#
#
-# Copyright (C) 2006, 2007, 2008 Google Inc.
+# Copyright (C) 2006, 2007, 2008, 2009, 2010 Google Inc.
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
import os
import re
+import logging
from ganeti import errors
from ganeti import utils
+from ganeti import constants
+
+
+def _IsCpuMaskWellFormed(cpu_mask):
+ try:
+ cpu_list = utils.ParseCpuMask(cpu_mask)
+ except errors.ParseError, _:
+ return False
+ return isinstance(cpu_list, list) and len(cpu_list) > 0
# Read the BaseHypervisor.PARAMETERS docstring for the syntax of the
# _CHECK values
# must be afile
-_FILE_CHECK = (os.path.isabs, "must be an absolute path",
+_FILE_CHECK = (utils.IsNormAbsPath, "must be an absolute normalized path",
os.path.isfile, "not found or not a file")
# must be a directory
-_DIR_CHECK = (os.path.isabs, "must be an absolute path",
+_DIR_CHECK = (utils.IsNormAbsPath, "must be an absolute normalized path",
os.path.isdir, "not found or not a directory")
+# CPU mask must be well-formed
+# TODO: implement node level check for the CPU mask
+_CPU_MASK_CHECK = (_IsCpuMaskWellFormed,
+ "CPU mask definition is not well-formed",
+ None, None)
+
# nice wrappers for users
REQ_FILE_CHECK = (True, ) + _FILE_CHECK
OPT_FILE_CHECK = (False, ) + _FILE_CHECK
REQ_DIR_CHECK = (True, ) + _DIR_CHECK
OPT_DIR_CHECK = (False, ) + _DIR_CHECK
+NET_PORT_CHECK = (True, lambda x: x > 0 and x < 65535, "invalid port number",
+ None, None)
+OPT_CPU_MASK_CHECK = (False, ) + _CPU_MASK_CHECK
+REQ_CPU_MASK_CHECK = (True, ) + _CPU_MASK_CHECK
# no checks at all
NO_CHECK = (False, None, None, None, None)
# required, but no other checks
REQUIRED_CHECK = (True, None, None, None, None)
+# migration type
+MIGRATION_MODE_CHECK = (True, lambda x: x in constants.HT_MIGRATION_MODES,
+ "invalid migration mode", None, None)
+
+
def ParamInSet(required, my_set):
"""Builds parameter checker for set membership.
- a function to check for parameter validity on the remote node,
in the L{ValidateParameters} function
- an error message for the above function
+ @type CAN_MIGRATE: boolean
+ @cvar CAN_MIGRATE: whether this hypervisor can do migration (either
+ live or non-live)
"""
PARAMETERS = {}
+ ANCILLARY_FILES = []
+ CAN_MIGRATE = False
def __init__(self):
pass
"""Start an instance."""
raise NotImplementedError
- def StopInstance(self, instance, force=False):
- """Stop an instance."""
+ def StopInstance(self, instance, force=False, retry=False, name=None):
+ """Stop an instance
+
+ @type instance: L{objects.Instance}
+ @param instance: instance to stop
+ @type force: boolean
+ @param force: whether to do a "hard" stop (destroy)
+ @type retry: boolean
+ @param retry: whether this is just a retry call
+ @type name: string or None
+ @param name: if this parameter is passed, the the instance object
+ should not be used (will be passed as None), and the shutdown
+ must be done by name only
+
+ """
raise NotImplementedError
+ def CleanupInstance(self, instance_name):
+ """Cleanup after a stopped instance
+
+ This is an optional method, used by hypervisors that need to cleanup after
+ an instance has been stopped.
+
+ @type instance_name: string
+ @param instance_name: instance name to cleanup after
+
+ """
+ pass
+
def RebootInstance(self, instance):
"""Reboot an instance."""
raise NotImplementedError
raise NotImplementedError
@classmethod
- def GetShellCommandForConsole(cls, instance, hvparams, beparams):
- """Return a command for connecting to the console of an instance.
+ def GetInstanceConsole(cls, instance, hvparams, beparams):
+ """Return information for connecting to the console of an instance.
"""
raise NotImplementedError
+ @classmethod
+ def GetAncillaryFiles(cls):
+ """Return a list of ancillary files to be copied to all nodes as ancillary
+ configuration files.
+
+ @rtype: list of strings
+ @return: list of absolute paths of files to ship cluster-wide
+
+ """
+ # By default we return a member variable, so that if an hypervisor has just
+ # a static list of files it doesn't have to override this function.
+ return cls.ANCILLARY_FILES
+
def Verify(self):
"""Verify the hypervisor.
"""
raise NotImplementedError
- def MigrationInfo(self, instance):
+ def MigrationInfo(self, instance): # pylint: disable-msg=R0201,W0613
"""Get instance information to perform a migration.
By default assume no information is needed.
Since by default we do no preparation, we also don't have anything to do
@type instance: L{objects.Instance}
- @param instance: instance whose migration is being aborted
+ @param instance: instance whose migration is being finalized
@type info: string/data (opaque)
@param info: migration information, from the source node
@type success: boolean
"""
pass
- def MigrateInstance(self, name, target, live):
+ def MigrateInstance(self, instance, target, live):
"""Migrate an instance.
- @type name: string
- @param name: name of the instance to be migrated
+ @type instance: L{objects.Instance}
+ @param instance: the instance to be migrated
@type target: string
@param target: hostname (usually ip) of the target node
@type live: boolean
" validation: %s (current value: '%s')" %
(name, errstr, value))
- def GetLinuxNodeInfo(self):
+ @classmethod
+ def PowercycleNode(cls):
+ """Hard powercycle a node using hypervisor specific methods.
+
+ This method should hard powercycle the node, using whatever
+ methods the hypervisor provides. Note that this means that all
+ instances running on the node must be stopped too.
+
+ """
+ raise NotImplementedError
+
+ @staticmethod
+ def GetLinuxNodeInfo():
"""For linux systems, return actual OS information.
This is an abstraction for all non-hypervisor-based classes, where
"""
try:
- fh = file("/proc/meminfo")
- try:
- data = fh.readlines()
- finally:
- fh.close()
+ data = utils.ReadFile("/proc/meminfo").splitlines()
except EnvironmentError, err:
raise errors.HypervisorError("Failed to list node info: %s" % (err,))
result['cpu_sockets'] = 1
return result
+
+ @classmethod
+ def LinuxPowercycle(cls):
+ """Linux-specific powercycle method.
+
+ """
+ try:
+ fd = os.open("/proc/sysrq-trigger", os.O_WRONLY)
+ try:
+ os.write(fd, "b")
+ finally:
+ fd.close()
+ except OSError:
+ logging.exception("Can't open the sysrq-trigger file")
+ result = utils.RunCmd(["reboot", "-n", "-f"])
+ if not result:
+ logging.error("Can't run shutdown: %s", result.output)
projects / ganeti-local / blobdiff