LEVEL_NODE] = []
|
2007 |
self.recalculate_locks[locking.LEVEL_NODE] = 'replace' |
2008 |
|
2009 |
def DeclareLocks(self, level): |
2010 |
if level == locking.LEVEL_NODE:
|
2011 |
self._LockInstancesNodes()
|
2012 |
|
2013 |
def BuildHooksEnv(self): |
2014 |
"""Build hooks env.
|
2015 |
|
2016 |
This runs on master, primary and secondary nodes of the instance.
|
2017 |
|
2018 |
"""
|
2019 |
env = { |
2020 |
"FORCE": self.op.force, |
2021 |
} |
2022 |
env.update(_BuildInstanceHookEnvByObject(self.instance))
|
2023 |
nl = ([self.sstore.GetMasterNode(), self.instance.primary_node] + |
2024 |
list(self.instance.secondary_nodes)) |
2025 |
return env, nl, nl
|
2026 |
|
2027 |
def CheckPrereq(self): |
2028 |
"""Check prerequisites.
|
2029 |
|
2030 |
This checks that the instance is in the cluster.
|
2031 |
|
2032 |
"""
|
2033 |
self.instance = instance = self.cfg.GetInstanceInfo(self.op.instance_name) |
2034 |
assert self.instance is not None, \ |
2035 |
"Cannot retrieve locked instance %s" % self.op.instance_name |
2036 |
|
2037 |
# check bridges existance
|
2038 |
_CheckInstanceBridgesExist(instance) |
2039 |
|
2040 |
_CheckNodeFreeMemory(self.cfg, instance.primary_node,
|
2041 |
"starting instance %s" % instance.name,
|
2042 |
instance.memory) |
2043 |
|
2044 |
def Exec(self, feedback_fn): |
2045 |
"""Start the instance.
|
2046 |
|
2047 |
"""
|
2048 |
instance = self.instance
|
2049 |
force = self.op.force
|
2050 |
extra_args = getattr(self.op, "extra_args", "") |
2051 |
|
2052 |
self.cfg.MarkInstanceUp(instance.name)
|
2053 |
|
2054 |
node_current = instance.primary_node |
2055 |
|
2056 |
_StartInstanceDisks(self.cfg, instance, force)
|
2057 |
|
2058 |
if not rpc.call_instance_start(node_current, instance, extra_args): |
2059 |
_ShutdownInstanceDisks(instance, self.cfg)
|
2060 |
raise errors.OpExecError("Could not start instance") |
2061 |
|
2062 |
|
2063 |
class LURebootInstance(LogicalUnit): |
2064 |
"""Reboot an instance.
|
2065 |
|
2066 |
"""
|
2067 |
HPATH = "instance-reboot"
|
2068 |
HTYPE = constants.HTYPE_INSTANCE |
2069 |
_OP_REQP = ["instance_name", "ignore_secondaries", "reboot_type"] |
2070 |
REQ_BGL = False
|
2071 |
|
2072 |
def ExpandNames(self): |
2073 |
self._ExpandAndLockInstance()
|
2074 |
self.needed_locks[locking.LEVEL_NODE] = []
|
2075 |
self.recalculate_locks[locking.LEVEL_NODE] = 'replace' |
2076 |
|
2077 |
def DeclareLocks(self, level): |
2078 |
if level == locking.LEVEL_NODE:
|
2079 |
self._LockInstancesNodes()
|
2080 |
|
2081 |
def BuildHooksEnv(self): |
2082 |
"""Build hooks env.
|
2083 |
|
2084 |
This runs on master, primary and secondary nodes of the instance.
|
2085 |
|
2086 |
"""
|
2087 |
env = { |
2088 |
"IGNORE_SECONDARIES": self.op.ignore_secondaries, |
2089 |
} |
2090 |
env.update(_BuildInstanceHookEnvByObject(self.instance))
|
2091 |
nl = ([self.sstore.GetMasterNode(), self.instance.primary_node] + |
2092 |
list(self.instance.secondary_nodes)) |
2093 |
return env, nl, nl
|
2094 |
|
2095 |
def CheckPrereq(self): |
2096 |
"""Check prerequisites.
|
2097 |
|
2098 |
This checks that the instance is in the cluster.
|
2099 |
|
2100 |
"""
|
2101 |
self.instance = instance = self.cfg.GetInstanceInfo(self.op.instance_name) |
2102 |
assert self.instance is not None, \ |
2103 |
"Cannot retrieve locked instance %s" % self.op.instance_name |
2104 |
|
2105 |
# check bridges existance
|
2106 |
_CheckInstanceBridgesExist(instance) |
2107 |
|
2108 |
def Exec(self, feedback_fn): |
2109 |
"""Reboot the instance.
|
2110 |
|
2111 |
"""
|
2112 |
instance = self.instance
|
2113 |
ignore_secondaries = self.op.ignore_secondaries
|
2114 |
reboot_type = self.op.reboot_type
|
2115 |
extra_args = getattr(self.op, "extra_args", "") |
2116 |
|
2117 |
node_current = instance.primary_node |
2118 |
|
2119 |
if reboot_type not in [constants.INSTANCE_REBOOT_SOFT, |
2120 |
constants.INSTANCE_REBOOT_HARD, |
2121 |
constants.INSTANCE_REBOOT_FULL]: |
2122 |
raise errors.ParameterError("reboot type not in [%s, %s, %s]" % |
2123 |
(constants.INSTANCE_REBOOT_SOFT, |
2124 |
constants.INSTANCE_REBOOT_HARD, |
2125 |
constants.INSTANCE_REBOOT_FULL)) |
2126 |
|
2127 |
if reboot_type in [constants.INSTANCE_REBOOT_SOFT, |
2128 |
constants.INSTANCE_REBOOT_HARD]: |
2129 |
if not rpc.call_instance_reboot(node_current, instance, |
2130 |
reboot_type, extra_args): |
2131 |
raise errors.OpExecError("Could not reboot instance") |
2132 |
else:
|
2133 |
if not rpc.call_instance_shutdown(node_current, instance): |
2134 |
raise errors.OpExecError("could not shutdown instance for full reboot") |
2135 |
_ShutdownInstanceDisks(instance, self.cfg)
|
2136 |
_StartInstanceDisks(self.cfg, instance, ignore_secondaries)
|
2137 |
if not rpc.call_instance_start(node_current, instance, extra_args): |
2138 |
_ShutdownInstanceDisks(instance, self.cfg)
|
2139 |
raise errors.OpExecError("Could not start instance for full reboot") |
2140 |
|
2141 |
self.cfg.MarkInstanceUp(instance.name)
|
2142 |
|
2143 |
|
2144 |
class LUShutdownInstance(LogicalUnit): |
2145 |
"""Shutdown an instance.
|
2146 |
|
2147 |
"""
|
2148 |
HPATH = "instance-stop"
|
2149 |
HTYPE = constants.HTYPE_INSTANCE |
2150 |
_OP_REQP = ["instance_name"]
|
2151 |
REQ_BGL = False
|
2152 |
|
2153 |
def ExpandNames(self): |
2154 |
self._ExpandAndLockInstance()
|
2155 |
self.needed_locks[locking.LEVEL_NODE] = []
|
2156 |
self.recalculate_locks[locking.LEVEL_NODE] = 'replace' |
2157 |
|
2158 |
def DeclareLocks(self, level): |
2159 |
if level == locking.LEVEL_NODE:
|
2160 |
self._LockInstancesNodes()
|
2161 |
|
2162 |
def BuildHooksEnv(self): |
2163 |
"""Build hooks env.
|
2164 |
|
2165 |
This runs on master, primary and secondary nodes of the instance.
|
2166 |
|
2167 |
"""
|
2168 |
env = _BuildInstanceHookEnvByObject(self.instance)
|
2169 |
nl = ([self.sstore.GetMasterNode(), self.instance.primary_node] + |
2170 |
list(self.instance.secondary_nodes)) |
2171 |
return env, nl, nl
|
2172 |
|
2173 |
def CheckPrereq(self): |
2174 |
"""Check prerequisites.
|
2175 |
|
2176 |
This checks that the instance is in the cluster.
|
2177 |
|
2178 |
"""
|
2179 |
self.instance = self.cfg.GetInstanceInfo(self.op.instance_name) |
2180 |
assert self.instance is not None, \ |
2181 |
"Cannot retrieve locked instance %s" % self.op.instance_name |
2182 |
|
2183 |
def Exec(self, feedback_fn): |
2184 |
"""Shutdown the instance.
|
2185 |
|
2186 |
"""
|
2187 |
instance = self.instance
|
2188 |
node_current = instance.primary_node |
2189 |
self.cfg.MarkInstanceDown(instance.name)
|
2190 |
if not rpc.call_instance_shutdown(node_current, instance): |
2191 |
logger.Error("could not shutdown instance")
|
2192 |
|
2193 |
_ShutdownInstanceDisks(instance, self.cfg)
|
2194 |
|
2195 |
|
2196 |
class LUReinstallInstance(LogicalUnit): |
2197 |
"""Reinstall an instance.
|
2198 |
|
2199 |
"""
|
2200 |
HPATH = "instance-reinstall"
|
2201 |
HTYPE = constants.HTYPE_INSTANCE |
2202 |
_OP_REQP = ["instance_name"]
|
2203 |
REQ_BGL = False
|
2204 |
|
2205 |
def ExpandNames(self): |
2206 |
self._ExpandAndLockInstance()
|
2207 |
self.needed_locks[locking.LEVEL_NODE] = []
|
2208 |
self.recalculate_locks[locking.LEVEL_NODE] = 'replace' |
2209 |
|
2210 |
def DeclareLocks(self, level): |
2211 |
if level == locking.LEVEL_NODE:
|
2212 |
self._LockInstancesNodes()
|
2213 |
|
2214 |
def BuildHooksEnv(self): |
2215 |
"""Build hooks env.
|
2216 |
|
2217 |
This runs on master, primary and secondary nodes of the instance.
|
2218 |
|
2219 |
"""
|
2220 |
env = _BuildInstanceHookEnvByObject(self.instance)
|
2221 |
nl = ([self.sstore.GetMasterNode(), self.instance.primary_node] + |
2222 |
list(self.instance.secondary_nodes)) |
2223 |
return env, nl, nl
|
2224 |
|
2225 |
def CheckPrereq(self): |
2226 |
"""Check prerequisites.
|
2227 |
|
2228 |
This checks that the instance is in the cluster and is not running.
|
2229 |
|
2230 |
"""
|
2231 |
instance = self.cfg.GetInstanceInfo(self.op.instance_name) |
2232 |
assert instance is not None, \ |
2233 |
"Cannot retrieve locked instance %s" % self.op.instance_name |
2234 |
|
2235 |
if instance.disk_template == constants.DT_DISKLESS:
|
2236 |
raise errors.OpPrereqError("Instance '%s' has no disks" % |
2237 |
self.op.instance_name)
|
2238 |
if instance.status != "down": |
2239 |
raise errors.OpPrereqError("Instance '%s' is marked to be up" % |
2240 |
self.op.instance_name)
|
2241 |
remote_info = rpc.call_instance_info(instance.primary_node, instance.name) |
2242 |
if remote_info:
|
2243 |
raise errors.OpPrereqError("Instance '%s' is running on the node %s" % |
2244 |
(self.op.instance_name,
|
2245 |
instance.primary_node)) |
2246 |
|
2247 |
self.op.os_type = getattr(self.op, "os_type", None) |
2248 |
if self.op.os_type is not None: |
2249 |
# OS verification
|
2250 |
pnode = self.cfg.GetNodeInfo(
|
2251 |
self.cfg.ExpandNodeName(instance.primary_node))
|
2252 |
if pnode is None: |
2253 |
raise errors.OpPrereqError("Primary node '%s' is unknown" % |
2254 |
self.op.pnode)
|
2255 |
os_obj = rpc.call_os_get(pnode.name, self.op.os_type)
|
2256 |
if not os_obj: |
2257 |
raise errors.OpPrereqError("OS '%s' not in supported OS list for" |
2258 |
" primary node" % self.op.os_type) |
2259 |
|
2260 |
self.instance = instance
|
2261 |
|
2262 |
def Exec(self, feedback_fn): |
2263 |
"""Reinstall the instance.
|
2264 |
|
2265 |
"""
|
2266 |
inst = self.instance
|
2267 |
|
2268 |
if self.op.os_type is not None: |
2269 |
feedback_fn("Changing OS to '%s'..." % self.op.os_type) |
2270 |
inst.os = self.op.os_type
|
2271 |
self.cfg.AddInstance(inst)
|
2272 |
|
2273 |
_StartInstanceDisks(self.cfg, inst, None) |
2274 |
try:
|
2275 |
feedback_fn("Running the instance OS create scripts...")
|
2276 |
if not rpc.call_instance_os_add(inst.primary_node, inst, "sda", "sdb"): |
2277 |
raise errors.OpExecError("Could not install OS for instance %s" |
2278 |
" on node %s" %
|
2279 |
(inst.name, inst.primary_node)) |
2280 |
finally:
|
2281 |
_ShutdownInstanceDisks(inst, self.cfg)
|
2282 |
|
2283 |
|
2284 |
class LURenameInstance(LogicalUnit): |
2285 |
"""Rename an instance.
|
2286 |
|
2287 |
"""
|
2288 |
HPATH = "instance-rename"
|
2289 |
HTYPE = constants.HTYPE_INSTANCE |
2290 |
_OP_REQP = ["instance_name", "new_name"] |
2291 |
|
2292 |
def BuildHooksEnv(self): |
2293 |
"""Build hooks env.
|
2294 |
|
2295 |
This runs on master, primary and secondary nodes of the instance.
|
2296 |
|
2297 |
"""
|
2298 |
env = _BuildInstanceHookEnvByObject(self.instance)
|
2299 |
env["INSTANCE_NEW_NAME"] = self.op.new_name |
2300 |
nl = ([self.sstore.GetMasterNode(), self.instance.primary_node] + |
2301 |
list(self.instance.secondary_nodes)) |
2302 |
return env, nl, nl
|
2303 |
|
2304 |
def CheckPrereq(self): |
2305 |
"""Check prerequisites.
|
2306 |
|
2307 |
This checks that the instance is in the cluster and is not running.
|
2308 |
|
2309 |
"""
|
2310 |
instance = self.cfg.GetInstanceInfo(
|
2311 |
self.cfg.ExpandInstanceName(self.op.instance_name)) |
2312 |
if instance is None: |
2313 |
raise errors.OpPrereqError("Instance '%s' not known" % |
2314 |
self.op.instance_name)
|
2315 |
if instance.status != "down": |
2316 |
raise errors.OpPrereqError("Instance '%s' is marked to be up" % |
2317 |
self.op.instance_name)
|
2318 |
remote_info = rpc.call_instance_info(instance.primary_node, instance.name) |
2319 |
if remote_info:
|
2320 |
raise errors.OpPrereqError("Instance '%s' is running on the node %s" % |
2321 |
(self.op.instance_name,
|
2322 |
instance.primary_node)) |
2323 |
self.instance = instance
|
2324 |
|
2325 |
# new name verification
|
2326 |
name_info = utils.HostInfo(self.op.new_name)
|
2327 |
|
2328 |
self.op.new_name = new_name = name_info.name
|
2329 |
instance_list = self.cfg.GetInstanceList()
|
2330 |
if new_name in instance_list: |
2331 |
raise errors.OpPrereqError("Instance '%s' is already in the cluster" % |
2332 |
new_name) |
2333 |
|
2334 |
if not getattr(self.op, "ignore_ip", False): |
2335 |
if utils.TcpPing(name_info.ip, constants.DEFAULT_NODED_PORT):
|
2336 |
raise errors.OpPrereqError("IP %s of instance %s already in use" % |
2337 |
(name_info.ip, new_name)) |
2338 |
|
2339 |
|
2340 |
def Exec(self, feedback_fn): |
2341 |
"""Reinstall the instance.
|
2342 |
|
2343 |
"""
|
2344 |
inst = self.instance
|
2345 |
old_name = inst.name |
2346 |
|
2347 |
if inst.disk_template == constants.DT_FILE:
|
2348 |
old_file_storage_dir = os.path.dirname(inst.disks[0].logical_id[1]) |
2349 |
|
2350 |
self.cfg.RenameInstance(inst.name, self.op.new_name) |
2351 |
# Change the instance lock. This is definitely safe while we hold the BGL
|
2352 |
self.context.glm.remove(locking.LEVEL_INSTANCE, inst.name)
|
2353 |
self.context.glm.add(locking.LEVEL_INSTANCE, self.op.new_name) |
2354 |
|
2355 |
# re-read the instance from the configuration after rename
|
2356 |
inst = self.cfg.GetInstanceInfo(self.op.new_name) |
2357 |
|
2358 |
if inst.disk_template == constants.DT_FILE:
|
2359 |
new_file_storage_dir = os.path.dirname(inst.disks[0].logical_id[1]) |
2360 |
result = rpc.call_file_storage_dir_rename(inst.primary_node, |
2361 |
old_file_storage_dir, |
2362 |
new_file_storage_dir) |
2363 |
|
2364 |
if not result: |
2365 |
raise errors.OpExecError("Could not connect to node '%s' to rename" |
2366 |
" directory '%s' to '%s' (but the instance"
|
2367 |
" has been renamed in Ganeti)" % (
|
2368 |
inst.primary_node, old_file_storage_dir, |
2369 |
new_file_storage_dir)) |
2370 |
|
2371 |
if not result[0]: |
2372 |
raise errors.OpExecError("Could not rename directory '%s' to '%s'" |
2373 |
" (but the instance has been renamed in"
|
2374 |
" Ganeti)" % (old_file_storage_dir,
|
2375 |
new_file_storage_dir)) |
2376 |
|
2377 |
_StartInstanceDisks(self.cfg, inst, None) |
2378 |
try:
|
2379 |
if not rpc.call_instance_run_rename(inst.primary_node, inst, old_name, |
2380 |
"sda", "sdb"): |
2381 |
msg = ("Could run OS rename script for instance %s on node %s (but the"
|
2382 |
" instance has been renamed in Ganeti)" %
|
2383 |
(inst.name, inst.primary_node)) |
2384 |
logger.Error(msg) |
2385 |
finally:
|
2386 |
_ShutdownInstanceDisks(inst, self.cfg)
|
2387 |
|
2388 |
|
2389 |
class LURemoveInstance(LogicalUnit): |
2390 |
"""Remove an instance.
|
2391 |
|
2392 |
"""
|
2393 |
HPATH = "instance-remove"
|
2394 |
HTYPE = constants.HTYPE_INSTANCE |
2395 |
_OP_REQP = ["instance_name", "ignore_failures"] |
2396 |
|
2397 |
def BuildHooksEnv(self): |
2398 |
"""Build hooks env.
|
2399 |
|
2400 |
This runs on master, primary and secondary nodes of the instance.
|
2401 |
|
2402 |
"""
|
2403 |
env = _BuildInstanceHookEnvByObject(self.instance)
|
2404 |
nl = [self.sstore.GetMasterNode()]
|
2405 |
return env, nl, nl
|
2406 |
|
2407 |
def CheckPrereq(self): |
2408 |
"""Check prerequisites.
|
2409 |
|
2410 |
This checks that the instance is in the cluster.
|
2411 |
|
2412 |
"""
|
2413 |
instance = self.cfg.GetInstanceInfo(
|
2414 |
self.cfg.ExpandInstanceName(self.op.instance_name)) |
2415 |
if instance is None: |
2416 |
raise errors.OpPrereqError("Instance '%s' not known" % |
2417 |
self.op.instance_name)
|
2418 |
self.instance = instance
|
2419 |
|
2420 |
def Exec(self, feedback_fn): |
2421 |
"""Remove the instance.
|
2422 |
|
2423 |
"""
|
2424 |
instance = self.instance
|
2425 |
logger.Info("shutting down instance %s on node %s" %
|
2426 |
(instance.name, instance.primary_node)) |
2427 |
|
2428 |
if not rpc.call_instance_shutdown(instance.primary_node, instance): |
2429 |
if self.op.ignore_failures: |
2430 |
feedback_fn("Warning: can't shutdown instance")
|
2431 |
else:
|
2432 |
raise errors.OpExecError("Could not shutdown instance %s on node %s" % |
2433 |
(instance.name, instance.primary_node)) |
2434 |
|
2435 |
logger.Info("removing block devices for instance %s" % instance.name)
|
2436 |
|
2437 |
if not _RemoveDisks(instance, self.cfg): |
2438 |
if self.op.ignore_failures: |
2439 |
feedback_fn("Warning: can't remove instance's disks")
|
2440 |
else:
|
2441 |
raise errors.OpExecError("Can't remove instance's disks") |
2442 |
|
2443 |
logger.Info("removing instance %s out of cluster config" % instance.name)
|
2444 |
|
2445 |
self.cfg.RemoveInstance(instance.name)
|
2446 |
# Remove the new instance from the Ganeti Lock Manager
|
2447 |
self.context.glm.remove(locking.LEVEL_INSTANCE, instance.name)
|
2448 |
|
2449 |
|
2450 |
class LUQueryInstances(NoHooksLU): |
2451 |
"""Logical unit for querying instances.
|
2452 |
|
2453 |
"""
|
2454 |
_OP_REQP = ["output_fields", "names"] |
2455 |
|
2456 |
def CheckPrereq(self): |
2457 |
"""Check prerequisites.
|
2458 |
|
2459 |
This checks that the fields required are valid output fields.
|
2460 |
|
2461 |
"""
|
2462 |
self.dynamic_fields = frozenset(["oper_state", "oper_ram", "status"]) |
2463 |
_CheckOutputFields(static=["name", "os", "pnode", "snodes", |
2464 |
"admin_state", "admin_ram", |
2465 |
"disk_template", "ip", "mac", "bridge", |
2466 |
"sda_size", "sdb_size", "vcpus", "tags"], |
2467 |
dynamic=self.dynamic_fields,
|
2468 |
selected=self.op.output_fields)
|
2469 |
|
2470 |
self.wanted = _GetWantedInstances(self, self.op.names) |
2471 |
|
2472 |
def Exec(self, feedback_fn): |
2473 |
"""Computes the list of nodes and their attributes.
|
2474 |
|
2475 |
"""
|
2476 |
instance_names = self.wanted
|
2477 |
instance_list = [self.cfg.GetInstanceInfo(iname) for iname |
2478 |
in instance_names]
|
2479 |
|
2480 |
# begin data gathering
|
2481 |
|
2482 |
nodes = frozenset([inst.primary_node for inst in instance_list]) |
2483 |
|
2484 |
bad_nodes = [] |
2485 |
if self.dynamic_fields.intersection(self.op.output_fields): |
2486 |
live_data = {} |
2487 |
node_data = rpc.call_all_instances_info(nodes) |
2488 |
for name in nodes: |
2489 |
result = node_data[name] |
2490 |
if result:
|
2491 |
live_data.update(result) |
2492 |
elif result == False: |
2493 |
bad_nodes.append(name) |
2494 |
# else no instance is alive
|
2495 |
else:
|
2496 |
live_data = dict([(name, {}) for name in instance_names]) |
2497 |
|
2498 |
# end data gathering
|
2499 |
|
2500 |
output = [] |
2501 |
for instance in instance_list: |
2502 |
iout = [] |
2503 |
for field in self.op.output_fields: |
2504 |
if field == "name": |
2505 |
val = instance.name |
2506 |
elif field == "os": |
2507 |
val = instance.os |
2508 |
elif field == "pnode": |
2509 |
val = instance.primary_node |
2510 |
elif field == "snodes": |
2511 |
val = list(instance.secondary_nodes)
|
2512 |
elif field == "admin_state": |
2513 |
val = (instance.status != "down")
|
2514 |
elif field == "oper_state": |
2515 |
if instance.primary_node in bad_nodes: |
2516 |
val = None
|
2517 |
else:
|
2518 |
val = bool(live_data.get(instance.name))
|
2519 |
elif field == "status": |
2520 |
if instance.primary_node in bad_nodes: |
2521 |
val = "ERROR_nodedown"
|
2522 |
else:
|
2523 |
running = bool(live_data.get(instance.name))
|
2524 |
if running:
|
2525 |
if instance.status != "down": |
2526 |
val = "running"
|
2527 |
else:
|
2528 |
val = "ERROR_up"
|
2529 |
else:
|
2530 |
if instance.status != "down": |
2531 |
val = "ERROR_down"
|
2532 |
else:
|
2533 |
val = "ADMIN_down"
|
2534 |
elif field == "admin_ram": |
2535 |
val = instance.memory |
2536 |
elif field == "oper_ram": |
2537 |
if instance.primary_node in bad_nodes: |
2538 |
val = None
|
2539 |
elif instance.name in live_data: |
2540 |
val = live_data[instance.name].get("memory", "?") |
2541 |
else:
|
2542 |
val = "-"
|
2543 |
elif field == "disk_template": |
2544 |
val = instance.disk_template |
2545 |
elif field == "ip": |
2546 |
val = instance.nics[0].ip
|
2547 |
elif field == "bridge": |
2548 |
val = instance.nics[0].bridge
|
2549 |
elif field == "mac": |
2550 |
val = instance.nics[0].mac
|
2551 |
elif field == "sda_size" or field == "sdb_size": |
2552 |
disk = instance.FindDisk(field[:3])
|
2553 |
if disk is None: |
2554 |
val = None
|
2555 |
else:
|
2556 |
val = disk.size |
2557 |
elif field == "vcpus": |
2558 |
val = instance.vcpus |
2559 |
elif field == "tags": |
2560 |
val = list(instance.GetTags())
|
2561 |
else:
|
2562 |
raise errors.ParameterError(field)
|
2563 |
iout.append(val) |
2564 |
output.append(iout) |
2565 |
|
2566 |
return output
|
2567 |
|
2568 |
|
2569 |
class LUFailoverInstance(LogicalUnit): |
2570 |
"""Failover an instance.
|
2571 |
|
2572 |
"""
|
2573 |
HPATH = "instance-failover"
|
2574 |
HTYPE = constants.HTYPE_INSTANCE |
2575 |
_OP_REQP = ["instance_name", "ignore_consistency"] |
2576 |
REQ_BGL = False
|
2577 |
|
2578 |
def ExpandNames(self): |
2579 |
self._ExpandAndLockInstance()
|
2580 |
self.needed_locks[locking.LEVEL_NODE] = []
|
2581 |
self.recalculate_locks[locking.LEVEL_NODE] = 'replace' |
2582 |
|
2583 |
def DeclareLocks(self, level): |
2584 |
if level == locking.LEVEL_NODE:
|
2585 |
self._LockInstancesNodes()
|
2586 |
|
2587 |
def BuildHooksEnv(self): |
2588 |
"""Build hooks env.
|
2589 |
|
2590 |
This runs on master, primary and secondary nodes of the instance.
|
2591 |
|
2592 |
"""
|
2593 |
env = { |
2594 |
"IGNORE_CONSISTENCY": self.op.ignore_consistency, |
2595 |
} |
2596 |
env.update(_BuildInstanceHookEnvByObject(self.instance))
|
2597 |
nl = [self.sstore.GetMasterNode()] + list(self.instance.secondary_nodes) |
2598 |
return env, nl, nl
|
2599 |
|
2600 |
def CheckPrereq(self): |
2601 |
"""Check prerequisites.
|
2602 |
|
2603 |
This checks that the instance is in the cluster.
|
2604 |
|
2605 |
"""
|
2606 |
self.instance = instance = self.cfg.GetInstanceInfo(self.op.instance_name) |
2607 |
assert self.instance is not None, \ |
2608 |
"Cannot retrieve locked instance %s" % self.op.instance_name |
2609 |
|
2610 |
if instance.disk_template not in constants.DTS_NET_MIRROR: |
2611 |
raise errors.OpPrereqError("Instance's disk layout is not" |
2612 |
" network mirrored, cannot failover.")
|
2613 |
|
2614 |
secondary_nodes = instance.secondary_nodes |
2615 |
if not secondary_nodes: |
2616 |
raise errors.ProgrammerError("no secondary node but using " |
2617 |
"a mirrored disk template")
|
2618 |
|
2619 |
target_node = secondary_nodes[0]
|
2620 |
# check memory requirements on the secondary node
|
2621 |
_CheckNodeFreeMemory(self.cfg, target_node, "failing over instance %s" % |
2622 |
instance.name, instance.memory) |
2623 |
|
2624 |
# check bridge existance
|
2625 |
brlist = [nic.bridge for nic in instance.nics] |
2626 |
if not rpc.call_bridges_exist(target_node, brlist): |
2627 |
raise errors.OpPrereqError("One or more target bridges %s does not" |
2628 |
" exist on destination node '%s'" %
|
2629 |
(brlist, target_node)) |
2630 |
|
2631 |
def Exec(self, feedback_fn): |
2632 |
"""Failover an instance.
|
2633 |
|
2634 |
The failover is done by shutting it down on its present node and
|
2635 |
starting it on the secondary.
|
2636 |
|
2637 |
"""
|
2638 |
instance = self.instance
|
2639 |
|
2640 |
source_node = instance.primary_node |
2641 |
target_node = instance.secondary_nodes[0]
|
2642 |
|
2643 |
feedback_fn("* checking disk consistency between source and target")
|
2644 |
for dev in instance.disks: |
2645 |
# for drbd, these are drbd over lvm
|
2646 |
if not _CheckDiskConsistency(self.cfg, dev, target_node, False): |
2647 |
if instance.status == "up" and not self.op.ignore_consistency: |
2648 |
raise errors.OpExecError("Disk %s is degraded on target node," |
2649 |
" aborting failover." % dev.iv_name)
|
2650 |
|
2651 |
feedback_fn("* shutting down instance on source node")
|
2652 |
logger.Info("Shutting down instance %s on node %s" %
|
2653 |
(instance.name, source_node)) |
2654 |
|
2655 |
if not rpc.call_instance_shutdown(source_node, instance): |
2656 |
if self.op.ignore_consistency: |
2657 |
logger.Error("Could not shutdown instance %s on node %s. Proceeding"
|
2658 |
" anyway. Please make sure node %s is down" %
|
2659 |
(instance.name, source_node, source_node)) |
2660 |
else:
|
2661 |
raise errors.OpExecError("Could not shutdown instance %s on node %s" % |
2662 |
(instance.name, source_node)) |
2663 |
|
2664 |
feedback_fn("* deactivating the instance's disks on source node")
|
2665 |
if not _ShutdownInstanceDisks(instance, self.cfg, ignore_primary=True): |
2666 |
raise errors.OpExecError("Can't shut down the instance's disks.") |
2667 |
|
2668 |
instance.primary_node = target_node |
2669 |
# distribute new instance config to the other nodes
|
2670 |
self.cfg.Update(instance)
|
2671 |
|
2672 |
# Only start the instance if it's marked as up
|
2673 |
if instance.status == "up": |
2674 |
feedback_fn("* activating the instance's disks on target node")
|
2675 |
logger.Info("Starting instance %s on node %s" %
|
2676 |
(instance.name, target_node)) |
2677 |
|
2678 |
disks_ok, dummy = _AssembleInstanceDisks(instance, self.cfg,
|
2679 |
ignore_secondaries=True)
|
2680 |
if not disks_ok: |
2681 |
_ShutdownInstanceDisks(instance, self.cfg)
|
2682 |
raise errors.OpExecError("Can't activate the instance's disks") |
2683 |
|
2684 |
feedback_fn("* starting the instance on the target node")
|
2685 |
if not rpc.call_instance_start(target_node, instance, None): |
2686 |
_ShutdownInstanceDisks(instance, self.cfg)
|
2687 |
raise errors.OpExecError("Could not start instance %s on node %s." % |
2688 |
(instance.name, target_node)) |
2689 |
|
2690 |
|
2691 |
def _CreateBlockDevOnPrimary(cfg, node, instance, device, info): |
2692 |
"""Create a tree of block devices on the primary node.
|
2693 |
|
2694 |
This always creates all devices.
|
2695 |
|
2696 |
"""
|
2697 |
if device.children:
|
2698 |
for child in device.children: |
2699 |
if not _CreateBlockDevOnPrimary(cfg, node, instance, child, info): |
2700 |
return False |
2701 |
|
2702 |
cfg.SetDiskID(device, node) |
2703 |
new_id = rpc.call_blockdev_create(node, device, device.size, |
2704 |
instance.name, True, info)
|
2705 |
if not new_id: |
2706 |
return False |
2707 |
if device.physical_id is None: |
2708 |
device.physical_id = new_id |
2709 |
return True |
2710 |
|
2711 |
|
2712 |
def _CreateBlockDevOnSecondary(cfg, node, instance, device, force, info): |
2713 |
"""Create a tree of block devices on a secondary node.
|
2714 |
|
2715 |
If this device type has to be created on secondaries, create it and
|
2716 |
all its children.
|
2717 |
|
2718 |
If not, just recurse to children keeping the same 'force' value.
|
2719 |
|
2720 |
"""
|
2721 |
if device.CreateOnSecondary():
|
2722 |
force = True
|
2723 |
if device.children:
|
2724 |
for child in device.children: |
2725 |
if not _CreateBlockDevOnSecondary(cfg, node, instance, |
2726 |
child, force, info): |
2727 |
return False |
2728 |
|
2729 |
if not force: |
2730 |
return True |
2731 |
cfg.SetDiskID(device, node) |
2732 |
new_id = rpc.call_blockdev_create(node, device, device.size, |
2733 |
instance.name, False, info)
|
2734 |
if not new_id: |
2735 |
return False |
2736 |
if device.physical_id is None: |
2737 |
device.physical_id = new_id |
2738 |
return True |
2739 |
|
2740 |
|
2741 |
def _GenerateUniqueNames(cfg, exts): |
2742 |
"""Generate a suitable LV name.
|
2743 |
|
2744 |
This will generate a logical volume name for the given instance.
|
2745 |
|
2746 |
"""
|
2747 |
results = [] |
2748 |
for val in exts: |
2749 |
new_id = cfg.GenerateUniqueID() |
2750 |
results.append("%s%s" % (new_id, val))
|
2751 |
return results
|
2752 |
|
2753 |
|
2754 |
def _GenerateDRBD8Branch(cfg, primary, secondary, size, names, iv_name): |
2755 |
"""Generate a drbd8 device complete with its children.
|
2756 |
|
2757 |
"""
|
2758 |
port = cfg.AllocatePort() |
2759 |
vgname = cfg.GetVGName() |
2760 |
dev_data = objects.Disk(dev_type=constants.LD_LV, size=size, |
2761 |
logical_id=(vgname, names[0]))
|
2762 |
dev_meta = objects.Disk(dev_type=constants.LD_LV, size=128,
|
2763 |
logical_id=(vgname, names[1]))
|
2764 |
drbd_dev = objects.Disk(dev_type=constants.LD_DRBD8, size=size, |
2765 |
logical_id = (primary, secondary, port), |
2766 |
children = [dev_data, dev_meta], |
2767 |
iv_name=iv_name) |
2768 |
return drbd_dev
|
2769 |
|
2770 |
|
2771 |
def _GenerateDiskTemplate(cfg, template_name, |
2772 |
instance_name, primary_node, |
2773 |
secondary_nodes, disk_sz, swap_sz, |
2774 |
file_storage_dir, file_driver): |
2775 |
"""Generate the entire disk layout for a given template type.
|
2776 |
|
2777 |
"""
|
2778 |
#TODO: compute space requirements
|
2779 |
|
2780 |
vgname = cfg.GetVGName() |
2781 |
if template_name == constants.DT_DISKLESS:
|
2782 |
disks = [] |
2783 |
elif template_name == constants.DT_PLAIN:
|
2784 |
if len(secondary_nodes) != 0: |
2785 |
raise errors.ProgrammerError("Wrong template configuration") |
2786 |
|
2787 |
names = _GenerateUniqueNames(cfg, [".sda", ".sdb"]) |
2788 |
sda_dev = objects.Disk(dev_type=constants.LD_LV, size=disk_sz, |
2789 |
logical_id=(vgname, names[0]),
|
2790 |
iv_name = "sda")
|
2791 |
sdb_dev = objects.Disk(dev_type=constants.LD_LV, size=swap_sz, |
2792 |
logical_id=(vgname, names[1]),
|
2793 |
iv_name = "sdb")
|
2794 |
disks = [sda_dev, sdb_dev] |
2795 |
elif template_name == constants.DT_DRBD8:
|
2796 |
if len(secondary_nodes) != 1: |
2797 |
raise errors.ProgrammerError("Wrong template configuration") |
2798 |
remote_node = secondary_nodes[0]
|
2799 |
names = _GenerateUniqueNames(cfg, [".sda_data", ".sda_meta", |
2800 |
".sdb_data", ".sdb_meta"]) |
2801 |
drbd_sda_dev = _GenerateDRBD8Branch(cfg, primary_node, remote_node, |
2802 |
disk_sz, names[0:2], "sda") |
2803 |
drbd_sdb_dev = _GenerateDRBD8Branch(cfg, primary_node, remote_node, |
2804 |
swap_sz, names[2:4], "sdb") |
2805 |
disks = [drbd_sda_dev, drbd_sdb_dev] |
2806 |
elif template_name == constants.DT_FILE:
|
2807 |
if len(secondary_nodes) != 0: |
2808 |
raise errors.ProgrammerError("Wrong template configuration") |
2809 |
|
2810 |
file_sda_dev = objects.Disk(dev_type=constants.LD_FILE, size=disk_sz, |
2811 |
iv_name="sda", logical_id=(file_driver,
|
2812 |
"%s/sda" % file_storage_dir))
|
2813 |
file_sdb_dev = objects.Disk(dev_type=constants.LD_FILE, size=swap_sz, |
2814 |
iv_name="sdb", logical_id=(file_driver,
|
2815 |
"%s/sdb" % file_storage_dir))
|
2816 |
disks = [file_sda_dev, file_sdb_dev] |
2817 |
else:
|
2818 |
raise errors.ProgrammerError("Invalid disk template '%s'" % template_name) |
2819 |
return disks
|
2820 |
|
2821 |
|
2822 |
def _GetInstanceInfoText(instance): |
2823 |
"""Compute that text that should be added to the disk's metadata.
|
2824 |
|
2825 |
"""
|
2826 |
return "originstname+%s" % instance.name |
2827 |
|
2828 |
|
2829 |
def _CreateDisks(cfg, instance): |
2830 |
"""Create all disks for an instance.
|
2831 |
|
2832 |
This abstracts away some work from AddInstance.
|
2833 |
|
2834 |
Args:
|
2835 |
instance: the instance object
|
2836 |
|
2837 |
Returns:
|
2838 |
True or False showing the success of the creation process
|
2839 |
|
2840 |
"""
|
2841 |
info = _GetInstanceInfoText(instance) |
2842 |
|
2843 |
if instance.disk_template == constants.DT_FILE:
|
2844 |
file_storage_dir = os.path.dirname(instance.disks[0].logical_id[1]) |
2845 |
result = rpc.call_file_storage_dir_create(instance.primary_node, |
2846 |
file_storage_dir) |
2847 |
|
2848 |
if not result: |
2849 |
logger.Error("Could not connect to node '%s'" % instance.primary_node)
|
2850 |
return False |
2851 |
|
2852 |
if not result[0]: |
2853 |
logger.Error("failed to create directory '%s'" % file_storage_dir)
|
2854 |
return False |
2855 |
|
2856 |
for device in instance.disks: |
2857 |
logger.Info("creating volume %s for instance %s" %
|
2858 |
(device.iv_name, instance.name)) |
2859 |
#HARDCODE
|
2860 |
for secondary_node in instance.secondary_nodes: |
2861 |
if not _CreateBlockDevOnSecondary(cfg, secondary_node, instance, |
2862 |
device, False, info):
|
2863 |
logger.Error("failed to create volume %s (%s) on secondary node %s!" %
|
2864 |
(device.iv_name, device, secondary_node)) |
2865 |
return False |
2866 |
#HARDCODE
|
2867 |
if not _CreateBlockDevOnPrimary(cfg, instance.primary_node, |
2868 |
instance, device, info): |
2869 |
logger.Error("failed to create volume %s on primary!" %
|
2870 |
device.iv_name) |
2871 |
return False |
2872 |
|
2873 |
return True |
2874 |
|
2875 |
|
2876 |
def _RemoveDisks(instance, cfg): |
2877 |
"""Remove all disks for an instance.
|
2878 |
|
2879 |
This abstracts away some work from `AddInstance()` and
|
2880 |
`RemoveInstance()`. Note that in case some of the devices couldn't
|
2881 |
be removed, the removal will continue with the other ones (compare
|
2882 |
with `_CreateDisks()`).
|
2883 |
|
2884 |
Args:
|
2885 |
instance: the instance object
|
2886 |
|
2887 |
Returns:
|
2888 |
True or False showing the success of the removal proces
|
2889 |
|
2890 |
"""
|
2891 |
logger.Info("removing block devices for instance %s" % instance.name)
|
2892 |
|
2893 |
result = True
|
2894 |
for device in instance.disks: |
2895 |
for node, disk in device.ComputeNodeTree(instance.primary_node): |
2896 |
cfg.SetDiskID(disk, node) |
2897 |
if not rpc.call_blockdev_remove(node, disk): |
2898 |
logger.Error("could not remove block device %s on node %s,"
|
2899 |
" continuing anyway" %
|
2900 |
(device.iv_name, node)) |
2901 |
result = False
|
2902 |
|
2903 |
if instance.disk_template == constants.DT_FILE:
|
2904 |
file_storage_dir = os.path.dirname(instance.disks[0].logical_id[1]) |
2905 |
if not rpc.call_file_storage_dir_remove(instance.primary_node, |
2906 |
file_storage_dir): |
2907 |
logger.Error("could not remove directory '%s'" % file_storage_dir)
|
2908 |
result = False
|
2909 |
|
2910 |
return result
|
2911 |
|
2912 |
|
2913 |
def _ComputeDiskSize(disk_template, disk_size, swap_size): |
2914 |
"""Compute disk size requirements in the volume group
|
2915 |
|
2916 |
This is currently hard-coded for the two-drive layout.
|
2917 |
|
2918 |
"""
|
2919 |
# Required free disk space as a function of disk and swap space
|
2920 |
req_size_dict = { |
2921 |
constants.DT_DISKLESS: None,
|
2922 |
constants.DT_PLAIN: disk_size + swap_size, |
2923 |
# 256 MB are added for drbd metadata, 128MB for each drbd device
|
2924 |
constants.DT_DRBD8: disk_size + swap_size + 256,
|
2925 |
constants.DT_FILE: None,
|
2926 |
} |
2927 |
|
2928 |
if disk_template not in req_size_dict: |
2929 |
raise errors.ProgrammerError("Disk template '%s' size requirement" |
2930 |
" is unknown" % disk_template)
|
2931 |
|
2932 |
return req_size_dict[disk_template]
|
2933 |
|
2934 |
|
2935 |
class LUCreateInstance(LogicalUnit): |
2936 |
"""Create an instance.
|
2937 |
|
2938 |
"""
|
2939 |
HPATH = "instance-add"
|
2940 |
HTYPE = constants.HTYPE_INSTANCE |
2941 |
_OP_REQP = ["instance_name", "mem_size", "disk_size", |
2942 |
"disk_template", "swap_size", "mode", "start", "vcpus", |
2943 |
"wait_for_sync", "ip_check", "mac"] |
2944 |
|
2945 |
def _RunAllocator(self): |
2946 |
"""Run the allocator based on input opcode.
|
2947 |
|
2948 |
"""
|
2949 |
disks = [{"size": self.op.disk_size, "mode": "w"}, |
2950 |
{"size": self.op.swap_size, "mode": "w"}] |
2951 |
nics = [{"mac": self.op.mac, "ip": getattr(self.op, "ip", None), |
2952 |
"bridge": self.op.bridge}] |
2953 |
ial = IAllocator(self.cfg, self.sstore, |
2954 |
mode=constants.IALLOCATOR_MODE_ALLOC, |
2955 |
name=self.op.instance_name,
|
2956 |
disk_template=self.op.disk_template,
|
2957 |
tags=[], |
2958 |
os=self.op.os_type,
|
2959 |
vcpus=self.op.vcpus,
|
2960 |
mem_size=self.op.mem_size,
|
2961 |
disks=disks, |
2962 |
nics=nics, |
2963 |
) |
2964 |
|
2965 |
ial.Run(self.op.iallocator)
|
2966 |
|
2967 |
if not ial.success: |
2968 |
raise errors.OpPrereqError("Can't compute nodes using" |
2969 |
" iallocator '%s': %s" % (self.op.iallocator, |
2970 |
ial.info)) |
2971 |
if len(ial.nodes) != ial.required_nodes: |
2972 |
raise errors.OpPrereqError("iallocator '%s' returned invalid number" |
2973 |
" of nodes (%s), required %s" %
|
2974 |
(len(ial.nodes), ial.required_nodes))
|
2975 |
self.op.pnode = ial.nodes[0] |
2976 |
logger.ToStdout("Selected nodes for the instance: %s" %
|
2977 |
(", ".join(ial.nodes),))
|
2978 |
logger.Info("Selected nodes for instance %s via iallocator %s: %s" %
|
2979 |
(self.op.instance_name, self.op.iallocator, ial.nodes)) |
2980 |
if ial.required_nodes == 2: |
2981 |
self.op.snode = ial.nodes[1] |
2982 |
|
2983 |
def BuildHooksEnv(self): |
2984 |
"""Build hooks env.
|
2985 |
|
2986 |
This runs on master, primary and secondary nodes of the instance.
|
2987 |
|
2988 |
"""
|
2989 |
env = { |
2990 |
"INSTANCE_DISK_TEMPLATE": self.op.disk_template, |
2991 |
"INSTANCE_DISK_SIZE": self.op.disk_size, |
2992 |
"INSTANCE_SWAP_SIZE": self.op.swap_size, |
2993 |
"INSTANCE_ADD_MODE": self.op.mode, |
2994 |
} |
2995 |
if self.op.mode == constants.INSTANCE_IMPORT: |
2996 |
env["INSTANCE_SRC_NODE"] = self.op.src_node |
2997 |
env["INSTANCE_SRC_PATH"] = self.op.src_path |
2998 |
env["INSTANCE_SRC_IMAGE"] = self.src_image |
2999 |
|
3000 |
env.update(_BuildInstanceHookEnv(name=self.op.instance_name,
|
3001 |
primary_node=self.op.pnode,
|
3002 |
secondary_nodes=self.secondaries,
|
3003 |
status=self.instance_status,
|
3004 |
os_type=self.op.os_type,
|
3005 |
memory=self.op.mem_size,
|
3006 |
vcpus=self.op.vcpus,
|
3007 |
nics=[(self.inst_ip, self.op.bridge, self.op.mac)], |
3008 |
)) |
3009 |
|
3010 |
nl = ([self.sstore.GetMasterNode(), self.op.pnode] + |
3011 |
self.secondaries)
|
3012 |
return env, nl, nl
|
3013 |
|
3014 |
|
3015 |
def CheckPrereq(self): |
3016 |
"""Check prerequisites.
|
3017 |
|
3018 |
"""
|
3019 |
# set optional parameters to none if they don't exist
|
3020 |
for attr in ["kernel_path", "initrd_path", "hvm_boot_order", "pnode", |
3021 |
"iallocator", "hvm_acpi", "hvm_pae", "hvm_cdrom_image_path", |
3022 |
"vnc_bind_address"]:
|
3023 |
if not hasattr(self.op, attr): |
3024 |
setattr(self.op, attr, None) |
3025 |
|
3026 |
if self.op.mode not in (constants.INSTANCE_CREATE, |
3027 |
constants.INSTANCE_IMPORT): |
3028 |
raise errors.OpPrereqError("Invalid instance creation mode '%s'" % |
3029 |
self.op.mode)
|
3030 |
|
3031 |
if (not self.cfg.GetVGName() and |
3032 |
self.op.disk_template not in constants.DTS_NOT_LVM): |
3033 |
raise errors.OpPrereqError("Cluster does not support lvm-based" |
3034 |
" instances")
|
3035 |
|
3036 |
if self.op.mode == constants.INSTANCE_IMPORT: |
3037 |
src_node = getattr(self.op, "src_node", None) |
3038 |
src_path = getattr(self.op, "src_path", None) |
3039 |
if src_node is None or src_path is None: |
3040 |
raise errors.OpPrereqError("Importing an instance requires source" |
3041 |
" node and path options")
|
3042 |
src_node_full = self.cfg.ExpandNodeName(src_node)
|
3043 |
if src_node_full is None: |
3044 |
raise errors.OpPrereqError("Unknown source node '%s'" % src_node) |
3045 |
self.op.src_node = src_node = src_node_full
|
3046 |
|
3047 |
if not os.path.isabs(src_path): |
3048 |
raise errors.OpPrereqError("The source path must be absolute") |
3049 |
|
3050 |
export_info = rpc.call_export_info(src_node, src_path) |
3051 |
|
3052 |
if not export_info: |
3053 |
raise errors.OpPrereqError("No export found in dir %s" % src_path) |
3054 |
|
3055 |
if not export_info.has_section(constants.INISECT_EXP): |
3056 |
raise errors.ProgrammerError("Corrupted export config") |
3057 |
|
3058 |
ei_version = export_info.get(constants.INISECT_EXP, 'version')
|
3059 |
if (int(ei_version) != constants.EXPORT_VERSION): |
3060 |
raise errors.OpPrereqError("Wrong export version %s (wanted %d)" % |
3061 |
(ei_version, constants.EXPORT_VERSION)) |
3062 |
|
3063 |
if int(export_info.get(constants.INISECT_INS, 'disk_count')) > 1: |
3064 |
raise errors.OpPrereqError("Can't import instance with more than" |
3065 |
" one data disk")
|
3066 |
|
3067 |
# FIXME: are the old os-es, disk sizes, etc. useful?
|
3068 |
self.op.os_type = export_info.get(constants.INISECT_EXP, 'os') |
3069 |
diskimage = os.path.join(src_path, export_info.get(constants.INISECT_INS, |
3070 |
'disk0_dump'))
|
3071 |
self.src_image = diskimage
|
3072 |
else: # INSTANCE_CREATE |
3073 |
if getattr(self.op, "os_type", None) is None: |
3074 |
raise errors.OpPrereqError("No guest OS specified") |
3075 |
|
3076 |
#### instance parameters check
|
3077 |
|
3078 |
# disk template and mirror node verification
|
3079 |
if self.op.disk_template not in constants.DISK_TEMPLATES: |
3080 |
raise errors.OpPrereqError("Invalid disk template name") |
3081 |
|
3082 |
# instance name verification
|
3083 |
hostname1 = utils.HostInfo(self.op.instance_name)
|
3084 |
|
3085 |
self.op.instance_name = instance_name = hostname1.name
|
3086 |
instance_list = self.cfg.GetInstanceList()
|
3087 |
if instance_name in instance_list: |
3088 |
raise errors.OpPrereqError("Instance '%s' is already in the cluster" % |
3089 |
instance_name) |
3090 |
|
3091 |
# ip validity checks
|
3092 |
ip = getattr(self.op, "ip", None) |
3093 |
if ip is None or ip.lower() == "none": |
3094 |
inst_ip = None
|
3095 |
elif ip.lower() == "auto": |
3096 |
inst_ip = hostname1.ip |
3097 |
else:
|
3098 |
if not utils.IsValidIP(ip): |
3099 |
raise errors.OpPrereqError("given IP address '%s' doesn't look" |
3100 |
" like a valid IP" % ip)
|
3101 |
inst_ip = ip |
3102 |
self.inst_ip = self.op.ip = inst_ip |
3103 |
|
3104 |
if self.op.start and not self.op.ip_check: |
3105 |
raise errors.OpPrereqError("Cannot ignore IP address conflicts when" |
3106 |
" adding an instance in start mode")
|
3107 |
|
3108 |
if self.op.ip_check: |
3109 |
if utils.TcpPing(hostname1.ip, constants.DEFAULT_NODED_PORT):
|
3110 |
raise errors.OpPrereqError("IP %s of instance %s already in use" % |
3111 |
(hostname1.ip, instance_name)) |
3112 |
|
3113 |
# MAC address verification
|
3114 |
if self.op.mac != "auto": |
3115 |
if not utils.IsValidMac(self.op.mac.lower()): |
3116 |
raise errors.OpPrereqError("invalid MAC address specified: %s" % |
3117 |
self.op.mac)
|
3118 |
|
3119 |
# bridge verification
|
3120 |
bridge = getattr(self.op, "bridge", None) |
3121 |
if bridge is None: |
3122 |
self.op.bridge = self.cfg.GetDefBridge() |
3123 |
else:
|
3124 |
self.op.bridge = bridge
|
3125 |
|
3126 |
# boot order verification
|
3127 |
if self.op.hvm_boot_order is not None: |
3128 |
if len(self.op.hvm_boot_order.strip("acdn")) != 0: |
3129 |
raise errors.OpPrereqError("invalid boot order specified," |
3130 |
" must be one or more of [acdn]")
|
3131 |
# file storage checks
|
3132 |
if (self.op.file_driver and |
3133 |
not self.op.file_driver in constants.FILE_DRIVER): |
3134 |
raise errors.OpPrereqError("Invalid file driver name '%s'" % |
3135 |
self.op.file_driver)
|
3136 |
|
3137 |
if self.op.file_storage_dir and os.path.isabs(self.op.file_storage_dir): |
3138 |
raise errors.OpPrereqError("File storage directory not a relative" |
3139 |
" path")
|
3140 |
#### allocator run
|
3141 |
|
3142 |
if [self.op.iallocator, self.op.pnode].count(None) != 1: |
3143 |
raise errors.OpPrereqError("One and only one of iallocator and primary" |
3144 |
" node must be given")
|
3145 |
|
3146 |
if self.op.iallocator is not None: |
3147 |
self._RunAllocator()
|
3148 |
|
3149 |
#### node related checks
|
3150 |
|
3151 |
# check primary node
|
3152 |
pnode = self.cfg.GetNodeInfo(self.cfg.ExpandNodeName(self.op.pnode)) |
3153 |
if pnode is None: |
3154 |
raise errors.OpPrereqError("Primary node '%s' is unknown" % |
3155 |
self.op.pnode)
|
3156 |
self.op.pnode = pnode.name
|
3157 |
self.pnode = pnode
|
3158 |
self.secondaries = []
|
3159 |
|
3160 |
# mirror node verification
|
3161 |
if self.op.disk_template in constants.DTS_NET_MIRROR: |
3162 |
if getattr(self.op, "snode", None) is None: |
3163 |
raise errors.OpPrereqError("The networked disk templates need" |
3164 |
" a mirror node")
|
3165 |
|
3166 |
snode_name = self.cfg.ExpandNodeName(self.op.snode) |
3167 |
if snode_name is None: |
3168 |
raise errors.OpPrereqError("Unknown secondary node '%s'" % |
3169 |
self.op.snode)
|
3170 |
elif snode_name == pnode.name:
|
3171 |
raise errors.OpPrereqError("The secondary node cannot be" |
3172 |
" the primary node.")
|
3173 |
self.secondaries.append(snode_name)
|
3174 |
|
3175 |
req_size = _ComputeDiskSize(self.op.disk_template,
|
3176 |
self.op.disk_size, self.op.swap_size) |
3177 |
|
3178 |
# Check lv size requirements
|
3179 |
if req_size is not None: |
3180 |
nodenames = [pnode.name] + self.secondaries
|
3181 |
nodeinfo = rpc.call_node_info(nodenames, self.cfg.GetVGName())
|
3182 |
for node in nodenames: |
3183 |
info = nodeinfo.get(node, None)
|
3184 |
if not info: |
3185 |
raise errors.OpPrereqError("Cannot get current information" |
3186 |
" from node '%s'" % node)
|
3187 |
vg_free = info.get('vg_free', None) |
3188 |
if not isinstance(vg_free, int): |
3189 |
raise errors.OpPrereqError("Can't compute free disk space on" |
3190 |
" node %s" % node)
|
3191 |
if req_size > info['vg_free']: |
3192 |
raise errors.OpPrereqError("Not enough disk space on target node %s." |
3193 |
" %d MB available, %d MB required" %
|
3194 |
(node, info['vg_free'], req_size))
|
3195 |
|
3196 |
# os verification
|
3197 |
os_obj = rpc.call_os_get(pnode.name, self.op.os_type)
|
3198 |
if not os_obj: |
3199 |
raise errors.OpPrereqError("OS '%s' not in supported os list for" |
3200 |
" primary node" % self.op.os_type) |
3201 |
|
3202 |
if self.op.kernel_path == constants.VALUE_NONE: |
3203 |
raise errors.OpPrereqError("Can't set instance kernel to none") |
3204 |
|
3205 |
|
3206 |
# bridge check on primary node
|
3207 |
if not rpc.call_bridges_exist(self.pnode.name, [self.op.bridge]): |
3208 |
raise errors.OpPrereqError("target bridge '%s' does not exist on" |
3209 |
" destination node '%s'" %
|
3210 |
(self.op.bridge, pnode.name))
|
3211 |
|
3212 |
# memory check on primary node
|
3213 |
if self.op.start: |
3214 |
_CheckNodeFreeMemory(self.cfg, self.pnode.name, |
3215 |
"creating instance %s" % self.op.instance_name, |
3216 |
self.op.mem_size)
|
3217 |
|
3218 |
# hvm_cdrom_image_path verification
|
3219 |
if self.op.hvm_cdrom_image_path is not None: |
3220 |
if not os.path.isabs(self.op.hvm_cdrom_image_path): |
3221 |
raise errors.OpPrereqError("The path to the HVM CDROM image must" |
3222 |
" be an absolute path or None, not %s" %
|
3223 |
self.op.hvm_cdrom_image_path)
|
3224 |
if not os.path.isfile(self.op.hvm_cdrom_image_path): |
3225 |
raise errors.OpPrereqError("The HVM CDROM image must either be a" |
3226 |
" regular file or a symlink pointing to"
|
3227 |
" an existing regular file, not %s" %
|
3228 |
self.op.hvm_cdrom_image_path)
|
3229 |
|
3230 |
# vnc_bind_address verification
|
3231 |
if self.op.vnc_bind_address is not None: |
3232 |
if not utils.IsValidIP(self.op.vnc_bind_address): |
3233 |
raise errors.OpPrereqError("given VNC bind address '%s' doesn't look" |
3234 |
" like a valid IP address" %
|
3235 |
self.op.vnc_bind_address)
|
3236 |
|
3237 |
if self.op.start: |
3238 |
self.instance_status = 'up' |
3239 |
else:
|
3240 |
self.instance_status = 'down' |
3241 |
|
3242 |
def Exec(self, feedback_fn): |
3243 |
"""Create and add the instance to the cluster.
|
3244 |
|
3245 |
"""
|
3246 |
instance = self.op.instance_name
|
3247 |
pnode_name = self.pnode.name
|
3248 |
|
3249 |
if self.op.mac == "auto": |
3250 |
mac_address = self.cfg.GenerateMAC()
|
3251 |
else:
|
3252 |
mac_address = self.op.mac
|
3253 |
|
3254 |
nic = objects.NIC(bridge=self.op.bridge, mac=mac_address)
|
3255 |
if self.inst_ip is not None: |
3256 |
nic.ip = self.inst_ip
|
3257 |
|
3258 |
ht_kind = self.sstore.GetHypervisorType()
|
3259 |
if ht_kind in constants.HTS_REQ_PORT: |
3260 |
network_port = self.cfg.AllocatePort()
|
3261 |
else:
|
3262 |
network_port = None
|
3263 |
|
3264 |
if self.op.vnc_bind_address is None: |
3265 |
self.op.vnc_bind_address = constants.VNC_DEFAULT_BIND_ADDRESS
|
3266 |
|
3267 |
# this is needed because os.path.join does not accept None arguments
|
3268 |
if self.op.file_storage_dir is None: |
3269 |
string_file_storage_dir = ""
|
3270 |
else:
|
3271 |
string_file_storage_dir = self.op.file_storage_dir
|
3272 |
|
3273 |
# build the full file storage dir path
|
3274 |
file_storage_dir = os.path.normpath(os.path.join( |
3275 |
self.sstore.GetFileStorageDir(),
|
3276 |
string_file_storage_dir, instance)) |
3277 |
|
3278 |
|
3279 |
disks = _GenerateDiskTemplate(self.cfg,
|
3280 |
self.op.disk_template,
|
3281 |
instance, pnode_name, |
3282 |
self.secondaries, self.op.disk_size, |
3283 |
self.op.swap_size,
|
3284 |
file_storage_dir, |
3285 |
self.op.file_driver)
|
3286 |
|
3287 |
iobj = objects.Instance(name=instance, os=self.op.os_type,
|
3288 |
primary_node=pnode_name, |
3289 |
memory=self.op.mem_size,
|
3290 |
vcpus=self.op.vcpus,
|
3291 |
nics=[nic], disks=disks, |
3292 |
disk_template=self.op.disk_template,
|
3293 |
status=self.instance_status,
|
3294 |
network_port=network_port, |
3295 |
kernel_path=self.op.kernel_path,
|
3296 |
initrd_path=self.op.initrd_path,
|
3297 |
hvm_boot_order=self.op.hvm_boot_order,
|
3298 |
hvm_acpi=self.op.hvm_acpi,
|
3299 |
hvm_pae=self.op.hvm_pae,
|
3300 |
hvm_cdrom_image_path=self.op.hvm_cdrom_image_path,
|
3301 |
vnc_bind_address=self.op.vnc_bind_address,
|
3302 |
) |
3303 |
|
3304 |
feedback_fn("* creating instance disks...")
|
3305 |
if not _CreateDisks(self.cfg, iobj): |
3306 |
_RemoveDisks(iobj, self.cfg)
|
3307 |
raise errors.OpExecError("Device creation failed, reverting...") |
3308 |
|
3309 |
feedback_fn("adding instance %s to cluster config" % instance)
|
3310 |
|
3311 |
self.cfg.AddInstance(iobj)
|
3312 |
# Add the new instance to the Ganeti Lock Manager
|
3313 |
self.context.glm.add(locking.LEVEL_INSTANCE, instance)
|
3314 |
|
3315 |
if self.op.wait_for_sync: |
3316 |
disk_abort = not _WaitForSync(self.cfg, iobj, self.proc) |
3317 |
elif iobj.disk_template in constants.DTS_NET_MIRROR: |
3318 |
# make sure the disks are not degraded (still sync-ing is ok)
|
3319 |
time.sleep(15)
|
3320 |
feedback_fn("* checking mirrors status")
|
3321 |
disk_abort = not _WaitForSync(self.cfg, iobj, self.proc, oneshot=True) |
3322 |
else:
|
3323 |
disk_abort = False
|
3324 |
|
3325 |
if disk_abort:
|
3326 |
_RemoveDisks(iobj, self.cfg)
|
3327 |
self.cfg.RemoveInstance(iobj.name)
|
3328 |
# Remove the new instance from the Ganeti Lock Manager
|
3329 |
self.context.glm.remove(locking.LEVEL_INSTANCE, iobj.name)
|
3330 |
raise errors.OpExecError("There are some degraded disks for" |
3331 |
" this instance")
|
3332 |
|
3333 |
feedback_fn("creating os for instance %s on node %s" %
|
3334 |
(instance, pnode_name)) |
3335 |
|
3336 |
if iobj.disk_template != constants.DT_DISKLESS:
|
3337 |
if self.op.mode == constants.INSTANCE_CREATE: |
3338 |
feedback_fn("* running the instance OS create scripts...")
|
3339 |
if not rpc.call_instance_os_add(pnode_name, iobj, "sda", "sdb"): |
3340 |
raise errors.OpExecError("could not add os for instance %s" |
3341 |
" on node %s" %
|
3342 |
(instance, pnode_name)) |
3343 |
|
3344 |
elif self.op.mode == constants.INSTANCE_IMPORT: |
3345 |
feedback_fn("* running the instance OS import scripts...")
|
3346 |
src_node = self.op.src_node
|
3347 |
src_image = self.src_image
|
3348 |
if not rpc.call_instance_os_import(pnode_name, iobj, "sda", "sdb", |
3349 |
src_node, src_image): |
3350 |
raise errors.OpExecError("Could not import os for instance" |
3351 |
" %s on node %s" %
|
3352 |
(instance, pnode_name)) |
3353 |
else:
|
3354 |
# also checked in the prereq part
|
3355 |
raise errors.ProgrammerError("Unknown OS initialization mode '%s'" |
3356 |
% self.op.mode)
|
3357 |
|
3358 |
if self.op.start: |
3359 |
logger.Info("starting instance %s on node %s" % (instance, pnode_name))
|
3360 |
feedback_fn("* starting instance...")
|
3361 |
if not rpc.call_instance_start(pnode_name, iobj, None): |
3362 |
raise errors.OpExecError("Could not start instance") |
3363 |
|
3364 |
|
3365 |
class LUConnectConsole(NoHooksLU): |
3366 |
"""Connect to an instance's console.
|
3367 |
|
3368 |
This is somewhat special in that it returns the command line that
|
3369 |
you need to run on the master node in order to connect to the
|
3370 |
console.
|
3371 |
|
3372 |
"""
|
3373 |
_OP_REQP = ["instance_name"]
|
3374 |
REQ_BGL = False
|
3375 |
|
3376 |
def ExpandNames(self): |
3377 |
self._ExpandAndLockInstance()
|
3378 |
|
3379 |
def CheckPrereq(self): |
3380 |
"""Check prerequisites.
|
3381 |
|
3382 |
This checks that the instance is in the cluster.
|
3383 |
|
3384 |
"""
|
3385 |
self.instance = self.cfg.GetInstanceInfo(self.op.instance_name) |
3386 |
assert self.instance is not None, \ |
3387 |
"Cannot retrieve locked instance %s" % self.op.instance_name |
3388 |
|
3389 |
def Exec(self, feedback_fn): |
3390 |
"""Connect to the console of an instance
|
3391 |
|
3392 |
"""
|
3393 |
instance = self.instance
|
3394 |
node = instance.primary_node |
3395 |
|
3396 |
node_insts = rpc.call_instance_list([node])[node] |
3397 |
if node_insts is False: |
3398 |
raise errors.OpExecError("Can't connect to node %s." % node) |
3399 |
|
3400 |
if instance.name not in node_insts: |
3401 |
raise errors.OpExecError("Instance %s is not running." % instance.name) |
3402 |
|
3403 |
logger.Debug("connecting to console of %s on %s" % (instance.name, node))
|
3404 |
|
3405 |
hyper = hypervisor.GetHypervisor() |
3406 |
console_cmd = hyper.GetShellCommandForConsole(instance) |
3407 |
|
3408 |
# build ssh cmdline
|
3409 |
return self.ssh.BuildCmd(node, "root", console_cmd, batch=True, tty=True) |
3410 |
|
3411 |
|
3412 |
class LUReplaceDisks(LogicalUnit): |
3413 |
"""Replace the disks of an instance.
|
3414 |
|
3415 |
"""
|
3416 |
HPATH = "mirrors-replace"
|
3417 |
HTYPE = constants.HTYPE_INSTANCE |
3418 |
_OP_REQP = ["instance_name", "mode", "disks"] |
3419 |
|
3420 |
def _RunAllocator(self): |
3421 |
"""Compute a new secondary node using an IAllocator.
|
3422 |
|
3423 |
"""
|
3424 |
ial = IAllocator(self.cfg, self.sstore, |
3425 |
mode=constants.IALLOCATOR_MODE_RELOC, |
3426 |
name=self.op.instance_name,
|
3427 |
relocate_from=[self.sec_node])
|
3428 |
|
3429 |
ial.Run(self.op.iallocator)
|
3430 |
|
3431 |
if not ial.success: |
3432 |
raise errors.OpPrereqError("Can't compute nodes using" |
3433 |
" iallocator '%s': %s" % (self.op.iallocator, |
3434 |
ial.info)) |
3435 |
if len(ial.nodes) != ial.required_nodes: |
3436 |
raise errors.OpPrereqError("iallocator '%s' returned invalid number" |
3437 |
" of nodes (%s), required %s" %
|
3438 |
(len(ial.nodes), ial.required_nodes))
|
3439 |
self.op.remote_node = ial.nodes[0] |
3440 |
logger.ToStdout("Selected new secondary for the instance: %s" %
|
3441 |
self.op.remote_node)
|
3442 |
|
3443 |
def BuildHooksEnv(self): |
3444 |
"""Build hooks env.
|
3445 |
|
3446 |
This runs on the master, the primary and all the secondaries.
|
3447 |
|
3448 |
"""
|
3449 |
env = { |
3450 |
"MODE": self.op.mode, |
3451 |
"NEW_SECONDARY": self.op.remote_node, |
3452 |
"OLD_SECONDARY": self.instance.secondary_nodes[0], |
3453 |
} |
3454 |
env.update(_BuildInstanceHookEnvByObject(self.instance))
|
3455 |
nl = [ |
3456 |
self.sstore.GetMasterNode(),
|
3457 |
self.instance.primary_node,
|
3458 |
] |
3459 |
if self.op.remote_node is not None: |
3460 |
nl.append(self.op.remote_node)
|
3461 |
return env, nl, nl
|
3462 |
|
3463 |
def CheckPrereq(self): |
3464 |
"""Check prerequisites.
|
3465 |
|
3466 |
This checks that the instance is in the cluster.
|
3467 |
|
3468 |
"""
|
3469 |
if not hasattr(self.op, "remote_node"): |
3470 |
self.op.remote_node = None |
3471 |
|
3472 |
instance = self.cfg.GetInstanceInfo(
|
3473 |
self.cfg.ExpandInstanceName(self.op.instance_name)) |
3474 |
if instance is None: |
3475 |
raise errors.OpPrereqError("Instance '%s' not known" % |
3476 |
self.op.instance_name)
|
3477 |
self.instance = instance
|
3478 |
self.op.instance_name = instance.name
|
3479 |
|
3480 |
if instance.disk_template not in constants.DTS_NET_MIRROR: |
3481 |
raise errors.OpPrereqError("Instance's disk layout is not" |
3482 |
" network mirrored.")
|
3483 |
|
3484 |
if len(instance.secondary_nodes) != 1: |
3485 |
raise errors.OpPrereqError("The instance has a strange layout," |
3486 |
" expected one secondary but found %d" %
|
3487 |
len(instance.secondary_nodes))
|
3488 |
|
3489 |
self.sec_node = instance.secondary_nodes[0] |
3490 |
|
3491 |
ia_name = getattr(self.op, "iallocator", None) |
3492 |
if ia_name is not None: |
3493 |
if self.op.remote_node is not None: |
3494 |
raise errors.OpPrereqError("Give either the iallocator or the new" |
3495 |
" secondary, not both")
|
3496 |
self.op.remote_node = self._RunAllocator() |
3497 |
|
3498 |
remote_node = self.op.remote_node
|
3499 |
if remote_node is not None: |
3500 |
remote_node = self.cfg.ExpandNodeName(remote_node)
|
3501 |
if remote_node is None: |
3502 |
raise errors.OpPrereqError("Node '%s' not known" % |
3503 |
self.op.remote_node)
|
3504 |
self.remote_node_info = self.cfg.GetNodeInfo(remote_node) |
3505 |
else:
|
3506 |
self.remote_node_info = None |
3507 |
if remote_node == instance.primary_node:
|
3508 |
raise errors.OpPrereqError("The specified node is the primary node of" |
3509 |
" the instance.")
|
3510 |
elif remote_node == self.sec_node: |
3511 |
if self.op.mode == constants.REPLACE_DISK_SEC: |
3512 |
# this is for DRBD8, where we can't execute the same mode of
|
3513 |
# replacement as for drbd7 (no different port allocated)
|
3514 |
raise errors.OpPrereqError("Same secondary given, cannot execute" |
3515 |
" replacement")
|
3516 |
if instance.disk_template == constants.DT_DRBD8:
|
3517 |
if (self.op.mode == constants.REPLACE_DISK_ALL and |
3518 |
remote_node is not None): |
3519 |
# switch to replace secondary mode
|
3520 |
self.op.mode = constants.REPLACE_DISK_SEC
|
3521 |
|
3522 |
if self.op.mode == constants.REPLACE_DISK_ALL: |
3523 |
raise errors.OpPrereqError("Template 'drbd' only allows primary or" |
3524 |
" secondary disk replacement, not"
|
3525 |
" both at once")
|
3526 |
elif self.op.mode == constants.REPLACE_DISK_PRI: |
3527 |
if remote_node is not None: |
3528 |
raise errors.OpPrereqError("Template 'drbd' does not allow changing" |
3529 |
" the secondary while doing a primary"
|
3530 |
" node disk replacement")
|
3531 |
self.tgt_node = instance.primary_node
|
3532 |
self.oth_node = instance.secondary_nodes[0] |
3533 |
elif self.op.mode == constants.REPLACE_DISK_SEC: |
3534 |
self.new_node = remote_node # this can be None, in which case |
3535 |
# we don't change the secondary
|
3536 |
self.tgt_node = instance.secondary_nodes[0] |
3537 |
self.oth_node = instance.primary_node
|
3538 |
else:
|
3539 |
raise errors.ProgrammerError("Unhandled disk replace mode") |
3540 |
|
3541 |
for name in self.op.disks: |
3542 |
if instance.FindDisk(name) is None: |
3543 |
raise errors.OpPrereqError("Disk '%s' not found for instance '%s'" % |
3544 |
(name, instance.name)) |
3545 |
self.op.remote_node = remote_node
|
3546 |
|
3547 |
def _ExecD8DiskOnly(self, feedback_fn): |
3548 |
"""Replace a disk on the primary or secondary for dbrd8.
|
3549 |
|
3550 |
The algorithm for replace is quite complicated:
|
3551 |
- for each disk to be replaced:
|
3552 |
- create new LVs on the target node with unique names
|
3553 |
- detach old LVs from the drbd device
|
3554 |
- rename old LVs to name_replaced.<time_t>
|
3555 |
- rename new LVs to old LVs
|
3556 |
- attach the new LVs (with the old names now) to the drbd device
|
3557 |
- wait for sync across all devices
|
3558 |
- for each modified disk:
|
3559 |
- remove old LVs (which have the name name_replaces.<time_t>)
|
3560 |
|
3561 |
Failures are not very well handled.
|
3562 |
|
3563 |
"""
|
3564 |
steps_total = 6
|
3565 |
warning, info = (self.proc.LogWarning, self.proc.LogInfo) |
3566 |
instance = self.instance
|
3567 |
iv_names = {} |
3568 |
vgname = self.cfg.GetVGName()
|
3569 |
# start of work
|
3570 |
cfg = self.cfg
|
3571 |
tgt_node = self.tgt_node
|
3572 |
oth_node = self.oth_node
|
3573 |
|
3574 |
# Step: check device activation
|
3575 |
self.proc.LogStep(1, steps_total, "check device existence") |
3576 |
info("checking volume groups")
|
3577 |
my_vg = cfg.GetVGName() |
3578 |
results = rpc.call_vg_list([oth_node, tgt_node]) |
3579 |
if not results: |
3580 |
raise errors.OpExecError("Can't list volume groups on the nodes") |
3581 |
for node in oth_node, tgt_node: |
3582 |
res = results.get(node, False)
|
3583 |
if not res or my_vg not in res: |
3584 |
raise errors.OpExecError("Volume group '%s' not found on %s" % |
3585 |
(my_vg, node)) |
3586 |
for dev in instance.disks: |
3587 |
if not dev.iv_name in self.op.disks: |
3588 |
continue
|
3589 |
for node in tgt_node, oth_node: |
3590 |
info("checking %s on %s" % (dev.iv_name, node))
|
3591 |
cfg.SetDiskID(dev, node) |
3592 |
if not rpc.call_blockdev_find(node, dev): |
3593 |
raise errors.OpExecError("Can't find device %s on node %s" % |
3594 |
(dev.iv_name, node)) |
3595 |
|
3596 |
# Step: check other node consistency
|
3597 |
self.proc.LogStep(2, steps_total, "check peer consistency") |
3598 |
for dev in instance.disks: |
3599 |
if not dev.iv_name in self.op.disks: |
3600 |
continue
|
3601 |
info("checking %s consistency on %s" % (dev.iv_name, oth_node))
|
3602 |
if not _CheckDiskConsistency(self.cfg, dev, oth_node, |
3603 |
oth_node==instance.primary_node): |
3604 |
raise errors.OpExecError("Peer node (%s) has degraded storage, unsafe" |
3605 |
" to replace disks on this node (%s)" %
|
3606 |
(oth_node, tgt_node)) |
3607 |
|
3608 |
# Step: create new storage
|
3609 |
self.proc.LogStep(3, steps_total, "allocate new storage") |
3610 |
for dev in instance.disks: |
3611 |
if not dev.iv_name in self.op.disks: |
3612 |
continue
|
3613 |
size = dev.size |
3614 |
cfg.SetDiskID(dev, tgt_node) |
3615 |
lv_names = [".%s_%s" % (dev.iv_name, suf) for suf in ["data", "meta"]] |
3616 |
names = _GenerateUniqueNames(cfg, lv_names) |
3617 |
lv_data = objects.Disk(dev_type=constants.LD_LV, size=size, |
3618 |
logical_id=(vgname, names[0]))
|
3619 |
lv_meta = objects.Disk(dev_type=constants.LD_LV, size=128,
|
3620 |
logical_id=(vgname, names[1]))
|
3621 |
new_lvs = [lv_data, lv_meta] |
3622 |
old_lvs = dev.children |
3623 |
iv_names[dev.iv_name] = (dev, old_lvs, new_lvs) |
3624 |
info("creating new local storage on %s for %s" %
|
3625 |
(tgt_node, dev.iv_name)) |
3626 |
# since we *always* want to create this LV, we use the
|
3627 |
# _Create...OnPrimary (which forces the creation), even if we
|
3628 |
# are talking about the secondary node
|
3629 |
for new_lv in new_lvs: |
3630 |
if not _CreateBlockDevOnPrimary(cfg, tgt_node, instance, new_lv, |
3631 |
_GetInstanceInfoText(instance)): |
3632 |
raise errors.OpExecError("Failed to create new LV named '%s' on" |
3633 |
" node '%s'" %
|
3634 |
(new_lv.logical_id[1], tgt_node))
|
3635 |
|
3636 |
# Step: for each lv, detach+rename*2+attach
|
3637 |
self.proc.LogStep(4, steps_total, "change drbd configuration") |
3638 |
for dev, old_lvs, new_lvs in iv_names.itervalues(): |
3639 |
info("detaching %s drbd from local storage" % dev.iv_name)
|
3640 |
if not rpc.call_blockdev_removechildren(tgt_node, dev, old_lvs): |
3641 |
raise errors.OpExecError("Can't detach drbd from local storage on node" |
3642 |
" %s for device %s" % (tgt_node, dev.iv_name))
|
3643 |
#dev.children = []
|
3644 |
#cfg.Update(instance)
|
3645 |
|
3646 |
# ok, we created the new LVs, so now we know we have the needed
|
3647 |
# storage; as such, we proceed on the target node to rename
|
3648 |
# old_lv to _old, and new_lv to old_lv; note that we rename LVs
|
3649 |
# using the assumption that logical_id == physical_id (which in
|
3650 |
# turn is the unique_id on that node)
|
3651 |
|
3652 |
# FIXME(iustin): use a better name for the replaced LVs
|
3653 |
temp_suffix = int(time.time())
|
3654 |
ren_fn = lambda d, suff: (d.physical_id[0], |
3655 |
d.physical_id[1] + "_replaced-%s" % suff) |
3656 |
# build the rename list based on what LVs exist on the node
|
3657 |
rlist = [] |
3658 |
for to_ren in old_lvs: |
3659 |
find_res = rpc.call_blockdev_find(tgt_node, to_ren) |
3660 |
if find_res is not None: # device exists |
3661 |
rlist.append((to_ren, ren_fn(to_ren, temp_suffix))) |
3662 |
|
3663 |
info("renaming the old LVs on the target node")
|
3664 |
if not rpc.call_blockdev_rename(tgt_node, rlist): |
3665 |
raise errors.OpExecError("Can't rename old LVs on node %s" % tgt_node) |
3666 |
# now we rename the new LVs to the old LVs
|
3667 |
info("renaming the new LVs on the target node")
|
3668 |
rlist = [(new, old.physical_id) for old, new in zip(old_lvs, new_lvs)] |
3669 |
if not rpc.call_blockdev_rename(tgt_node, rlist): |
3670 |
raise errors.OpExecError("Can't rename new LVs on node %s" % tgt_node) |
3671 |
|
3672 |
for old, new in zip(old_lvs, new_lvs): |
3673 |
new.logical_id = old.logical_id |
3674 |
cfg.SetDiskID(new, tgt_node) |
3675 |
|
3676 |
for disk in old_lvs: |
3677 |
disk.logical_id = ren_fn(disk, temp_suffix) |
3678 |
cfg.SetDiskID(disk, tgt_node) |
3679 |
|
3680 |
# now that the new lvs have the old name, we can add them to the device
|
3681 |
info("adding new mirror component on %s" % tgt_node)
|
3682 |
if not rpc.call_blockdev_addchildren(tgt_node, dev, new_lvs): |
3683 |
for new_lv in new_lvs: |
3684 |
if not rpc.call_blockdev_remove(tgt_node, new_lv): |
3685 |
warning("Can't rollback device %s", hint="manually cleanup unused" |
3686 |
" logical volumes")
|
3687 |
raise errors.OpExecError("Can't add local storage to drbd") |
3688 |
|
3689 |
dev.children = new_lvs |
3690 |
cfg.Update(instance) |
3691 |
|
3692 |
# Step: wait for sync
|
3693 |
|
3694 |
# this can fail as the old devices are degraded and _WaitForSync
|
3695 |
# does a combined result over all disks, so we don't check its
|
3696 |
# return value
|
3697 |
self.proc.LogStep(5, steps_total, "sync devices") |
3698 |
_WaitForSync(cfg, instance, self.proc, unlock=True) |
3699 |
|
3700 |
# so check manually all the devices
|
3701 |
for name, (dev, old_lvs, new_lvs) in iv_names.iteritems(): |
3702 |
cfg.SetDiskID(dev, instance.primary_node) |
3703 |
is_degr = rpc.call_blockdev_find(instance.primary_node, dev)[5]
|
3704 |
if is_degr:
|
3705 |
raise errors.OpExecError("DRBD device %s is degraded!" % name) |
3706 |
|
3707 |
# Step: remove old storage
|
3708 |
self.proc.LogStep(6, steps_total, "removing old storage") |
3709 |
for name, (dev, old_lvs, new_lvs) in iv_names.iteritems(): |
3710 |
info("remove logical volumes for %s" % name)
|
3711 |
for lv in old_lvs: |
3712 |
cfg.SetDiskID(lv, tgt_node) |
3713 |
if not rpc.call_blockdev_remove(tgt_node, lv): |
3714 |
warning("Can't remove old LV", hint="manually remove unused LVs") |
3715 |
continue
|
3716 |
|
3717 |
def _ExecD8Secondary(self, feedback_fn): |
3718 |
"""Replace the secondary node for drbd8.
|
3719 |
|
3720 |
The algorithm for replace is quite complicated:
|
3721 |
- for all disks of the instance:
|
3722 |
- create new LVs on the new node with same names
|
3723 |
- shutdown the drbd device on the old secondary
|
3724 |
- disconnect the drbd network on the primary
|
3725 |
- create the drbd device on the new secondary
|
3726 |
- network attach the drbd on the primary, using an artifice:
|
3727 |
the drbd code for Attach() will connect to the network if it
|
3728 |
finds a device which is connected to the good local disks but
|
3729 |
not network enabled
|
3730 |
- wait for sync across all devices
|
3731 |
- remove all disks from the old secondary
|
3732 |
|
3733 |
Failures are not very well handled.
|
3734 |
|
3735 |
"""
|
3736 |
steps_total = 6
|
3737 |
warning, info = (self.proc.LogWarning, self.proc.LogInfo) |
3738 |
instance = self.instance
|
3739 |
iv_names = {} |
3740 |
vgname = self.cfg.GetVGName()
|
3741 |
# start of work
|
3742 |
cfg = self.cfg
|
3743 |
old_node = self.tgt_node
|
3744 |
new_node = self.new_node
|
3745 |
pri_node = instance.primary_node |
3746 |
|
3747 |
# Step: check device activation
|
3748 |
self.proc.LogStep(1, steps_total, "check device existence") |
3749 |
info("checking volume groups")
|
3750 |
my_vg = cfg.GetVGName() |
3751 |
results = rpc.call_vg_list([pri_node, new_node]) |
3752 |
if not results: |
3753 |
raise errors.OpExecError("Can't list volume groups on the nodes") |
3754 |
for node in pri_node, new_node: |
3755 |
res = results.get(node, False)
|
3756 |
if not res or my_vg not in res: |
3757 |
raise errors.OpExecError("Volume group '%s' not found on %s" % |
3758 |
(my_vg, node)) |
3759 |
for dev in instance.disks: |
3760 |
if not dev.iv_name in self.op.disks: |
3761 |
continue
|
3762 |
info("checking %s on %s" % (dev.iv_name, pri_node))
|
3763 |
cfg.SetDiskID(dev, pri_node) |
3764 |
if not rpc.call_blockdev_find(pri_node, dev): |
3765 |
raise errors.OpExecError("Can't find device %s on node %s" % |
3766 |
(dev.iv_name, pri_node)) |
3767 |
|
3768 |
# Step: check other node consistency
|
3769 |
self.proc.LogStep(2, steps_total, "check peer consistency") |
3770 |
for dev in instance.disks: |
3771 |
if not dev.iv_name in self.op.disks: |
3772 |
continue
|
3773 |
info("checking %s consistency on %s" % (dev.iv_name, pri_node))
|
3774 |
if not _CheckDiskConsistency(self.cfg, dev, pri_node, True, ldisk=True): |
3775 |
raise errors.OpExecError("Primary node (%s) has degraded storage," |
3776 |
" unsafe to replace the secondary" %
|
3777 |
pri_node) |
3778 |
|
3779 |
# Step: create new storage
|
3780 |
self.proc.LogStep(3, steps_total, "allocate new storage") |
3781 |
for dev in instance.disks: |
3782 |
size = dev.size |
3783 |
info("adding new local storage on %s for %s" % (new_node, dev.iv_name))
|
3784 |
# since we *always* want to create this LV, we use the
|
3785 |
# _Create...OnPrimary (which forces the creation), even if we
|
3786 |
# are talking about the secondary node
|
3787 |
for new_lv in dev.children: |
3788 |
if not _CreateBlockDevOnPrimary(cfg, new_node, instance, new_lv, |
3789 |
_GetInstanceInfoText(instance)): |
3790 |
raise errors.OpExecError("Failed to create new LV named '%s' on" |
3791 |
" node '%s'" %
|
3792 |
(new_lv.logical_id[1], new_node))
|
3793 |
|
3794 |
iv_names[dev.iv_name] = (dev, dev.children) |
3795 |
|
3796 |
self.proc.LogStep(4, steps_total, "changing drbd configuration") |
3797 |
for dev in instance.disks: |
3798 |
size = dev.size |
3799 |
info("activating a new drbd on %s for %s" % (new_node, dev.iv_name))
|
3800 |
# create new devices on new_node
|
3801 |
new_drbd = objects.Disk(dev_type=constants.LD_DRBD8, |
3802 |
logical_id=(pri_node, new_node, |
3803 |
dev.logical_id[2]),
|
3804 |
children=dev.children) |
3805 |
if not _CreateBlockDevOnSecondary(cfg, new_node, instance, |
3806 |
new_drbd, False,
|
3807 |
_GetInstanceInfoText(instance)): |
3808 |
raise errors.OpExecError("Failed to create new DRBD on" |
3809 |
" node '%s'" % new_node)
|
3810 |
|
3811 |
for dev in instance.disks: |
3812 |
# we have new devices, shutdown the drbd on the old secondary
|
3813 |
info("shutting down drbd for %s on old node" % dev.iv_name)
|
3814 |
cfg.SetDiskID(dev, old_node) |
3815 |
if not rpc.call_blockdev_shutdown(old_node, dev): |
3816 |
warning("Failed to shutdown drbd for %s on old node" % dev.iv_name,
|
3817 |
hint="Please cleanup this device manually as soon as possible")
|
3818 |
|
3819 |
info("detaching primary drbds from the network (=> standalone)")
|
3820 |
done = 0
|
3821 |
for dev in instance.disks: |
3822 |
cfg.SetDiskID(dev, pri_node) |
3823 |
# set the physical (unique in bdev terms) id to None, meaning
|
3824 |
# detach from network
|
3825 |
dev.physical_id = (None,) * len(dev.physical_id) |
3826 |
# and 'find' the device, which will 'fix' it to match the
|
3827 |
# standalone state
|
3828 |
if rpc.call_blockdev_find(pri_node, dev):
|
3829 |
done += 1
|
3830 |
else:
|
3831 |
warning("Failed to detach drbd %s from network, unusual case" %
|
3832 |
dev.iv_name) |
3833 |
|
3834 |
if not done: |
3835 |
# no detaches succeeded (very unlikely)
|
3836 |
raise errors.OpExecError("Can't detach at least one DRBD from old node") |
3837 |
|
3838 |
# if we managed to detach at least one, we update all the disks of
|
3839 |
# the instance to point to the new secondary
|
3840 |
info("updating instance configuration")
|
3841 |
for dev in instance.disks: |
3842 |
dev.logical_id = (pri_node, new_node) + dev.logical_id[2:]
|
3843 |
cfg.SetDiskID(dev, pri_node) |
3844 |
cfg.Update(instance) |
3845 |
|
3846 |
# and now perform the drbd attach
|
3847 |
info("attaching primary drbds to new secondary (standalone => connected)")
|
3848 |
failures = [] |
3849 |
for dev in instance.disks: |
3850 |
info("attaching primary drbd for %s to new secondary node" % dev.iv_name)
|
3851 |
# since the attach is smart, it's enough to 'find' the device,
|
3852 |
# it will automatically activate the network, if the physical_id
|
3853 |
# is correct
|
3854 |
cfg.SetDiskID(dev, pri_node) |
3855 |
if not rpc.call_blockdev_find(pri_node, dev): |
3856 |
warning("can't attach drbd %s to new secondary!" % dev.iv_name,
|
3857 |
"please do a gnt-instance info to see the status of disks")
|
3858 |
|
3859 |
# this can fail as the old devices are degraded and _WaitForSync
|
3860 |
# does a combined result over all disks, so we don't check its
|
3861 |
# return value
|
3862 |
self.proc.LogStep(5, steps_total, "sync devices") |
3863 |
_WaitForSync(cfg, instance, self.proc, unlock=True) |
3864 |
|
3865 |
# so check manually all the devices
|
3866 |
for name, (dev, old_lvs) in iv_names.iteritems(): |
3867 |
cfg.SetDiskID(dev, pri_node) |
3868 |
is_degr = rpc.call_blockdev_find(pri_node, dev)[5]
|
3869 |
if is_degr:
|
3870 |
raise errors.OpExecError("DRBD device %s is degraded!" % name) |
3871 |
|
3872 |
self.proc.LogStep(6, steps_total, "removing old storage") |
3873 |
for name, (dev, old_lvs) in iv_names.iteritems(): |
3874 |
info("remove logical volumes for %s" % name)
|
3875 |
for lv in old_lvs: |
3876 |
cfg.SetDiskID(lv, old_node) |
3877 |
if not rpc.call_blockdev_remove(old_node, lv): |
3878 |
warning("Can't remove LV on old secondary",
|
3879 |
hint="Cleanup stale volumes by hand")
|
3880 |
|
3881 |
def Exec(self, feedback_fn): |
3882 |
"""Execute disk replacement.
|
3883 |
|
3884 |
This dispatches the disk replacement to the appropriate handler.
|
3885 |
|
3886 |
"""
|
3887 |
instance = self.instance
|
3888 |
|
3889 |
# Activate the instance disks if we're replacing them on a down instance
|
3890 |
if instance.status == "down": |
3891 |
op = opcodes.OpActivateInstanceDisks(instance_name=instance.name) |
3892 |
self.proc.ChainOpCode(op)
|
3893 |
|
3894 |
if instance.disk_template == constants.DT_DRBD8:
|
3895 |
if self.op.remote_node is None: |
3896 |
fn = self._ExecD8DiskOnly
|
3897 |
else:
|
3898 |
fn = self._ExecD8Secondary
|
3899 |
else:
|
3900 |
raise errors.ProgrammerError("Unhandled disk replacement case") |
3901 |
|
3902 |
ret = fn(feedback_fn) |
3903 |
|
3904 |
# Deactivate the instance disks if we're replacing them on a down instance
|
3905 |
if instance.status == "down": |
3906 |
op = opcodes.OpDeactivateInstanceDisks(instance_name=instance.name) |
3907 |
self.proc.ChainOpCode(op)
|
3908 |
|
3909 |
return ret
|
3910 |
|
3911 |
|
3912 |
class LUGrowDisk(LogicalUnit): |
3913 |
"""Grow a disk of an instance.
|
3914 |
|
3915 |
"""
|
3916 |
HPATH = "disk-grow"
|
3917 |
HTYPE = constants.HTYPE_INSTANCE |
3918 |
_OP_REQP = ["instance_name", "disk", "amount"] |
3919 |
|
3920 |
def BuildHooksEnv(self): |
3921 |
"""Build hooks env.
|
3922 |
|
3923 |
This runs on the master, the primary and all the secondaries.
|
3924 |
|
3925 |
"""
|
3926 |
env = { |
3927 |
"DISK": self.op.disk, |
3928 |
"AMOUNT": self.op.amount, |
3929 |
} |
3930 |
env.update(_BuildInstanceHookEnvByObject(self.instance))
|
3931 |
nl = [ |
3932 |
self.sstore.GetMasterNode(),
|
3933 |
self.instance.primary_node,
|
3934 |
] |
3935 |
return env, nl, nl
|
3936 |
|
3937 |
def CheckPrereq(self): |
3938 |
"""Check prerequisites.
|
3939 |
|
3940 |
This checks that the instance is in the cluster.
|
3941 |
|
3942 |
"""
|
3943 |
instance = self.cfg.GetInstanceInfo(
|
3944 |
self.cfg.ExpandInstanceName(self.op.instance_name)) |
3945 |
if instance is None: |
3946 |
raise errors.OpPrereqError("Instance '%s' not known" % |
3947 |
self.op.instance_name)
|
3948 |
self.instance = instance
|
3949 |
self.op.instance_name = instance.name
|
3950 |
|
3951 |
if instance.disk_template not in (constants.DT_PLAIN, constants.DT_DRBD8): |
3952 |
raise errors.OpPrereqError("Instance's disk layout does not support" |
3953 |
" growing.")
|
3954 |
|
3955 |
if instance.FindDisk(self.op.disk) is None: |
3956 |
raise errors.OpPrereqError("Disk '%s' not found for instance '%s'" % |
3957 |
(self.op.disk, instance.name))
|
3958 |
|
3959 |
nodenames = [instance.primary_node] + list(instance.secondary_nodes)
|
3960 |
nodeinfo = rpc.call_node_info(nodenames, self.cfg.GetVGName())
|
3961 |
for node in nodenames: |
3962 |
info = nodeinfo.get(node, None)
|
3963 |
if not info: |
3964 |
raise errors.OpPrereqError("Cannot get current information" |
3965 |
" from node '%s'" % node)
|
3966 |
vg_free = info.get('vg_free', None) |
3967 |
if not isinstance(vg_free, int): |
3968 |
raise errors.OpPrereqError("Can't compute free disk space on" |
3969 |
" node %s" % node)
|
3970 |
if self.op.amount > info['vg_free']: |
3971 |
raise errors.OpPrereqError("Not enough disk space on target node %s:" |
3972 |
" %d MiB available, %d MiB required" %
|
3973 |
(node, info['vg_free'], self.op.amount)) |
3974 |
|
3975 |
def Exec(self, feedback_fn): |
3976 |
"""Execute disk grow.
|
3977 |
|
3978 |
"""
|
3979 |
instance = self.instance
|
3980 |
disk = instance.FindDisk(self.op.disk)
|
3981 |
for node in (instance.secondary_nodes + (instance.primary_node,)): |
3982 |
self.cfg.SetDiskID(disk, node)
|
3983 |
result = rpc.call_blockdev_grow(node, disk, self.op.amount)
|
3984 |
if not result or not isinstance(result, tuple) or len(result) != 2: |
3985 |
raise errors.OpExecError("grow request failed to node %s" % node) |
3986 |
elif not result[0]: |
3987 |
raise errors.OpExecError("grow request failed to node %s: %s" % |
3988 |
(node, result[1]))
|
3989 |
disk.RecordGrow(self.op.amount)
|
3990 |
self.cfg.Update(instance)
|
3991 |
return
|
3992 |
|
3993 |
|
3994 |
class LUQueryInstanceData(NoHooksLU): |
3995 |
"""Query runtime instance data.
|
3996 |
|
3997 |
"""
|
3998 |
_OP_REQP = ["instances"]
|
3999 |
|
4000 |
def CheckPrereq(self): |
4001 |
"""Check prerequisites.
|
4002 |
|
4003 |
This only checks the optional instance list against the existing names.
|
4004 |
|
4005 |
"""
|
4006 |
if not isinstance(self.op.instances, list): |
4007 |
raise errors.OpPrereqError("Invalid argument type 'instances'") |
4008 |
if self.op.instances: |
4009 |
self.wanted_instances = []
|
4010 |
names = self.op.instances
|
4011 |
for name in names: |
4012 |
instance = self.cfg.GetInstanceInfo(self.cfg.ExpandInstanceName(name)) |
4013 |
if instance is None: |
4014 |
raise errors.OpPrereqError("No such instance name '%s'" % name) |
4015 |
self.wanted_instances.append(instance)
|
4016 |
else:
|
4017 |
self.wanted_instances = [self.cfg.GetInstanceInfo(name) for name |
4018 |
in self.cfg.GetInstanceList()] |
4019 |
return
|
4020 |
|
4021 |
|
4022 |
def _ComputeDiskStatus(self, instance, snode, dev): |
4023 |
"""Compute block device status.
|
4024 |
|
4025 |
"""
|
4026 |
self.cfg.SetDiskID(dev, instance.primary_node)
|
4027 |
dev_pstatus = rpc.call_blockdev_find(instance.primary_node, dev) |
4028 |
if dev.dev_type in constants.LDS_DRBD: |
4029 |
# we change the snode then (otherwise we use the one passed in)
|
4030 |
if dev.logical_id[0] == instance.primary_node: |
4031 |
snode = dev.logical_id[1]
|
4032 |
else:
|
4033 |
snode = dev.logical_id[0]
|
4034 |
|
4035 |
if snode:
|
4036 |
self.cfg.SetDiskID(dev, snode)
|
4037 |
dev_sstatus = rpc.call_blockdev_find(snode, dev) |
4038 |
else:
|
4039 |
dev_sstatus = None
|
4040 |
|
4041 |
if dev.children:
|
4042 |
dev_children = [self._ComputeDiskStatus(instance, snode, child)
|
4043 |
for child in dev.children] |
4044 |
else:
|
4045 |
dev_children = [] |
4046 |
|
4047 |
data = { |
4048 |
"iv_name": dev.iv_name,
|
4049 |
"dev_type": dev.dev_type,
|
4050 |
"logical_id": dev.logical_id,
|
4051 |
"physical_id": dev.physical_id,
|
4052 |
"pstatus": dev_pstatus,
|
4053 |
"sstatus": dev_sstatus,
|
4054 |
"children": dev_children,
|
4055 |
} |
4056 |
|
4057 |
return data
|
4058 |
|
4059 |
def Exec(self, feedback_fn): |
4060 |
"""Gather and return data"""
|
4061 |
result = {} |
4062 |
for instance in self.wanted_instances: |
4063 |
remote_info = rpc.call_instance_info(instance.primary_node, |
4064 |
instance.name) |
4065 |
if remote_info and "state" in remote_info: |
4066 |
remote_state = "up"
|
4067 |
else:
|
4068 |
remote_state = "down"
|
4069 |
if instance.status == "down": |
4070 |
config_state = "down"
|
4071 |
else:
|
4072 |
config_state = "up"
|
4073 |
|
4074 |
disks = [self._ComputeDiskStatus(instance, None, device) |
4075 |
for device in instance.disks] |
4076 |
|
4077 |
idict = { |
4078 |
"name": instance.name,
|
4079 |
"config_state": config_state,
|
4080 |
"run_state": remote_state,
|
4081 |
"pnode": instance.primary_node,
|
4082 |
"snodes": instance.secondary_nodes,
|
4083 |
"os": instance.os,
|
4084 |
"memory": instance.memory,
|
4085 |
"nics": [(nic.mac, nic.ip, nic.bridge) for nic in instance.nics], |
4086 |
"disks": disks,
|
4087 |
"vcpus": instance.vcpus,
|
4088 |
} |
4089 |
|
4090 |
htkind = self.sstore.GetHypervisorType()
|
4091 |
if htkind == constants.HT_XEN_PVM30:
|
4092 |
idict["kernel_path"] = instance.kernel_path
|
4093 |
idict["initrd_path"] = instance.initrd_path
|
4094 |
|
4095 |
if htkind == constants.HT_XEN_HVM31:
|
4096 |
idict["hvm_boot_order"] = instance.hvm_boot_order
|
4097 |
idict["hvm_acpi"] = instance.hvm_acpi
|
4098 |
idict["hvm_pae"] = instance.hvm_pae
|
4099 |
idict["hvm_cdrom_image_path"] = instance.hvm_cdrom_image_path
|
4100 |
|
4101 |
if htkind in constants.HTS_REQ_PORT: |
4102 |
idict["vnc_bind_address"] = instance.vnc_bind_address
|
4103 |
idict["network_port"] = instance.network_port
|
4104 |
|
4105 |
result[instance.name] = idict |
4106 |
|
4107 |
return result
|
4108 |
|
4109 |
|
4110 |
class LUSetInstanceParams(LogicalUnit): |
4111 |
"""Modifies an instances's parameters.
|
4112 |
|
4113 |
"""
|
4114 |
HPATH = "instance-modify"
|
4115 |
HTYPE = constants.HTYPE_INSTANCE |
4116 |
_OP_REQP = ["instance_name"]
|
4117 |
REQ_BGL = False
|
4118 |
|
4119 |
def ExpandNames(self): |
4120 |
self._ExpandAndLockInstance()
|
4121 |
|
4122 |
def BuildHooksEnv(self): |
4123 |
"""Build hooks env.
|
4124 |
|
4125 |
This runs on the master, primary and secondaries.
|
4126 |
|
4127 |
"""
|
4128 |
args = dict()
|
4129 |
if self.mem: |
4130 |
args['memory'] = self.mem |
4131 |
if self.vcpus: |
4132 |
args['vcpus'] = self.vcpus |
4133 |
if self.do_ip or self.do_bridge or self.mac: |
4134 |
if self.do_ip: |
4135 |
ip = self.ip
|
4136 |
else:
|
4137 |
ip = self.instance.nics[0].ip |
4138 |
if self.bridge: |
4139 |
bridge = self.bridge
|
4140 |
else:
|
4141 |
bridge = self.instance.nics[0].bridge |
4142 |
if self.mac: |
4143 |
mac = self.mac
|
4144 |
else:
|
4145 |
mac = self.instance.nics[0].mac |
4146 |
args['nics'] = [(ip, bridge, mac)]
|
4147 |
env = _BuildInstanceHookEnvByObject(self.instance, override=args)
|
4148 |
nl = [self.sstore.GetMasterNode(),
|
4149 |
self.instance.primary_node] + list(self.instance.secondary_nodes) |
4150 |
return env, nl, nl
|
4151 |
|
4152 |
def CheckPrereq(self): |
4153 |
"""Check prerequisites.
|
4154 |
|
4155 |
This only checks the instance list against the existing names.
|
4156 |
|
4157 |
"""
|
4158 |
# FIXME: all the parameters could be checked before, in ExpandNames, or in
|
4159 |
# a separate CheckArguments function, if we implement one, so the operation
|
4160 |
# can be aborted without waiting for any lock, should it have an error...
|
4161 |
self.mem = getattr(self.op, "mem", None) |
4162 |
self.vcpus = getattr(self.op, "vcpus", None) |
4163 |
self.ip = getattr(self.op, "ip", None) |
4164 |
self.mac = getattr(self.op, "mac", None) |
4165 |
self.bridge = getattr(self.op, "bridge", None) |
4166 |
self.kernel_path = getattr(self.op, "kernel_path", None) |
4167 |
self.initrd_path = getattr(self.op, "initrd_path", None) |
4168 |
self.hvm_boot_order = getattr(self.op, "hvm_boot_order", None) |
4169 |
self.hvm_acpi = getattr(self.op, "hvm_acpi", None) |
4170 |
self.hvm_pae = getattr(self.op, "hvm_pae", None) |
4171 |
self.hvm_cdrom_image_path = getattr(self.op, "hvm_cdrom_image_path", None) |
4172 |
self.vnc_bind_address = getattr(self.op, "vnc_bind_address", None) |
4173 |
all_parms = [self.mem, self.vcpus, self.ip, self.bridge, self.mac, |
4174 |
self.kernel_path, self.initrd_path, self.hvm_boot_order, |
4175 |
self.hvm_acpi, self.hvm_pae, self.hvm_cdrom_image_path, |
4176 |
self.vnc_bind_address]
|
4177 |
if all_parms.count(None) == len(all_parms): |
4178 |
raise errors.OpPrereqError("No changes submitted") |
4179 |
if self.mem is not None: |
4180 |
try:
|
4181 |
self.mem = int(self.mem) |
4182 |
except ValueError, err: |
4183 |
raise errors.OpPrereqError("Invalid memory size: %s" % str(err)) |
4184 |
if self.vcpus is not None: |
4185 |
try:
|
4186 |
self.vcpus = int(self.vcpus) |
4187 |
except ValueError, err: |
4188 |
raise errors.OpPrereqError("Invalid vcpus number: %s" % str(err)) |
4189 |
if self.ip is not None: |
4190 |
self.do_ip = True |
4191 |
if self.ip.lower() == "none": |
4192 |
self.ip = None |
4193 |
else:
|
4194 |
if not utils.IsValidIP(self.ip): |
4195 |
raise errors.OpPrereqError("Invalid IP address '%s'." % self.ip) |
4196 |
else:
|
4197 |
self.do_ip = False |
4198 |
self.do_bridge = (self.bridge is not None) |
4199 |
if self.mac is not None: |
4200 |
if self.cfg.IsMacInUse(self.mac): |
4201 |
raise errors.OpPrereqError('MAC address %s already in use in cluster' % |
4202 |
self.mac)
|
4203 |
if not utils.IsValidMac(self.mac): |
4204 |
raise errors.OpPrereqError('Invalid MAC address %s' % self.mac) |
4205 |
|
4206 |
if self.kernel_path is not None: |
4207 |
self.do_kernel_path = True |
4208 |
if self.kernel_path == constants.VALUE_NONE: |
4209 |
raise errors.OpPrereqError("Can't set instance to no kernel") |
4210 |
|
4211 |
if self.kernel_path != constants.VALUE_DEFAULT: |
4212 |
if not os.path.isabs(self.kernel_path): |
4213 |
raise errors.OpPrereqError("The kernel path must be an absolute" |
4214 |
" filename")
|
4215 |
else:
|
4216 |
self.do_kernel_path = False |
4217 |
|
4218 |
if self.initrd_path is not None: |
4219 |
self.do_initrd_path = True |
4220 |
if self.initrd_path not in (constants.VALUE_NONE, |
4221 |
constants.VALUE_DEFAULT): |
4222 |
if not os.path.isabs(self.initrd_path): |
4223 |
raise errors.OpPrereqError("The initrd path must be an absolute" |
4224 |
" filename")
|
4225 |
else:
|
4226 |
self.do_initrd_path = False |
4227 |
|
4228 |
# boot order verification
|
4229 |
if self.hvm_boot_order is not None: |
4230 |
if self.hvm_boot_order != constants.VALUE_DEFAULT: |
4231 |
if len(self.hvm_boot_order.strip("acdn")) != 0: |
4232 |
raise errors.OpPrereqError("invalid boot order specified," |
4233 |
" must be one or more of [acdn]"
|
4234 |
" or 'default'")
|
4235 |
|
4236 |
# hvm_cdrom_image_path verification
|
4237 |
if self.op.hvm_cdrom_image_path is not None: |
4238 |
if not os.path.isabs(self.op.hvm_cdrom_image_path): |
4239 |
raise errors.OpPrereqError("The path to the HVM CDROM image must" |
4240 |
" be an absolute path or None, not %s" %
|
4241 |
self.op.hvm_cdrom_image_path)
|
4242 |
if not os.path.isfile(self.op.hvm_cdrom_image_path): |
4243 |
raise errors.OpPrereqError("The HVM CDROM image must either be a" |
4244 |
" regular file or a symlink pointing to"
|
4245 |
" an existing regular file, not %s" %
|
4246 |
self.op.hvm_cdrom_image_path)
|
4247 |
|
4248 |
# vnc_bind_address verification
|
4249 |
if self.op.vnc_bind_address is not None: |
4250 |
if not utils.IsValidIP(self.op.vnc_bind_address): |
4251 |
raise errors.OpPrereqError("given VNC bind address '%s' doesn't look" |
4252 |
" like a valid IP address" %
|
4253 |
self.op.vnc_bind_address)
|
4254 |
|
4255 |
self.instance = self.cfg.GetInstanceInfo(self.op.instance_name) |
4256 |
assert self.instance is not None, \ |
4257 |
"Cannot retrieve locked instance %s" % self.op.instance_name |
4258 |
return
|
4259 |
|
4260 |
def Exec(self, feedback_fn): |
4261 |
"""Modifies an instance.
|
4262 |
|
4263 |
All parameters take effect only at the next restart of the instance.
|
4264 |
"""
|
4265 |
result = [] |
4266 |
instance = self.instance
|
4267 |
if self.mem: |
4268 |
instance.memory = self.mem
|
4269 |
result.append(("mem", self.mem)) |
4270 |
if self.vcpus: |
4271 |
instance.vcpus = self.vcpus
|
4272 |
result.append(("vcpus", self.vcpus)) |
4273 |
if self.do_ip: |
4274 |
instance.nics[0].ip = self.ip |
4275 |
result.append(("ip", self.ip)) |
4276 |
if self.bridge: |
4277 |
instance.nics[0].bridge = self.bridge |
4278 |
result.append(("bridge", self.bridge)) |
4279 |
if self.mac: |
4280 |
instance.nics[0].mac = self.mac |
4281 |
result.append(("mac", self.mac)) |
4282 |
if self.do_kernel_path: |
4283 |
instance.kernel_path = self.kernel_path
|
4284 |
result.append(("kernel_path", self.kernel_path)) |
4285 |
if self.do_initrd_path: |
4286 |
instance.initrd_path = self.initrd_path
|
4287 |
result.append(("initrd_path", self.initrd_path)) |
4288 |
if self.hvm_boot_order: |
4289 |
if self.hvm_boot_order == constants.VALUE_DEFAULT: |
4290 |
instance.hvm_boot_order = None
|
4291 |
else:
|
4292 |
instance.hvm_boot_order = self.hvm_boot_order
|
4293 |
result.append(("hvm_boot_order", self.hvm_boot_order)) |
4294 |
if self.hvm_acpi: |
4295 |
instance.hvm_acpi = self.hvm_acpi
|
4296 |
result.append(("hvm_acpi", self.hvm_acpi)) |
4297 |
if self.hvm_pae: |
4298 |
instance.hvm_pae = self.hvm_pae
|
4299 |
result.append(("hvm_pae", self.hvm_pae)) |
4300 |
if self.hvm_cdrom_image_path: |
4301 |
instance.hvm_cdrom_image_path = self.hvm_cdrom_image_path
|
4302 |
result.append(("hvm_cdrom_image_path", self.hvm_cdrom_image_path)) |
4303 |
if self.vnc_bind_address: |
4304 |
instance.vnc_bind_address = self.vnc_bind_address
|
4305 |
result.append(("vnc_bind_address", self.vnc_bind_address)) |
4306 |
|
4307 |
self.cfg.Update(instance)
|
4308 |
|
4309 |
return result
|
4310 |
|
4311 |
|
4312 |
class LUQueryExports(NoHooksLU): |
4313 |
"""Query the exports list
|
4314 |
|
4315 |
"""
|
4316 |
_OP_REQP = [] |
4317 |
|
4318 |
def CheckPrereq(self): |
4319 |
"""Check that the nodelist contains only existing nodes.
|
4320 |
|
4321 |
"""
|
4322 |
self.nodes = _GetWantedNodes(self, getattr(self.op, "nodes", None)) |
4323 |
|
4324 |
def Exec(self, feedback_fn): |
4325 |
"""Compute the list of all the exported system images.
|
4326 |
|
4327 |
Returns:
|
4328 |
a dictionary with the structure node->(export-list)
|
4329 |
where export-list is a list of the instances exported on
|
4330 |
that node.
|
4331 |
|
4332 |
"""
|
4333 |
return rpc.call_export_list(self.nodes) |
4334 |
|
4335 |
|
4336 |
class LUExportInstance(LogicalUnit): |
4337 |
"""Export an instance to an image in the cluster.
|
4338 |
|
4339 |
"""
|
4340 |
HPATH = "instance-export"
|
4341 |
HTYPE = constants.HTYPE_INSTANCE |
4342 |
_OP_REQP = ["instance_name", "target_node", "shutdown"] |
4343 |
|
4344 |
def BuildHooksEnv(self): |
4345 |
"""Build hooks env.
|
4346 |
|
4347 |
This will run on the master, primary node and target node.
|
4348 |
|
4349 |
"""
|
4350 |
env = { |
4351 |
"EXPORT_NODE": self.op.target_node, |
4352 |
"EXPORT_DO_SHUTDOWN": self.op.shutdown, |
4353 |
} |
4354 |
env.update(_BuildInstanceHookEnvByObject(self.instance))
|
4355 |
nl = [self.sstore.GetMasterNode(), self.instance.primary_node, |
4356 |
self.op.target_node]
|
4357 |
return env, nl, nl
|
4358 |
|
4359 |
def CheckPrereq(self): |
4360 |
"""Check prerequisites.
|
4361 |
|
4362 |
This checks that the instance and node names are valid.
|
4363 |
|
4364 |
"""
|
4365 |
instance_name = self.cfg.ExpandInstanceName(self.op.instance_name) |
4366 |
self.instance = self.cfg.GetInstanceInfo(instance_name) |
4367 |
if self.instance is None: |
4368 |
raise errors.OpPrereqError("Instance '%s' not found" % |
4369 |
self.op.instance_name)
|
4370 |
|
4371 |
# node verification
|
4372 |
dst_node_short = self.cfg.ExpandNodeName(self.op.target_node) |
4373 |
self.dst_node = self.cfg.GetNodeInfo(dst_node_short) |
4374 |
|
4375 |
if self.dst_node is None: |
4376 |
raise errors.OpPrereqError("Destination node '%s' is unknown." % |
4377 |
self.op.target_node)
|
4378 |
self.op.target_node = self.dst_node.name |
4379 |
|
4380 |
# instance disk type verification
|
4381 |
for disk in self.instance.disks: |
4382 |
if disk.dev_type == constants.LD_FILE:
|
4383 |
raise errors.OpPrereqError("Export not supported for instances with" |
4384 |
" file-based disks")
|
4385 |
|
4386 |
def Exec(self, feedback_fn): |
4387 |
"""Export an instance to an image in the cluster.
|
4388 |
|
4389 |
"""
|
4390 |
instance = self.instance
|
4391 |
dst_node = self.dst_node
|
4392 |
src_node = instance.primary_node |
4393 |
if self.op.shutdown: |
4394 |
# shutdown the instance, but not the disks
|
4395 |
if not rpc.call_instance_shutdown(src_node, instance): |
4396 |
raise errors.OpExecError("Could not shutdown instance %s on node %s" % |
4397 |
(instance.name, src_node)) |
4398 |
|
4399 |
vgname = self.cfg.GetVGName()
|
4400 |
|
4401 |
snap_disks = [] |
4402 |
|
4403 |
try:
|
4404 |
for disk in instance.disks: |
4405 |
if disk.iv_name == "sda": |
4406 |
# new_dev_name will be a snapshot of an lvm leaf of the one we passed
|
4407 |
new_dev_name = rpc.call_blockdev_snapshot(src_node, disk) |
4408 |
|
4409 |
if not new_dev_name: |
4410 |
logger.Error("could not snapshot block device %s on node %s" %
|
4411 |
(disk.logical_id[1], src_node))
|
4412 |
else:
|
4413 |
new_dev = objects.Disk(dev_type=constants.LD_LV, size=disk.size, |
4414 |
logical_id=(vgname, new_dev_name), |
4415 |
physical_id=(vgname, new_dev_name), |
4416 |
iv_name=disk.iv_name) |
4417 |
snap_disks.append(new_dev) |
4418 |
|
4419 |
finally:
|
4420 |
if self.op.shutdown and instance.status == "up": |
4421 |
if not rpc.call_instance_start(src_node, instance, None): |
4422 |
_ShutdownInstanceDisks(instance, self.cfg)
|
4423 |
raise errors.OpExecError("Could not start instance") |
4424 |
|
4425 |
# TODO: check for size
|
4426 |
|
4427 |
for dev in snap_disks: |
4428 |
if not rpc.call_snapshot_export(src_node, dev, dst_node.name, instance): |
4429 |
logger.Error("could not export block device %s from node %s to node %s"
|
4430 |
% (dev.logical_id[1], src_node, dst_node.name))
|
4431 |
if not rpc.call_blockdev_remove(src_node, dev): |
4432 |
logger.Error("could not remove snapshot block device %s from node %s" %
|
4433 |
(dev.logical_id[1], src_node))
|
4434 |
|
4435 |
if not rpc.call_finalize_export(dst_node.name, instance, snap_disks): |
4436 |
logger.Error("could not finalize export for instance %s on node %s" %
|
4437 |
(instance.name, dst_node.name)) |
4438 |
|
4439 |
nodelist = self.cfg.GetNodeList()
|
4440 |
nodelist.remove(dst_node.name) |
4441 |
|
4442 |
# on one-node clusters nodelist will be empty after the removal
|
4443 |
# if we proceed the backup would be removed because OpQueryExports
|
4444 |
# substitutes an empty list with the full cluster node list.
|
4445 |
if nodelist:
|
4446 |
op = opcodes.OpQueryExports(nodes=nodelist) |
4447 |
exportlist = self.proc.ChainOpCode(op)
|
4448 |
for node in exportlist: |
4449 |
if instance.name in exportlist[node]: |
4450 |
if not rpc.call_export_remove(node, instance.name): |
4451 |
logger.Error("could not remove older export for instance %s"
|
4452 |
" on node %s" % (instance.name, node))
|
4453 |
|
4454 |
|
4455 |
class LURemoveExport(NoHooksLU): |
4456 |
"""Remove exports related to the named instance.
|
4457 |
|
4458 |
"""
|
4459 |
_OP_REQP = ["instance_name"]
|
4460 |
|
4461 |
def CheckPrereq(self): |
4462 |
"""Check prerequisites.
|
4463 |
"""
|
4464 |
pass
|
4465 |
|
4466 |
def Exec(self, feedback_fn): |
4467 |
"""Remove any export.
|
4468 |
|
4469 |
"""
|
4470 |
instance_name = self.cfg.ExpandInstanceName(self.op.instance_name) |
4471 |
# If the instance was not found we'll try with the name that was passed in.
|
4472 |
# This will only work if it was an FQDN, though.
|
4473 |
fqdn_warn = False
|
4474 |
if not instance_name: |
4475 |
fqdn_warn = True
|
4476 |
instance_name = self.op.instance_name
|
4477 |
|
4478 |
op = opcodes.OpQueryExports(nodes=[]) |
4479 |
exportlist = self.proc.ChainOpCode(op)
|
4480 |
found = False
|
4481 |
for node in exportlist: |
4482 |
if instance_name in exportlist[node]: |
4483 |
found = True
|
4484 |
if not rpc.call_export_remove(node, instance_name): |
4485 |
logger.Error("could not remove export for instance %s"
|
4486 |
" on node %s" % (instance_name, node))
|
4487 |
|
4488 |
if fqdn_warn and not found: |
4489 |
feedback_fn("Export not found. If trying to remove an export belonging"
|
4490 |
" to a deleted instance please use its Fully Qualified"
|
4491 |
" Domain Name.")
|
4492 |
|
4493 |
|
4494 |
class TagsLU(NoHooksLU): |
4495 |
"""Generic tags LU.
|
4496 |
|
4497 |
This is an abstract class which is the parent of all the other tags LUs.
|
4498 |
|
4499 |
"""
|
4500 |
def CheckPrereq(self): |
4501 |
"""Check prerequisites.
|
4502 |
|
4503 |
"""
|
4504 |
if self.op.kind == constants.TAG_CLUSTER: |
4505 |
self.target = self.cfg.GetClusterInfo() |
4506 |
elif self.op.kind == constants.TAG_NODE: |
4507 |
name = self.cfg.ExpandNodeName(self.op.name) |
4508 |
if name is None: |
4509 |
raise errors.OpPrereqError("Invalid node name (%s)" % |
4510 |
(self.op.name,))
|
4511 |
self.op.name = name
|
4512 |
self.target = self.cfg.GetNodeInfo(name) |
4513 |
elif self.op.kind == constants.TAG_INSTANCE: |
4514 |
name = self.cfg.ExpandInstanceName(self.op.name) |
4515 |
if name is None: |
4516 |
raise errors.OpPrereqError("Invalid instance name (%s)" % |
4517 |
(self.op.name,))
|
4518 |
self.op.name = name
|
4519 |
self.target = self.cfg.GetInstanceInfo(name) |
4520 |
else:
|
4521 |
raise errors.OpPrereqError("Wrong tag type requested (%s)" % |
4522 |
str(self.op.kind)) |
4523 |
|
4524 |
|
4525 |
class LUGetTags(TagsLU): |
4526 |
"""Returns the tags of a given object.
|
4527 |
|
4528 |
"""
|
4529 |
_OP_REQP = ["kind", "name"] |
4530 |
|
4531 |
def Exec(self, feedback_fn): |
4532 |
"""Returns the tag list.
|
4533 |
|
4534 |
"""
|
4535 |
return list(self.target.GetTags()) |
4536 |
|
4537 |
|
4538 |
class LUSearchTags(NoHooksLU): |
4539 |
"""Searches the tags for a given pattern.
|
4540 |
|
4541 |
"""
|
4542 |
_OP_REQP = ["pattern"]
|
4543 |
|
4544 |
def CheckPrereq(self): |
4545 |
"""Check prerequisites.
|
4546 |
|
4547 |
This checks the pattern passed for validity by compiling it.
|
4548 |
|
4549 |
"""
|
4550 |
try:
|
4551 |
self.re = re.compile(self.op.pattern) |
4552 |
except re.error, err:
|
4553 |
raise errors.OpPrereqError("Invalid search pattern '%s': %s" % |
4554 |
(self.op.pattern, err))
|
4555 |
|
4556 |
def Exec(self, feedback_fn): |
4557 |
"""Returns the tag list.
|
4558 |
|
4559 |
"""
|
4560 |
cfg = self.cfg
|
4561 |
tgts = [("/cluster", cfg.GetClusterInfo())]
|
4562 |
ilist = [cfg.GetInstanceInfo(name) for name in cfg.GetInstanceList()] |
4563 |
tgts.extend([("/instances/%s" % i.name, i) for i in ilist]) |
4564 |
nlist = [cfg.GetNodeInfo(name) for name in cfg.GetNodeList()] |
4565 |
tgts.extend([("/nodes/%s" % n.name, n) for n in nlist]) |
4566 |
results = [] |
4567 |
for path, target in tgts: |
4568 |
for tag in target.GetTags(): |
4569 |
if self.re.search(tag): |
4570 |
results.append((path, tag)) |
4571 |
return results
|
4572 |
|
4573 |
|
4574 |
class LUAddTags(TagsLU): |
4575 |
"""Sets a tag on a given object.
|
4576 |
|
4577 |
"""
|
4578 |
_OP_REQP = ["kind", "name", "tags"] |
4579 |
|
4580 |
def CheckPrereq(self): |
4581 |
"""Check prerequisites.
|
4582 |
|
4583 |
This checks the type and length of the tag name and value.
|
4584 |
|
4585 |
"""
|
4586 |
TagsLU.CheckPrereq(self)
|
4587 |
for tag in self.op.tags: |
4588 |
objects.TaggableObject.ValidateTag(tag) |
4589 |
|
4590 |
def Exec(self, feedback_fn): |
4591 |
"""Sets the tag.
|
4592 |
|
4593 |
"""
|
4594 |
try:
|
4595 |
for tag in self.op.tags: |
4596 |
self.target.AddTag(tag)
|
4597 |
except errors.TagError, err:
|
4598 |
raise errors.OpExecError("Error while setting tag: %s" % str(err)) |
4599 |
try:
|
4600 |
self.cfg.Update(self.target) |
4601 |
except errors.ConfigurationError:
|
4602 |
raise errors.OpRetryError("There has been a modification to the" |
4603 |
" config file and the operation has been"
|
4604 |
" aborted. Please retry.")
|
4605 |
|
4606 |
|
4607 |
class LUDelTags(TagsLU): |
4608 |
"""Delete a list of tags from a given object.
|
4609 |
|
4610 |
"""
|
4611 |
_OP_REQP = ["kind", "name", "tags"] |
4612 |
|
4613 |
def CheckPrereq(self): |
4614 |
"""Check prerequisites.
|
4615 |
|
4616 |
This checks that we have the given tag.
|
4617 |
|
4618 |
"""
|
4619 |
TagsLU.CheckPrereq(self)
|
4620 |
for tag in self.op.tags: |
4621 |
objects.TaggableObject.ValidateTag(tag) |
4622 |
del_tags = frozenset(self.op.tags) |
4623 |
cur_tags = self.target.GetTags()
|
4624 |
if not del_tags <= cur_tags: |
4625 |
diff_tags = del_tags - cur_tags |
4626 |
diff_names = ["'%s'" % tag for tag in diff_tags] |
4627 |
diff_names.sort() |
4628 |
raise errors.OpPrereqError("Tag(s) %s not found" % |
4629 |
(",".join(diff_names)))
|
4630 |
|
4631 |
def Exec(self, feedback_fn): |
4632 |
"""Remove the tag from the object.
|
4633 |
|
4634 |
"""
|
4635 |
for tag in self.op.tags: |
4636 |
self.target.RemoveTag(tag)
|
4637 |
try:
|
4638 |
self.cfg.Update(self.target) |
4639 |
except errors.ConfigurationError:
|
4640 |
raise errors.OpRetryError("There has been a modification to the" |
4641 |
" config file and the operation has been"
|
4642 |
" aborted. Please retry.")
|
4643 |
|
4644 |
|
4645 |
class LUTestDelay(NoHooksLU): |
4646 |
"""Sleep for a specified amount of time.
|
4647 |
|
4648 |
This LU sleeps on the master and/or nodes for a specified amount of
|
4649 |
time.
|
4650 |
|
4651 |
"""
|
4652 |
_OP_REQP = ["duration", "on_master", "on_nodes"] |
4653 |
REQ_BGL = False
|
4654 |
|
4655 |
def ExpandNames(self): |
4656 |
"""Expand names and set required locks.
|
4657 |
|
4658 |
This expands the node list, if any.
|
4659 |
|
4660 |
"""
|
4661 |
self.needed_locks = {}
|
4662 |
if self.op.on_nodes: |
4663 |
# _GetWantedNodes can be used here, but is not always appropriate to use
|
4664 |
# this way in ExpandNames. Check LogicalUnit.ExpandNames docstring for
|
4665 |
# more information.
|
4666 |
self.op.on_nodes = _GetWantedNodes(self, self.op.on_nodes) |
4667 |
self.needed_locks[locking.LEVEL_NODE] = self.op.on_nodes |
4668 |
|
4669 |
def CheckPrereq(self): |
4670 |
"""Check prerequisites.
|
4671 |
|
4672 |
"""
|
4673 |
|
4674 |
def Exec(self, feedback_fn): |
4675 |
"""Do the actual sleep.
|
4676 |
|
4677 |
"""
|
4678 |
if self.op.on_master: |
4679 |
if not utils.TestDelay(self.op.duration): |
4680 |
raise errors.OpExecError("Error during master delay test") |
4681 |
if self.op.on_nodes: |
4682 |
result = rpc.call_test_delay(self.op.on_nodes, self.op.duration) |
4683 |
if not result: |
4684 |
raise errors.OpExecError("Complete failure from rpc call") |
4685 |
for node, node_result in result.items(): |
4686 |
if not node_result: |
4687 |
raise errors.OpExecError("Failure during rpc call to node %s," |
4688 |
" result: %s" % (node, node_result))
|
4689 |
|
4690 |
|
4691 |
class IAllocator(object): |
4692 |
"""IAllocator framework.
|
4693 |
|
4694 |
An IAllocator instance has three sets of attributes:
|
4695 |
- cfg/sstore that are needed to query the cluster
|
4696 |
- input data (all members of the _KEYS class attribute are required)
|
4697 |
- four buffer attributes (in|out_data|text), that represent the
|
4698 |
input (to the external script) in text and data structure format,
|
4699 |
and the output from it, again in two formats
|
4700 |
- the result variables from the script (success, info, nodes) for
|
4701 |
easy usage
|
4702 |
|
4703 |
"""
|
4704 |
_ALLO_KEYS = [ |
4705 |
"mem_size", "disks", "disk_template", |
4706 |
"os", "tags", "nics", "vcpus", |
4707 |
] |
4708 |
_RELO_KEYS = [ |
4709 |
"relocate_from",
|
4710 |
] |
4711 |
|
4712 |
def __init__(self, cfg, sstore, mode, name, **kwargs): |
4713 |
self.cfg = cfg
|
4714 |
self.sstore = sstore
|
4715 |
# init buffer variables
|
4716 |
self.in_text = self.out_text = self.in_data = self.out_data = None |
4717 |
# init all input fields so that pylint is happy
|
4718 |
self.mode = mode
|
4719 |
self.name = name
|
4720 |
self.mem_size = self.disks = self.disk_template = None |
4721 |
self.os = self.tags = self.nics = self.vcpus = None |
4722 |
self.relocate_from = None |
4723 |
# computed fields
|
4724 |
self.required_nodes = None |
4725 |
# init result fields
|
4726 |
self.success = self.info = self.nodes = None |
4727 |
if self.mode == constants.IALLOCATOR_MODE_ALLOC: |
4728 |
keyset = self._ALLO_KEYS
|
4729 |
elif self.mode == constants.IALLOCATOR_MODE_RELOC: |
4730 |
keyset = self._RELO_KEYS
|
4731 |
else:
|
4732 |
raise errors.ProgrammerError("Unknown mode '%s' passed to the" |
4733 |
" IAllocator" % self.mode) |
4734 |
for key in kwargs: |
4735 |
if key not in keyset: |
4736 |
raise errors.ProgrammerError("Invalid input parameter '%s' to" |
4737 |
" IAllocator" % key)
|
4738 |
setattr(self, key, kwargs[key]) |
4739 |
for key in keyset: |
4740 |
if key not in kwargs: |
4741 |
raise errors.ProgrammerError("Missing input parameter '%s' to" |
4742 |
" IAllocator" % key)
|
4743 |
self._BuildInputData()
|
4744 |
|
4745 |
def _ComputeClusterData(self): |
4746 |
"""Compute the generic allocator input data.
|
4747 |
|
4748 |
This is the data that is independent of the actual operation.
|
4749 |
|
4750 |
"""
|
4751 |
cfg = self.cfg
|
4752 |
# cluster data
|
4753 |
data = { |
4754 |
"version": 1, |
4755 |
"cluster_name": self.sstore.GetClusterName(), |
4756 |
"cluster_tags": list(cfg.GetClusterInfo().GetTags()), |
4757 |
"hypervisor_type": self.sstore.GetHypervisorType(), |
4758 |
# we don't have job IDs
|
4759 |
} |
4760 |
|
4761 |
i_list = [cfg.GetInstanceInfo(iname) for iname in cfg.GetInstanceList()] |
4762 |
|
4763 |
# node data
|
4764 |
node_results = {} |
4765 |
node_list = cfg.GetNodeList() |
4766 |
node_data = rpc.call_node_info(node_list, cfg.GetVGName()) |
4767 |
for nname in node_list: |
4768 |
ninfo = cfg.GetNodeInfo(nname) |
4769 |
if nname not in node_data or not isinstance(node_data[nname], dict): |
4770 |
raise errors.OpExecError("Can't get data for node %s" % nname) |
4771 |
remote_info = node_data[nname] |
4772 |
for attr in ['memory_total', 'memory_free', 'memory_dom0', |
4773 |
'vg_size', 'vg_free', 'cpu_total']: |
4774 |
if attr not in remote_info: |
4775 |
raise errors.OpExecError("Node '%s' didn't return attribute '%s'" % |
4776 |
(nname, attr)) |
4777 |
try:
|
4778 |
remote_info[attr] = int(remote_info[attr])
|
4779 |
except ValueError, err: |
4780 |
raise errors.OpExecError("Node '%s' returned invalid value for '%s':" |
4781 |
" %s" % (nname, attr, str(err))) |
4782 |
# compute memory used by primary instances
|
4783 |
i_p_mem = i_p_up_mem = 0
|
4784 |
for iinfo in i_list: |
4785 |
if iinfo.primary_node == nname:
|
4786 |
i_p_mem += iinfo.memory |
4787 |
if iinfo.status == "up": |
4788 |
i_p_up_mem += iinfo.memory |
4789 |
|
4790 |
# compute memory used by instances
|
4791 |
pnr = { |
4792 |
"tags": list(ninfo.GetTags()), |
4793 |
"total_memory": remote_info['memory_total'], |
4794 |
"reserved_memory": remote_info['memory_dom0'], |
4795 |
"free_memory": remote_info['memory_free'], |
4796 |
"i_pri_memory": i_p_mem,
|
4797 |
"i_pri_up_memory": i_p_up_mem,
|
4798 |
"total_disk": remote_info['vg_size'], |
4799 |
"free_disk": remote_info['vg_free'], |
4800 |
"primary_ip": ninfo.primary_ip,
|
4801 |
"secondary_ip": ninfo.secondary_ip,
|
4802 |
"total_cpus": remote_info['cpu_total'], |
4803 |
} |
4804 |
node_results[nname] = pnr |
4805 |
data["nodes"] = node_results
|
4806 |
|
4807 |
# instance data
|
4808 |
instance_data = {} |
4809 |
for iinfo in i_list: |
4810 |
nic_data = [{"mac": n.mac, "ip": n.ip, "bridge": n.bridge} |
4811 |
for n in iinfo.nics] |
4812 |
pir = { |
4813 |
"tags": list(iinfo.GetTags()), |
4814 |
"should_run": iinfo.status == "up", |
4815 |
"vcpus": iinfo.vcpus,
|
4816 |
"memory": iinfo.memory,
|
4817 |
"os": iinfo.os,
|
4818 |
"nodes": [iinfo.primary_node] + list(iinfo.secondary_nodes), |
4819 |
"nics": nic_data,
|
4820 |
"disks": [{"size": dsk.size, "mode": "w"} for dsk in iinfo.disks], |
4821 |
"disk_template": iinfo.disk_template,
|
4822 |
} |
4823 |
instance_data[iinfo.name] = pir |
4824 |
|
4825 |
data["instances"] = instance_data
|
4826 |
|
4827 |
self.in_data = data
|
4828 |
|
4829 |
def _AddNewInstance(self): |
4830 |
"""Add new instance data to allocator structure.
|
4831 |
|
4832 |
This in combination with _AllocatorGetClusterData will create the
|
4833 |
correct structure needed as input for the allocator.
|
4834 |
|
4835 |
The checks for the completeness of the opcode must have already been
|
4836 |
done.
|
4837 |
|
4838 |
"""
|
4839 |
data = self.in_data
|
4840 |
if len(self.disks) != 2: |
4841 |
raise errors.OpExecError("Only two-disk configurations supported") |
4842 |
|
4843 |
disk_space = _ComputeDiskSize(self.disk_template,
|
4844 |
self.disks[0]["size"], self.disks[1]["size"]) |
4845 |
|
4846 |
if self.disk_template in constants.DTS_NET_MIRROR: |
4847 |
self.required_nodes = 2 |
4848 |
else:
|
4849 |
self.required_nodes = 1 |
4850 |
request = { |
4851 |
"type": "allocate", |
4852 |
"name": self.name, |
4853 |
"disk_template": self.disk_template, |
4854 |
"tags": self.tags, |
4855 |
"os": self.os, |
4856 |
"vcpus": self.vcpus, |
4857 |
"memory": self.mem_size, |
4858 |
"disks": self.disks, |
4859 |
"disk_space_total": disk_space,
|
4860 |
"nics": self.nics, |
4861 |
"required_nodes": self.required_nodes, |
4862 |
} |
4863 |
data["request"] = request
|
4864 |
|
4865 |
def _AddRelocateInstance(self): |
4866 |
"""Add relocate instance data to allocator structure.
|
4867 |
|
4868 |
This in combination with _IAllocatorGetClusterData will create the
|
4869 |
correct structure needed as input for the allocator.
|
4870 |
|
4871 |
The checks for the completeness of the opcode must have already been
|
4872 |
done.
|
4873 |
|
4874 |
"""
|
4875 |
instance = self.cfg.GetInstanceInfo(self.name) |
4876 |
if instance is None: |
4877 |
raise errors.ProgrammerError("Unknown instance '%s' passed to" |
4878 |
" IAllocator" % self.name) |
4879 |
|
4880 |
if instance.disk_template not in constants.DTS_NET_MIRROR: |
4881 |
raise errors.OpPrereqError("Can't relocate non-mirrored instances") |
4882 |
|
4883 |
if len(instance.secondary_nodes) != 1: |
4884 |
raise errors.OpPrereqError("Instance has not exactly one secondary node") |
4885 |
|
4886 |
self.required_nodes = 1 |
4887 |
|
4888 |
disk_space = _ComputeDiskSize(instance.disk_template, |
4889 |
instance.disks[0].size,
|
4890 |
instance.disks[1].size)
|
4891 |
|
4892 |
request = { |
4893 |
"type": "relocate", |
4894 |
"name": self.name, |
4895 |
"disk_space_total": disk_space,
|
4896 |
"required_nodes": self.required_nodes, |
4897 |
"relocate_from": self.relocate_from, |
4898 |
} |
4899 |
self.in_data["request"] = request |
4900 |
|
4901 |
def _BuildInputData(self): |
4902 |
"""Build input data structures.
|
4903 |
|
4904 |
"""
|
4905 |
self._ComputeClusterData()
|
4906 |
|
4907 |
if self.mode == constants.IALLOCATOR_MODE_ALLOC: |
4908 |
self._AddNewInstance()
|
4909 |
else:
|
4910 |
self._AddRelocateInstance()
|
4911 |
|
4912 |
self.in_text = serializer.Dump(self.in_data) |
4913 |
|
4914 |
def Run(self, name, validate=True, call_fn=rpc.call_iallocator_runner): |
4915 |
"""Run an instance allocator and return the results.
|
4916 |
|
4917 |
"""
|
4918 |
data = self.in_text
|
4919 |
|
4920 |
result = call_fn(self.sstore.GetMasterNode(), name, self.in_text) |
4921 |
|
4922 |
if not isinstance(result, tuple) or len(result) != 4: |
4923 |
raise errors.OpExecError("Invalid result from master iallocator runner") |
4924 |
|
4925 |
rcode, stdout, stderr, fail = result |
4926 |
|
4927 |
if rcode == constants.IARUN_NOTFOUND:
|
4928 |
raise errors.OpExecError("Can't find allocator '%s'" % name) |
4929 |
elif rcode == constants.IARUN_FAILURE:
|
4930 |
raise errors.OpExecError("Instance allocator call failed: %s," |
4931 |
" output: %s" % (fail, stdout+stderr))
|
4932 |
self.out_text = stdout
|
4933 |
if validate:
|
4934 |
self._ValidateResult()
|
4935 |
|
4936 |
def _ValidateResult(self): |
4937 |
"""Process the allocator results.
|
4938 |
|
4939 |
This will process and if successful save the result in
|
4940 |
self.out_data and the other parameters.
|
4941 |
|
4942 |
"""
|
4943 |
try:
|
4944 |
rdict = serializer.Load(self.out_text)
|
4945 |
except Exception, err: |
4946 |
raise errors.OpExecError("Can't parse iallocator results: %s" % str(err)) |
4947 |
|
4948 |
if not isinstance(rdict, dict): |
4949 |
raise errors.OpExecError("Can't parse iallocator results: not a dict") |
4950 |
|
4951 |
for key in "success", "info", "nodes": |
4952 |
if key not in rdict: |
4953 |
raise errors.OpExecError("Can't parse iallocator results:" |
4954 |
" missing key '%s'" % key)
|
4955 |
setattr(self, key, rdict[key]) |
4956 |
|
4957 |
if not isinstance(rdict["nodes"], list): |
4958 |
raise errors.OpExecError("Can't parse iallocator results: 'nodes' key" |
4959 |
" is not a list")
|
4960 |
self.out_data = rdict
|
4961 |
|
4962 |
|
4963 |
class LUTestAllocator(NoHooksLU): |
4964 |
"""Run allocator tests.
|
4965 |
|
4966 |
This LU runs the allocator tests
|
4967 |
|
4968 |
"""
|
4969 |
_OP_REQP = ["direction", "mode", "name"] |
4970 |
|
4971 |
def CheckPrereq(self): |
4972 |
"""Check prerequisites.
|
4973 |
|
4974 |
This checks the opcode parameters depending on the director and mode test.
|
4975 |
|
4976 |
"""
|
4977 |
if self.op.mode == constants.IALLOCATOR_MODE_ALLOC: |
4978 |
for attr in ["name", "mem_size", "disks", "disk_template", |
4979 |
"os", "tags", "nics", "vcpus"]: |
4980 |
if not hasattr(self.op, attr): |
4981 |
raise errors.OpPrereqError("Missing attribute '%s' on opcode input" % |
4982 |
attr) |
4983 |
iname = self.cfg.ExpandInstanceName(self.op.name) |
4984 |
if iname is not None: |
4985 |
raise errors.OpPrereqError("Instance '%s' already in the cluster" % |
4986 |
iname) |
4987 |
if not isinstance(self.op.nics, list): |
4988 |
raise errors.OpPrereqError("Invalid parameter 'nics'") |
4989 |
for row in self.op.nics: |
4990 |
if (not isinstance(row, dict) or |
4991 |
"mac" not in row or |
4992 |
"ip" not in row or |
4993 |
"bridge" not in row): |
4994 |
raise errors.OpPrereqError("Invalid contents of the" |
4995 |
" 'nics' parameter")
|
4996 |
if not isinstance(self.op.disks, list): |
4997 |
raise errors.OpPrereqError("Invalid parameter 'disks'") |
4998 |
if len(self.op.disks) != 2: |
4999 |
raise errors.OpPrereqError("Only two-disk configurations supported") |
5000 |
for row in self.op.disks: |
5001 |
if (not isinstance(row, dict) or |
5002 |
"size" not in row or |
5003 |
not isinstance(row["size"], int) or |
5004 |
"mode" not in row or |
5005 |
row["mode"] not in ['r', 'w']): |
5006 |
raise errors.OpPrereqError("Invalid contents of the" |
5007 |
" 'disks' parameter")
|
5008 |
elif self.op.mode == constants.IALLOCATOR_MODE_RELOC: |
5009 |
if not hasattr(self.op, "name"): |
5010 |
raise errors.OpPrereqError("Missing attribute 'name' on opcode input") |
5011 |
fname = self.cfg.ExpandInstanceName(self.op.name) |
5012 |
if fname is None: |
5013 |
raise errors.OpPrereqError("Instance '%s' not found for relocation" % |
5014 |
self.op.name)
|
5015 |
self.op.name = fname
|
5016 |
self.relocate_from = self.cfg.GetInstanceInfo(fname).secondary_nodes |
5017 |
else:
|
5018 |
raise errors.OpPrereqError("Invalid test allocator mode '%s'" % |
5019 |
self.op.mode)
|
5020 |
|
5021 |
if self.op.direction == constants.IALLOCATOR_DIR_OUT: |
5022 |
if not hasattr(self.op, "allocator") or self.op.allocator is None: |
5023 |
raise errors.OpPrereqError("Missing allocator name") |
5024 |
elif self.op.direction != constants.IALLOCATOR_DIR_IN: |
5025 |
raise errors.OpPrereqError("Wrong allocator test '%s'" % |
5026 |
self.op.direction)
|
5027 |
|
5028 |
def Exec(self, feedback_fn): |
5029 |
"""Run the allocator test.
|
5030 |
|
5031 |
"""
|
5032 |
if self.op.mode == constants.IALLOCATOR_MODE_ALLOC: |
5033 |
ial = IAllocator(self.cfg, self.sstore, |
5034 |
mode=self.op.mode,
|
5035 |
name=self.op.name,
|
5036 |
mem_size=self.op.mem_size,
|
5037 |
disks=self.op.disks,
|
5038 |
disk_template=self.op.disk_template,
|
5039 |
os=self.op.os,
|
5040 |
tags=self.op.tags,
|
5041 |
nics=self.op.nics,
|
5042 |
vcpus=self.op.vcpus,
|
5043 |
) |
5044 |
else:
|
5045 |
ial = IAllocator(self.cfg, self.sstore, |
5046 |
mode=self.op.mode,
|
5047 |
name=self.op.name,
|
5048 |
relocate_from=list(self.relocate_from), |
5049 |
) |
5050 |
|
5051 |
if self.op.direction == constants.IALLOCATOR_DIR_IN: |
5052 |
result = ial.in_text |
5053 |
else:
|
5054 |
ial.Run(self.op.allocator, validate=False) |
5055 |
result = ial.out_text |
5056 |
return result
|