import tempfile
import re
import platform
+import logging
from ganeti import rpc
from ganeti import ssh
self.cfg = context.cfg
self.sstore = sstore
self.context = context
+ # Dicts used to declare locking needs to mcpu
self.needed_locks = None
self.acquired_locks = {}
self.share_locks = dict(((i, 0) for i in locking.LEVELS))
+ self.add_locks = {}
+ self.remove_locks = {}
# Used to force good behavior when calling helper functions
self.recalculate_locks = {}
self.__ssh = None
- Use an empty dict if you don't need any lock
- If you don't need any lock at a particular level omit that level
- Don't put anything for the BGL level
- - If you want all locks at a level use None as a value
- (this reflects what LockSet does, and will be replaced before
- CheckPrereq with the full list of nodes that have been locked)
+ - If you want all locks at a level use locking.ALL_SET as a value
If you need to share locks (rather than acquire them exclusively) at one
level you can modify self.share_locks, setting a true value (usually 1) for
Examples:
# Acquire all nodes and one instance
self.needed_locks = {
- locking.LEVEL_NODE: None,
- locking.LEVEL_INSTANCES: ['instance1.example.tld'],
+ locking.LEVEL_NODE: locking.ALL_SET,
+ locking.LEVEL_INSTANCE: ['instance1.example.tld'],
}
# Acquire just two nodes
self.needed_locks = {
self.needed_locks[locking.LEVEL_INSTANCE] = expanded_name
self.op.instance_name = expanded_name
- def _LockInstancesNodes(self):
+ def _LockInstancesNodes(self, primary_only=False):
"""Helper function to declare instances' nodes for locking.
This function should be called after locking one or more instances to lock
if level == locking.LEVEL_NODE:
self._LockInstancesNodes()
+ @type primary_only: boolean
+ @param primary_only: only lock primary nodes of locked instances
+
"""
assert locking.LEVEL_NODE in self.recalculate_locks, \
"_LockInstancesNodes helper function called with no nodes to recalculate"
for instance_name in self.acquired_locks[locking.LEVEL_INSTANCE]:
instance = self.context.cfg.GetInstanceInfo(instance_name)
wanted_nodes.append(instance.primary_node)
- wanted_nodes.extend(instance.secondary_nodes)
- self.needed_locks[locking.LEVEL_NODE] = wanted_nodes
+ if not primary_only:
+ wanted_nodes.extend(instance.secondary_nodes)
+
+ if self.recalculate_locks[locking.LEVEL_NODE] == constants.LOCKS_REPLACE:
+ self.needed_locks[locking.LEVEL_NODE] = wanted_nodes
+ elif self.recalculate_locks[locking.LEVEL_NODE] == constants.LOCKS_APPEND:
+ self.needed_locks[locking.LEVEL_NODE].extend(wanted_nodes)
del self.recalculate_locks[locking.LEVEL_NODE]
if not isinstance(nodes, list):
raise errors.OpPrereqError("Invalid argument type 'nodes'")
- if nodes:
- wanted = []
+ if not nodes:
+ raise errors.ProgrammerError("_GetWantedNodes should only be called with a"
+ " non-empty list of nodes whose name is to be expanded.")
- for name in nodes:
- node = lu.cfg.ExpandNodeName(name)
- if node is None:
- raise errors.OpPrereqError("No such node name '%s'" % name)
- wanted.append(node)
+ wanted = []
+ for name in nodes:
+ node = lu.cfg.ExpandNodeName(name)
+ if node is None:
+ raise errors.OpPrereqError("No such node name '%s'" % name)
+ wanted.append(node)
- else:
- wanted = lu.cfg.GetNodeList()
return utils.NiceSort(wanted)
HPATH = "cluster-verify"
HTYPE = constants.HTYPE_CLUSTER
_OP_REQP = ["skip_checks"]
+ REQ_BGL = False
+
+ def ExpandNames(self):
+ self.needed_locks = {
+ locking.LEVEL_NODE: locking.ALL_SET,
+ locking.LEVEL_INSTANCE: locking.ALL_SET,
+ }
+ self.share_locks = dict(((i, 1) for i in locking.LEVELS))
def _VerifyNode(self, node, file_list, local_cksum, vglist, node_result,
remote_version, feedback_fn):
"""
_OP_REQP = []
+ REQ_BGL = False
+
+ def ExpandNames(self):
+ self.needed_locks = {
+ locking.LEVEL_NODE: locking.ALL_SET,
+ locking.LEVEL_INSTANCE: locking.ALL_SET,
+ }
+ self.share_locks = dict(((i, 1) for i in locking.LEVELS))
def CheckPrereq(self):
"""Check prerequisites.
HPATH = "cluster-modify"
HTYPE = constants.HTYPE_CLUSTER
_OP_REQP = []
+ REQ_BGL = False
+
+ def ExpandNames(self):
+ # FIXME: in the future maybe other cluster params won't require checking on
+ # all nodes to be modified.
+ self.needed_locks = {
+ locking.LEVEL_NODE: locking.ALL_SET,
+ }
+ self.share_locks[locking.LEVEL_NODE] = 1
def BuildHooksEnv(self):
"""Build hooks env.
if the given volume group is valid.
"""
+ # FIXME: This only works because there is only one parameter that can be
+ # changed or removed.
if not self.op.vg_name:
- instances = [self.cfg.GetInstanceInfo(name)
- for name in self.cfg.GetInstanceList()]
+ instances = self.cfg.GetAllInstancesInfo().values()
for inst in instances:
for disk in inst.disks:
if _RecursiveCheckIfLVMBased(disk):
# if vg_name not None, checks given volume group on all nodes
if self.op.vg_name:
- node_list = self.cfg.GetNodeList()
+ node_list = self.acquired_locks[locking.LEVEL_NODE]
vglist = rpc.call_vg_list(node_list)
for node in node_list:
vgstatus = utils.CheckVolumeGroupSize(vglist[node], self.op.vg_name,
"""
_OP_REQP = ["output_fields", "names"]
+ REQ_BGL = False
- def CheckPrereq(self):
- """Check prerequisites.
-
- This always succeeds, since this is a pure query LU.
-
- """
+ def ExpandNames(self):
if self.op.names:
raise errors.OpPrereqError("Selective OS query not supported")
dynamic=self.dynamic_fields,
selected=self.op.output_fields)
+ # Lock all nodes, in shared mode
+ self.needed_locks = {}
+ self.share_locks[locking.LEVEL_NODE] = 1
+ self.needed_locks[locking.LEVEL_NODE] = locking.ALL_SET
+
+ def CheckPrereq(self):
+ """Check prerequisites.
+
+ """
+
@staticmethod
def _DiagnoseByOS(node_list, rlist):
"""Remaps a per-node return list into an a per-os per-node dictionary
"""Compute the list of OSes.
"""
- node_list = self.cfg.GetNodeList()
+ node_list = self.acquired_locks[locking.LEVEL_NODE]
node_data = rpc.call_os_diagnose(node_list)
if node_data == False:
raise errors.OpExecError("Can't gather the list of OSes")
"ctotal",
])
- _CheckOutputFields(static=["name", "pinst_cnt", "sinst_cnt",
- "pinst_list", "sinst_list",
- "pip", "sip", "tags"],
+ self.static_fields = frozenset([
+ "name", "pinst_cnt", "sinst_cnt",
+ "pinst_list", "sinst_list",
+ "pip", "sip", "tags",
+ "serial_no",
+ ])
+
+ _CheckOutputFields(static=self.static_fields,
dynamic=self.dynamic_fields,
selected=self.op.output_fields)
self.needed_locks = {}
self.share_locks[locking.LEVEL_NODE] = 1
- # TODO: we could lock nodes only if the user asked for dynamic fields. For
- # that we need atomic ways to get info for a group of nodes from the
- # config, though.
- if not self.op.names:
- self.needed_locks[locking.LEVEL_NODE] = None
+
+ if self.op.names:
+ self.wanted = _GetWantedNodes(self, self.op.names)
else:
- self.needed_locks[locking.LEVEL_NODE] = \
- _GetWantedNodes(self, self.op.names)
+ self.wanted = locking.ALL_SET
+
+ self.do_locking = not self.static_fields.issuperset(self.op.output_fields)
+ if self.do_locking:
+ # if we don't request only static fields, we need to lock the nodes
+ self.needed_locks[locking.LEVEL_NODE] = self.wanted
+
def CheckPrereq(self):
"""Check prerequisites.
"""
- # This of course is valid only if we locked the nodes
- self.wanted = self.acquired_locks[locking.LEVEL_NODE]
+ # The validation of the node list is done in the _GetWantedNodes,
+ # if non empty, and if empty, there's no validation to do
+ pass
def Exec(self, feedback_fn):
"""Computes the list of nodes and their attributes.
"""
- nodenames = self.wanted
- nodelist = [self.cfg.GetNodeInfo(name) for name in nodenames]
+ all_info = self.cfg.GetAllNodesInfo()
+ if self.do_locking:
+ nodenames = self.acquired_locks[locking.LEVEL_NODE]
+ elif self.wanted != locking.ALL_SET:
+ nodenames = self.wanted
+ missing = set(nodenames).difference(all_info.keys())
+ if missing:
+ raise self.OpExecError(
+ "Some nodes were removed before retrieving their data: %s" % missing)
+ else:
+ nodenames = all_info.keys()
+ nodelist = [all_info[name] for name in nodenames]
# begin data gathering
val = node.secondary_ip
elif field == "tags":
val = list(node.GetTags())
+ elif field == "serial_no":
+ val = node.serial_no
elif field in self.dynamic_fields:
val = live_data[node.name].get(field, None)
else:
"""
_OP_REQP = ["nodes", "output_fields"]
+ REQ_BGL = False
+
+ def ExpandNames(self):
+ _CheckOutputFields(static=["node"],
+ dynamic=["phys", "vg", "name", "size", "instance"],
+ selected=self.op.output_fields)
+
+ self.needed_locks = {}
+ self.share_locks[locking.LEVEL_NODE] = 1
+ if not self.op.nodes:
+ self.needed_locks[locking.LEVEL_NODE] = locking.ALL_SET
+ else:
+ self.needed_locks[locking.LEVEL_NODE] = \
+ _GetWantedNodes(self, self.op.nodes)
def CheckPrereq(self):
"""Check prerequisites.
This checks that the fields required are valid output fields.
"""
- self.nodes = _GetWantedNodes(self, self.op.nodes)
-
- _CheckOutputFields(static=["node"],
- dynamic=["phys", "vg", "name", "size", "instance"],
- selected=self.op.output_fields)
-
+ self.nodes = self.acquired_locks[locking.LEVEL_NODE]
def Exec(self, feedback_fn):
"""Computes the list of nodes and their attributes.
"""
_OP_REQP = ["instance_name"]
+ REQ_BGL = False
+
+ def ExpandNames(self):
+ self._ExpandAndLockInstance()
+ self.needed_locks[locking.LEVEL_NODE] = []
+ self.recalculate_locks[locking.LEVEL_NODE] = constants.LOCKS_REPLACE
+
+ def DeclareLocks(self, level):
+ if level == locking.LEVEL_NODE:
+ self._LockInstancesNodes()
def CheckPrereq(self):
"""Check prerequisites.
This checks that the instance is in the cluster.
"""
- instance = self.cfg.GetInstanceInfo(
- self.cfg.ExpandInstanceName(self.op.instance_name))
- if instance is None:
- raise errors.OpPrereqError("Instance '%s' not known" %
- self.op.instance_name)
- self.instance = instance
-
+ self.instance = self.cfg.GetInstanceInfo(self.op.instance_name)
+ assert self.instance is not None, \
+ "Cannot retrieve locked instance %s" % self.op.instance_name
def Exec(self, feedback_fn):
"""Activate the disks.
"""
_OP_REQP = ["instance_name"]
+ REQ_BGL = False
+
+ def ExpandNames(self):
+ self._ExpandAndLockInstance()
+ self.needed_locks[locking.LEVEL_NODE] = []
+ self.recalculate_locks[locking.LEVEL_NODE] = constants.LOCKS_REPLACE
+
+ def DeclareLocks(self, level):
+ if level == locking.LEVEL_NODE:
+ self._LockInstancesNodes()
def CheckPrereq(self):
"""Check prerequisites.
This checks that the instance is in the cluster.
"""
- instance = self.cfg.GetInstanceInfo(
- self.cfg.ExpandInstanceName(self.op.instance_name))
- if instance is None:
- raise errors.OpPrereqError("Instance '%s' not known" %
- self.op.instance_name)
- self.instance = instance
+ self.instance = self.cfg.GetInstanceInfo(self.op.instance_name)
+ assert self.instance is not None, \
+ "Cannot retrieve locked instance %s" % self.op.instance_name
def Exec(self, feedback_fn):
"""Deactivate the disks
"""
instance = self.instance
- ins_l = rpc.call_instance_list([instance.primary_node])
- ins_l = ins_l[instance.primary_node]
- if not type(ins_l) is list:
- raise errors.OpExecError("Can't contact node '%s'" %
- instance.primary_node)
+ _SafeShutdownInstanceDisks(instance, self.cfg)
- if self.instance.name in ins_l:
- raise errors.OpExecError("Instance is running, can't shutdown"
- " block devices.")
- _ShutdownInstanceDisks(instance, self.cfg)
+def _SafeShutdownInstanceDisks(instance, cfg):
+ """Shutdown block devices of an instance.
+
+ This function checks if an instance is running, before calling
+ _ShutdownInstanceDisks.
+
+ """
+ ins_l = rpc.call_instance_list([instance.primary_node])
+ ins_l = ins_l[instance.primary_node]
+ if not type(ins_l) is list:
+ raise errors.OpExecError("Can't contact node '%s'" %
+ instance.primary_node)
+
+ if instance.name in ins_l:
+ raise errors.OpExecError("Instance is running, can't shutdown"
+ " block devices.")
+
+ _ShutdownInstanceDisks(instance, cfg)
def _ShutdownInstanceDisks(instance, cfg, ignore_primary=False):
def ExpandNames(self):
self._ExpandAndLockInstance()
self.needed_locks[locking.LEVEL_NODE] = []
- self.recalculate_locks[locking.LEVEL_NODE] = 'replace'
+ self.recalculate_locks[locking.LEVEL_NODE] = constants.LOCKS_REPLACE
def DeclareLocks(self, level):
if level == locking.LEVEL_NODE:
constants.INSTANCE_REBOOT_FULL))
self._ExpandAndLockInstance()
self.needed_locks[locking.LEVEL_NODE] = []
- self.recalculate_locks[locking.LEVEL_NODE] = 'replace'
+ self.recalculate_locks[locking.LEVEL_NODE] = constants.LOCKS_REPLACE
def DeclareLocks(self, level):
if level == locking.LEVEL_NODE:
- # FIXME: lock only primary on (not constants.INSTANCE_REBOOT_FULL)
- self._LockInstancesNodes()
+ primary_only = not constants.INSTANCE_REBOOT_FULL
+ self._LockInstancesNodes(primary_only=primary_only)
def BuildHooksEnv(self):
"""Build hooks env.
def ExpandNames(self):
self._ExpandAndLockInstance()
self.needed_locks[locking.LEVEL_NODE] = []
- self.recalculate_locks[locking.LEVEL_NODE] = 'replace'
+ self.recalculate_locks[locking.LEVEL_NODE] = constants.LOCKS_REPLACE
def DeclareLocks(self, level):
if level == locking.LEVEL_NODE:
def ExpandNames(self):
self._ExpandAndLockInstance()
self.needed_locks[locking.LEVEL_NODE] = []
- self.recalculate_locks[locking.LEVEL_NODE] = 'replace'
+ self.recalculate_locks[locking.LEVEL_NODE] = constants.LOCKS_REPLACE
def DeclareLocks(self, level):
if level == locking.LEVEL_NODE:
if self.op.os_type is not None:
feedback_fn("Changing OS to '%s'..." % self.op.os_type)
inst.os = self.op.os_type
- self.cfg.AddInstance(inst)
+ self.cfg.Update(inst)
_StartInstanceDisks(self.cfg, inst, None)
try:
HPATH = "instance-remove"
HTYPE = constants.HTYPE_INSTANCE
_OP_REQP = ["instance_name", "ignore_failures"]
+ REQ_BGL = False
+
+ def ExpandNames(self):
+ self._ExpandAndLockInstance()
+ self.needed_locks[locking.LEVEL_NODE] = []
+ self.recalculate_locks[locking.LEVEL_NODE] = constants.LOCKS_REPLACE
+
+ def DeclareLocks(self, level):
+ if level == locking.LEVEL_NODE:
+ self._LockInstancesNodes()
def BuildHooksEnv(self):
"""Build hooks env.
This checks that the instance is in the cluster.
"""
- instance = self.cfg.GetInstanceInfo(
- self.cfg.ExpandInstanceName(self.op.instance_name))
- if instance is None:
- raise errors.OpPrereqError("Instance '%s' not known" %
- self.op.instance_name)
- self.instance = instance
+ self.instance = self.cfg.GetInstanceInfo(self.op.instance_name)
+ assert self.instance is not None, \
+ "Cannot retrieve locked instance %s" % self.op.instance_name
def Exec(self, feedback_fn):
"""Remove the instance.
logger.Info("removing instance %s out of cluster config" % instance.name)
self.cfg.RemoveInstance(instance.name)
- # Remove the new instance from the Ganeti Lock Manager
- self.context.glm.remove(locking.LEVEL_INSTANCE, instance.name)
+ self.remove_locks[locking.LEVEL_INSTANCE] = instance.name
class LUQueryInstances(NoHooksLU):
def ExpandNames(self):
self.dynamic_fields = frozenset(["oper_state", "oper_ram", "status"])
- _CheckOutputFields(static=["name", "os", "pnode", "snodes",
- "admin_state", "admin_ram",
- "disk_template", "ip", "mac", "bridge",
- "sda_size", "sdb_size", "vcpus", "tags",
- "auto_balance",
- "network_port", "kernel_path", "initrd_path",
- "hvm_boot_order", "hvm_acpi", "hvm_pae",
- "hvm_cdrom_image_path", "hvm_nic_type",
- "hvm_disk_type", "vnc_bind_address"],
+ self.static_fields = frozenset([
+ "name", "os", "pnode", "snodes",
+ "admin_state", "admin_ram",
+ "disk_template", "ip", "mac", "bridge",
+ "sda_size", "sdb_size", "vcpus", "tags",
+ "network_port", "kernel_path", "initrd_path",
+ "hvm_boot_order", "hvm_acpi", "hvm_pae",
+ "hvm_cdrom_image_path", "hvm_nic_type",
+ "hvm_disk_type", "vnc_bind_address",
+ "serial_no",
+ ])
+ _CheckOutputFields(static=self.static_fields,
dynamic=self.dynamic_fields,
selected=self.op.output_fields)
self.share_locks[locking.LEVEL_INSTANCE] = 1
self.share_locks[locking.LEVEL_NODE] = 1
- # TODO: we could lock instances (and nodes) only if the user asked for
- # dynamic fields. For that we need atomic ways to get info for a group of
- # instances from the config, though.
- if not self.op.names:
- self.needed_locks[locking.LEVEL_INSTANCE] = None # Acquire all
+ if self.op.names:
+ self.wanted = _GetWantedInstances(self, self.op.names)
else:
- self.needed_locks[locking.LEVEL_INSTANCE] = \
- _GetWantedInstances(self, self.op.names)
+ self.wanted = locking.ALL_SET
- self.needed_locks[locking.LEVEL_NODE] = []
- self.recalculate_locks[locking.LEVEL_NODE] = 'replace'
+ self.do_locking = not self.static_fields.issuperset(self.op.output_fields)
+ if self.do_locking:
+ self.needed_locks[locking.LEVEL_INSTANCE] = self.wanted
+ self.needed_locks[locking.LEVEL_NODE] = []
+ self.recalculate_locks[locking.LEVEL_NODE] = constants.LOCKS_REPLACE
def DeclareLocks(self, level):
- # TODO: locking of nodes could be avoided when not querying them
- if level == locking.LEVEL_NODE:
+ if level == locking.LEVEL_NODE and self.do_locking:
self._LockInstancesNodes()
def CheckPrereq(self):
"""Check prerequisites.
"""
- # This of course is valid only if we locked the instances
- self.wanted = self.acquired_locks[locking.LEVEL_INSTANCE]
+ pass
def Exec(self, feedback_fn):
"""Computes the list of nodes and their attributes.
"""
- instance_names = self.wanted
- instance_list = [self.cfg.GetInstanceInfo(iname) for iname
- in instance_names]
+ all_info = self.cfg.GetAllInstancesInfo()
+ if self.do_locking:
+ instance_names = self.acquired_locks[locking.LEVEL_INSTANCE]
+ elif self.wanted != locking.ALL_SET:
+ instance_names = self.wanted
+ missing = set(instance_names).difference(all_info.keys())
+ if missing:
+ raise self.OpExecError(
+ "Some instances were removed before retrieving their data: %s"
+ % missing)
+ else:
+ instance_names = all_info.keys()
+ instance_list = [all_info[iname] for iname in instance_names]
# begin data gathering
val = instance.vcpus
elif field == "tags":
val = list(instance.GetTags())
+ elif field == "serial_no":
+ val = instance.serial_no
elif field in ("network_port", "kernel_path", "initrd_path",
"hvm_boot_order", "hvm_acpi", "hvm_pae",
"hvm_cdrom_image_path", "hvm_nic_type",
def ExpandNames(self):
self._ExpandAndLockInstance()
self.needed_locks[locking.LEVEL_NODE] = []
- self.recalculate_locks[locking.LEVEL_NODE] = 'replace'
+ self.recalculate_locks[locking.LEVEL_NODE] = constants.LOCKS_REPLACE
def DeclareLocks(self, level):
if level == locking.LEVEL_NODE:
return results
-def _GenerateDRBD8Branch(cfg, primary, secondary, size, names, iv_name):
+def _GenerateDRBD8Branch(cfg, primary, secondary, size, names, iv_name,
+ p_minor, s_minor):
"""Generate a drbd8 device complete with its children.
"""
dev_meta = objects.Disk(dev_type=constants.LD_LV, size=128,
logical_id=(vgname, names[1]))
drbd_dev = objects.Disk(dev_type=constants.LD_DRBD8, size=size,
- logical_id = (primary, secondary, port),
- children = [dev_data, dev_meta],
+ logical_id=(primary, secondary, port,
+ p_minor, s_minor),
+ children=[dev_data, dev_meta],
iv_name=iv_name)
return drbd_dev
if len(secondary_nodes) != 1:
raise errors.ProgrammerError("Wrong template configuration")
remote_node = secondary_nodes[0]
+ (minor_pa, minor_pb,
+ minor_sa, minor_sb) = cfg.AllocateDRBDMinor(
+ [primary_node, primary_node, remote_node, remote_node], instance_name)
+
names = _GenerateUniqueNames(cfg, [".sda_data", ".sda_meta",
".sdb_data", ".sdb_meta"])
drbd_sda_dev = _GenerateDRBD8Branch(cfg, primary_node, remote_node,
- disk_sz, names[0:2], "sda")
+ disk_sz, names[0:2], "sda",
+ minor_pa, minor_sa)
drbd_sdb_dev = _GenerateDRBD8Branch(cfg, primary_node, remote_node,
- swap_sz, names[2:4], "sdb")
+ swap_sz, names[2:4], "sdb",
+ minor_pb, minor_sb)
disks = [drbd_sda_dev, drbd_sdb_dev]
elif template_name == constants.DT_FILE:
if len(secondary_nodes) != 0:
_OP_REQP = ["instance_name", "mem_size", "disk_size",
"disk_template", "swap_size", "mode", "start", "vcpus",
"wait_for_sync", "ip_check", "mac"]
+ REQ_BGL = False
+
+ def _ExpandNode(self, node):
+ """Expands and checks one node name.
+
+ """
+ node_full = self.cfg.ExpandNodeName(node)
+ if node_full is None:
+ raise errors.OpPrereqError("Unknown node %s" % node)
+ return node_full
+
+ def ExpandNames(self):
+ """ExpandNames for CreateInstance.
+
+ Figure out the right locks for instance creation.
+
+ """
+ self.needed_locks = {}
+
+ # set optional parameters to none if they don't exist
+ for attr in ["kernel_path", "initrd_path", "pnode", "snode",
+ "iallocator", "hvm_boot_order", "hvm_acpi", "hvm_pae",
+ "hvm_cdrom_image_path", "hvm_nic_type", "hvm_disk_type",
+ "vnc_bind_address"]:
+ if not hasattr(self.op, attr):
+ setattr(self.op, attr, None)
+
+ # verify creation mode
+ if self.op.mode not in (constants.INSTANCE_CREATE,
+ constants.INSTANCE_IMPORT):
+ raise errors.OpPrereqError("Invalid instance creation mode '%s'" %
+ self.op.mode)
+ # disk template and mirror node verification
+ if self.op.disk_template not in constants.DISK_TEMPLATES:
+ raise errors.OpPrereqError("Invalid disk template name")
+
+ #### instance parameters check
+
+ # instance name verification
+ hostname1 = utils.HostInfo(self.op.instance_name)
+ self.op.instance_name = instance_name = hostname1.name
+
+ # this is just a preventive check, but someone might still add this
+ # instance in the meantime, and creation will fail at lock-add time
+ if instance_name in self.cfg.GetInstanceList():
+ raise errors.OpPrereqError("Instance '%s' is already in the cluster" %
+ instance_name)
+
+ self.add_locks[locking.LEVEL_INSTANCE] = instance_name
+
+ # ip validity checks
+ ip = getattr(self.op, "ip", None)
+ if ip is None or ip.lower() == "none":
+ inst_ip = None
+ elif ip.lower() == "auto":
+ inst_ip = hostname1.ip
+ else:
+ if not utils.IsValidIP(ip):
+ raise errors.OpPrereqError("given IP address '%s' doesn't look"
+ " like a valid IP" % ip)
+ inst_ip = ip
+ self.inst_ip = self.op.ip = inst_ip
+ # used in CheckPrereq for ip ping check
+ self.check_ip = hostname1.ip
+
+ # MAC address verification
+ if self.op.mac != "auto":
+ if not utils.IsValidMac(self.op.mac.lower()):
+ raise errors.OpPrereqError("invalid MAC address specified: %s" %
+ self.op.mac)
+
+ # boot order verification
+ if self.op.hvm_boot_order is not None:
+ if len(self.op.hvm_boot_order.strip("acdn")) != 0:
+ raise errors.OpPrereqError("invalid boot order specified,"
+ " must be one or more of [acdn]")
+ # file storage checks
+ if (self.op.file_driver and
+ not self.op.file_driver in constants.FILE_DRIVER):
+ raise errors.OpPrereqError("Invalid file driver name '%s'" %
+ self.op.file_driver)
+
+ if self.op.file_storage_dir and os.path.isabs(self.op.file_storage_dir):
+ raise errors.OpPrereqError("File storage directory path not absolute")
+
+ ### Node/iallocator related checks
+ if [self.op.iallocator, self.op.pnode].count(None) != 1:
+ raise errors.OpPrereqError("One and only one of iallocator and primary"
+ " node must be given")
+
+ if self.op.iallocator:
+ self.needed_locks[locking.LEVEL_NODE] = locking.ALL_SET
+ else:
+ self.op.pnode = self._ExpandNode(self.op.pnode)
+ nodelist = [self.op.pnode]
+ if self.op.snode is not None:
+ self.op.snode = self._ExpandNode(self.op.snode)
+ nodelist.append(self.op.snode)
+ self.needed_locks[locking.LEVEL_NODE] = nodelist
+
+ # in case of import lock the source node too
+ if self.op.mode == constants.INSTANCE_IMPORT:
+ src_node = getattr(self.op, "src_node", None)
+ src_path = getattr(self.op, "src_path", None)
+
+ if src_node is None or src_path is None:
+ raise errors.OpPrereqError("Importing an instance requires source"
+ " node and path options")
+
+ if not os.path.isabs(src_path):
+ raise errors.OpPrereqError("The source path must be absolute")
+
+ self.op.src_node = src_node = self._ExpandNode(src_node)
+ if self.needed_locks[locking.LEVEL_NODE] is not locking.ALL_SET:
+ self.needed_locks[locking.LEVEL_NODE].append(src_node)
+
+ else: # INSTANCE_CREATE
+ if getattr(self.op, "os_type", None) is None:
+ raise errors.OpPrereqError("No guest OS specified")
def _RunAllocator(self):
"""Run the allocator based on input opcode.
if len(ial.nodes) != ial.required_nodes:
raise errors.OpPrereqError("iallocator '%s' returned invalid number"
" of nodes (%s), required %s" %
- (len(ial.nodes), ial.required_nodes))
+ (self.op.iallocator, len(ial.nodes),
+ ial.required_nodes))
self.op.pnode = ial.nodes[0]
logger.ToStdout("Selected nodes for the instance: %s" %
(", ".join(ial.nodes),))
"""Check prerequisites.
"""
- # set optional parameters to none if they don't exist
- for attr in ["kernel_path", "initrd_path", "hvm_boot_order", "pnode",
- "iallocator", "hvm_acpi", "hvm_pae", "hvm_cdrom_image_path",
- "hvm_nic_type", "hvm_disk_type", "vnc_bind_address"]:
- if not hasattr(self.op, attr):
- setattr(self.op, attr, None)
-
- if self.op.mode not in (constants.INSTANCE_CREATE,
- constants.INSTANCE_IMPORT):
- raise errors.OpPrereqError("Invalid instance creation mode '%s'" %
- self.op.mode)
-
if (not self.cfg.GetVGName() and
self.op.disk_template not in constants.DTS_NOT_LVM):
raise errors.OpPrereqError("Cluster does not support lvm-based"
" instances")
if self.op.mode == constants.INSTANCE_IMPORT:
- src_node = getattr(self.op, "src_node", None)
- src_path = getattr(self.op, "src_path", None)
- if src_node is None or src_path is None:
- raise errors.OpPrereqError("Importing an instance requires source"
- " node and path options")
- src_node_full = self.cfg.ExpandNodeName(src_node)
- if src_node_full is None:
- raise errors.OpPrereqError("Unknown source node '%s'" % src_node)
- self.op.src_node = src_node = src_node_full
-
- if not os.path.isabs(src_path):
- raise errors.OpPrereqError("The source path must be absolute")
+ src_node = self.op.src_node
+ src_path = self.op.src_path
export_info = rpc.call_export_info(src_node, src_path)
diskimage = os.path.join(src_path, export_info.get(constants.INISECT_INS,
'disk0_dump'))
self.src_image = diskimage
- else: # INSTANCE_CREATE
- if getattr(self.op, "os_type", None) is None:
- raise errors.OpPrereqError("No guest OS specified")
-
- #### instance parameters check
-
- # disk template and mirror node verification
- if self.op.disk_template not in constants.DISK_TEMPLATES:
- raise errors.OpPrereqError("Invalid disk template name")
-
- # instance name verification
- hostname1 = utils.HostInfo(self.op.instance_name)
- self.op.instance_name = instance_name = hostname1.name
- instance_list = self.cfg.GetInstanceList()
- if instance_name in instance_list:
- raise errors.OpPrereqError("Instance '%s' is already in the cluster" %
- instance_name)
-
- # ip validity checks
- ip = getattr(self.op, "ip", None)
- if ip is None or ip.lower() == "none":
- inst_ip = None
- elif ip.lower() == "auto":
- inst_ip = hostname1.ip
- else:
- if not utils.IsValidIP(ip):
- raise errors.OpPrereqError("given IP address '%s' doesn't look"
- " like a valid IP" % ip)
- inst_ip = ip
- self.inst_ip = self.op.ip = inst_ip
+ # ip ping checks (we use the same ip that was resolved in ExpandNames)
if self.op.start and not self.op.ip_check:
raise errors.OpPrereqError("Cannot ignore IP address conflicts when"
" adding an instance in start mode")
if self.op.ip_check:
- if utils.TcpPing(hostname1.ip, constants.DEFAULT_NODED_PORT):
+ if utils.TcpPing(self.check_ip, constants.DEFAULT_NODED_PORT):
raise errors.OpPrereqError("IP %s of instance %s already in use" %
- (hostname1.ip, instance_name))
-
- # MAC address verification
- if self.op.mac != "auto":
- if not utils.IsValidMac(self.op.mac.lower()):
- raise errors.OpPrereqError("invalid MAC address specified: %s" %
- self.op.mac)
+ (self.check_ip, instance_name))
# bridge verification
bridge = getattr(self.op, "bridge", None)
else:
self.op.bridge = bridge
- # boot order verification
- if self.op.hvm_boot_order is not None:
- if len(self.op.hvm_boot_order.strip("acdn")) != 0:
- raise errors.OpPrereqError("invalid boot order specified,"
- " must be one or more of [acdn]")
- # file storage checks
- if (self.op.file_driver and
- not self.op.file_driver in constants.FILE_DRIVER):
- raise errors.OpPrereqError("Invalid file driver name '%s'" %
- self.op.file_driver)
-
- if self.op.file_storage_dir and os.path.isabs(self.op.file_storage_dir):
- raise errors.OpPrereqError("File storage directory not a relative"
- " path")
#### allocator run
- if [self.op.iallocator, self.op.pnode].count(None) != 1:
- raise errors.OpPrereqError("One and only one of iallocator and primary"
- " node must be given")
-
if self.op.iallocator is not None:
self._RunAllocator()
#### node related checks
# check primary node
- pnode = self.cfg.GetNodeInfo(self.cfg.ExpandNodeName(self.op.pnode))
- if pnode is None:
- raise errors.OpPrereqError("Primary node '%s' is unknown" %
- self.op.pnode)
- self.op.pnode = pnode.name
- self.pnode = pnode
+ self.pnode = pnode = self.cfg.GetNodeInfo(self.op.pnode)
+ assert self.pnode is not None, \
+ "Cannot retrieve locked node %s" % self.op.pnode
self.secondaries = []
# mirror node verification
if self.op.disk_template in constants.DTS_NET_MIRROR:
- if getattr(self.op, "snode", None) is None:
+ if self.op.snode is None:
raise errors.OpPrereqError("The networked disk templates need"
" a mirror node")
-
- snode_name = self.cfg.ExpandNodeName(self.op.snode)
- if snode_name is None:
- raise errors.OpPrereqError("Unknown secondary node '%s'" %
- self.op.snode)
- elif snode_name == pnode.name:
+ if self.op.snode == pnode.name:
raise errors.OpPrereqError("The secondary node cannot be"
" the primary node.")
- self.secondaries.append(snode_name)
+ self.secondaries.append(self.op.snode)
req_size = _ComputeDiskSize(self.op.disk_template,
self.op.disk_size, self.op.swap_size)
if self.op.kernel_path == constants.VALUE_NONE:
raise errors.OpPrereqError("Can't set instance kernel to none")
-
# bridge check on primary node
if not rpc.call_bridges_exist(self.pnode.name, [self.op.bridge]):
raise errors.OpPrereqError("target bridge '%s' does not exist on"
# hvm_cdrom_image_path verification
if self.op.hvm_cdrom_image_path is not None:
+ # FIXME (als): shouldn't these checks happen on the destination node?
if not os.path.isabs(self.op.hvm_cdrom_image_path):
raise errors.OpPrereqError("The path to the HVM CDROM image must"
" be an absolute path or None, not %s" %
feedback_fn("* creating instance disks...")
if not _CreateDisks(self.cfg, iobj):
_RemoveDisks(iobj, self.cfg)
+ self.cfg.ReleaseDRBDMinors(instance)
raise errors.OpExecError("Device creation failed, reverting...")
feedback_fn("adding instance %s to cluster config" % instance)
self.cfg.AddInstance(iobj)
- # Add the new instance to the Ganeti Lock Manager
- self.context.glm.add(locking.LEVEL_INSTANCE, instance)
+ # Declare that we don't want to remove the instance lock anymore, as we've
+ # added the instance to the config
+ del self.remove_locks[locking.LEVEL_INSTANCE]
+ # Remove the temp. assignements for the instance's drbds
+ self.cfg.ReleaseDRBDMinors(instance)
if self.op.wait_for_sync:
disk_abort = not _WaitForSync(self.cfg, iobj, self.proc)
if disk_abort:
_RemoveDisks(iobj, self.cfg)
self.cfg.RemoveInstance(iobj.name)
- # Remove the new instance from the Ganeti Lock Manager
- self.context.glm.remove(locking.LEVEL_INSTANCE, iobj.name)
+ # Make sure the instance lock gets removed
+ self.remove_locks[locking.LEVEL_INSTANCE] = iobj.name
raise errors.OpExecError("There are some degraded disks for"
" this instance")
HPATH = "mirrors-replace"
HTYPE = constants.HTYPE_INSTANCE
_OP_REQP = ["instance_name", "mode", "disks"]
+ REQ_BGL = False
+
+ def ExpandNames(self):
+ self._ExpandAndLockInstance()
+
+ if not hasattr(self.op, "remote_node"):
+ self.op.remote_node = None
+
+ ia_name = getattr(self.op, "iallocator", None)
+ if ia_name is not None:
+ if self.op.remote_node is not None:
+ raise errors.OpPrereqError("Give either the iallocator or the new"
+ " secondary, not both")
+ self.needed_locks[locking.LEVEL_NODE] = locking.ALL_SET
+ elif self.op.remote_node is not None:
+ remote_node = self.cfg.ExpandNodeName(self.op.remote_node)
+ if remote_node is None:
+ raise errors.OpPrereqError("Node '%s' not known" %
+ self.op.remote_node)
+ self.op.remote_node = remote_node
+ self.needed_locks[locking.LEVEL_NODE] = [remote_node]
+ self.recalculate_locks[locking.LEVEL_NODE] = constants.LOCKS_APPEND
+ else:
+ self.needed_locks[locking.LEVEL_NODE] = []
+ self.recalculate_locks[locking.LEVEL_NODE] = constants.LOCKS_REPLACE
+
+ def DeclareLocks(self, level):
+ # If we're not already locking all nodes in the set we have to declare the
+ # instance's primary/secondary nodes.
+ if (level == locking.LEVEL_NODE and
+ self.needed_locks[locking.LEVEL_NODE] is not locking.ALL_SET):
+ self._LockInstancesNodes()
def _RunAllocator(self):
"""Compute a new secondary node using an IAllocator.
This checks that the instance is in the cluster.
"""
- if not hasattr(self.op, "remote_node"):
- self.op.remote_node = None
-
- instance = self.cfg.GetInstanceInfo(
- self.cfg.ExpandInstanceName(self.op.instance_name))
- if instance is None:
- raise errors.OpPrereqError("Instance '%s' not known" %
- self.op.instance_name)
+ instance = self.cfg.GetInstanceInfo(self.op.instance_name)
+ assert instance is not None, \
+ "Cannot retrieve locked instance %s" % self.op.instance_name
self.instance = instance
- self.op.instance_name = instance.name
if instance.disk_template not in constants.DTS_NET_MIRROR:
raise errors.OpPrereqError("Instance's disk layout is not"
ia_name = getattr(self.op, "iallocator", None)
if ia_name is not None:
- if self.op.remote_node is not None:
- raise errors.OpPrereqError("Give either the iallocator or the new"
- " secondary, not both")
- self.op.remote_node = self._RunAllocator()
+ self._RunAllocator()
remote_node = self.op.remote_node
if remote_node is not None:
- remote_node = self.cfg.ExpandNodeName(remote_node)
- if remote_node is None:
- raise errors.OpPrereqError("Node '%s' not known" %
- self.op.remote_node)
self.remote_node_info = self.cfg.GetNodeInfo(remote_node)
+ assert self.remote_node_info is not None, \
+ "Cannot retrieve locked node %s" % remote_node
else:
self.remote_node_info = None
if remote_node == instance.primary_node:
if instance.FindDisk(name) is None:
raise errors.OpPrereqError("Disk '%s' not found for instance '%s'" %
(name, instance.name))
- self.op.remote_node = remote_node
def _ExecD8DiskOnly(self, feedback_fn):
"""Replace a disk on the primary or secondary for dbrd8.
" node '%s'" %
(new_lv.logical_id[1], new_node))
- iv_names[dev.iv_name] = (dev, dev.children)
+ # Step 4: dbrd minors and drbd setups changes
+ # after this, we must manually remove the drbd minors on both the
+ # error and the success paths
+ minors = cfg.AllocateDRBDMinor([new_node for dev in instance.disks],
+ instance.name)
+ logging.debug("Allocated minors %s" % (minors,))
self.proc.LogStep(4, steps_total, "changing drbd configuration")
- for dev in instance.disks:
+ for dev, new_minor in zip(instance.disks, minors):
size = dev.size
info("activating a new drbd on %s for %s" % (new_node, dev.iv_name))
# create new devices on new_node
+ if pri_node == dev.logical_id[0]:
+ new_logical_id = (pri_node, new_node,
+ dev.logical_id[2], dev.logical_id[3], new_minor)
+ else:
+ new_logical_id = (new_node, pri_node,
+ dev.logical_id[2], new_minor, dev.logical_id[4])
+ iv_names[dev.iv_name] = (dev, dev.children, new_logical_id)
+ logging.debug("Allocated new_minor: %s, new_logical_id: %s", new_minor,
+ new_logical_id)
new_drbd = objects.Disk(dev_type=constants.LD_DRBD8,
- logical_id=(pri_node, new_node,
- dev.logical_id[2]),
+ logical_id=new_logical_id,
children=dev.children)
if not _CreateBlockDevOnSecondary(cfg, new_node, instance,
new_drbd, False,
_GetInstanceInfoText(instance)):
+ self.cfg.ReleaseDRBDMinors(instance.name)
raise errors.OpExecError("Failed to create new DRBD on"
" node '%s'" % new_node)
cfg.SetDiskID(dev, pri_node)
# set the physical (unique in bdev terms) id to None, meaning
# detach from network
- dev.physical_id = (None,) * len(dev.physical_id)
+ dev.physical_id = (None, None, None, None, dev.physical_id[4])
# and 'find' the device, which will 'fix' it to match the
# standalone state
if rpc.call_blockdev_find(pri_node, dev):
if not done:
# no detaches succeeded (very unlikely)
+ self.cfg.ReleaseDRBDMinors(instance.name)
raise errors.OpExecError("Can't detach at least one DRBD from old node")
# if we managed to detach at least one, we update all the disks of
# the instance to point to the new secondary
info("updating instance configuration")
- for dev in instance.disks:
- dev.logical_id = (pri_node, new_node) + dev.logical_id[2:]
+ for dev, _, new_logical_id in iv_names.itervalues():
+ dev.logical_id = new_logical_id
cfg.SetDiskID(dev, pri_node)
cfg.Update(instance)
+ # we can remove now the temp minors as now the new values are
+ # written to the config file (and therefore stable)
+ self.cfg.ReleaseDRBDMinors(instance.name)
# and now perform the drbd attach
info("attaching primary drbds to new secondary (standalone => connected)")
# it will automatically activate the network, if the physical_id
# is correct
cfg.SetDiskID(dev, pri_node)
+ logging.debug("Disk to attach: %s", dev)
if not rpc.call_blockdev_find(pri_node, dev):
warning("can't attach drbd %s to new secondary!" % dev.iv_name,
"please do a gnt-instance info to see the status of disks")
_WaitForSync(cfg, instance, self.proc, unlock=True)
# so check manually all the devices
- for name, (dev, old_lvs) in iv_names.iteritems():
+ for name, (dev, old_lvs, _) in iv_names.iteritems():
cfg.SetDiskID(dev, pri_node)
is_degr = rpc.call_blockdev_find(pri_node, dev)[5]
if is_degr:
raise errors.OpExecError("DRBD device %s is degraded!" % name)
self.proc.LogStep(6, steps_total, "removing old storage")
- for name, (dev, old_lvs) in iv_names.iteritems():
+ for name, (dev, old_lvs, _) in iv_names.iteritems():
info("remove logical volumes for %s" % name)
for lv in old_lvs:
cfg.SetDiskID(lv, old_node)
# Activate the instance disks if we're replacing them on a down instance
if instance.status == "down":
- op = opcodes.OpActivateInstanceDisks(instance_name=instance.name)
- self.proc.ChainOpCode(op)
+ _StartInstanceDisks(self.cfg, instance, True)
if instance.disk_template == constants.DT_DRBD8:
if self.op.remote_node is None:
# Deactivate the instance disks if we're replacing them on a down instance
if instance.status == "down":
- op = opcodes.OpDeactivateInstanceDisks(instance_name=instance.name)
- self.proc.ChainOpCode(op)
+ _SafeShutdownInstanceDisks(instance, self.cfg)
return ret
HPATH = "disk-grow"
HTYPE = constants.HTYPE_INSTANCE
_OP_REQP = ["instance_name", "disk", "amount"]
+ REQ_BGL = False
+
+ def ExpandNames(self):
+ self._ExpandAndLockInstance()
+ self.needed_locks[locking.LEVEL_NODE] = []
+ self.recalculate_locks[locking.LEVEL_NODE] = constants.LOCKS_REPLACE
+
+ def DeclareLocks(self, level):
+ if level == locking.LEVEL_NODE:
+ self._LockInstancesNodes()
def BuildHooksEnv(self):
"""Build hooks env.
This checks that the instance is in the cluster.
"""
- instance = self.cfg.GetInstanceInfo(
- self.cfg.ExpandInstanceName(self.op.instance_name))
- if instance is None:
- raise errors.OpPrereqError("Instance '%s' not known" %
- self.op.instance_name)
+ instance = self.cfg.GetInstanceInfo(self.op.instance_name)
+ assert instance is not None, \
+ "Cannot retrieve locked instance %s" % self.op.instance_name
+
self.instance = instance
- self.op.instance_name = instance.name
if instance.disk_template not in (constants.DT_PLAIN, constants.DT_DRBD8):
raise errors.OpPrereqError("Instance's disk layout does not support"
for node in (instance.secondary_nodes + (instance.primary_node,)):
self.cfg.SetDiskID(disk, node)
result = rpc.call_blockdev_grow(node, disk, self.op.amount)
- if not result or not isinstance(result, tuple) or len(result) != 2:
+ if not result or not isinstance(result, (list, tuple)) or len(result) != 2:
raise errors.OpExecError("grow request failed to node %s" % node)
elif not result[0]:
raise errors.OpExecError("grow request failed to node %s: %s" %
"""
_OP_REQP = ["instances"]
+ REQ_BGL = False
+ def ExpandNames(self):
+ self.needed_locks = {}
+ self.share_locks = dict(((i, 1) for i in locking.LEVELS))
+
+ if not isinstance(self.op.instances, list):
+ raise errors.OpPrereqError("Invalid argument type 'instances'")
+
+ if self.op.instances:
+ self.wanted_names = []
+ for name in self.op.instances:
+ full_name = self.cfg.ExpandInstanceName(name)
+ if full_name is None:
+ raise errors.OpPrereqError("Instance '%s' not known" %
+ self.op.instance_name)
+ self.wanted_names.append(full_name)
+ self.needed_locks[locking.LEVEL_INSTANCE] = self.wanted_names
+ else:
+ self.wanted_names = None
+ self.needed_locks[locking.LEVEL_INSTANCE] = locking.ALL_SET
+
+ self.needed_locks[locking.LEVEL_NODE] = []
+ self.recalculate_locks[locking.LEVEL_NODE] = constants.LOCKS_REPLACE
+
+ def DeclareLocks(self, level):
+ if level == locking.LEVEL_NODE:
+ self._LockInstancesNodes()
def CheckPrereq(self):
"""Check prerequisites.
This only checks the optional instance list against the existing names.
"""
- if not isinstance(self.op.instances, list):
- raise errors.OpPrereqError("Invalid argument type 'instances'")
- if self.op.instances:
- self.wanted_instances = []
- names = self.op.instances
- for name in names:
- instance = self.cfg.GetInstanceInfo(self.cfg.ExpandInstanceName(name))
- if instance is None:
- raise errors.OpPrereqError("No such instance name '%s'" % name)
- self.wanted_instances.append(instance)
- else:
- self.wanted_instances = [self.cfg.GetInstanceInfo(name) for name
- in self.cfg.GetInstanceList()]
- return
+ if self.wanted_names is None:
+ self.wanted_names = self.acquired_locks[locking.LEVEL_INSTANCE]
+ self.wanted_instances = [self.cfg.GetInstanceInfo(name) for name
+ in self.wanted_names]
+ return
def _ComputeDiskStatus(self, instance, snode, dev):
"""Compute block device status.
"""Query the exports list
"""
- _OP_REQP = []
+ _OP_REQP = ['nodes']
+ REQ_BGL = False
+
+ def ExpandNames(self):
+ self.needed_locks = {}
+ self.share_locks[locking.LEVEL_NODE] = 1
+ if not self.op.nodes:
+ self.needed_locks[locking.LEVEL_NODE] = locking.ALL_SET
+ else:
+ self.needed_locks[locking.LEVEL_NODE] = \
+ _GetWantedNodes(self, self.op.nodes)
def CheckPrereq(self):
- """Check that the nodelist contains only existing nodes.
+ """Check prerequisites.
"""
- self.nodes = _GetWantedNodes(self, getattr(self.op, "nodes", None))
+ self.nodes = self.acquired_locks[locking.LEVEL_NODE]
def Exec(self, feedback_fn):
"""Compute the list of all the exported system images.
HPATH = "instance-export"
HTYPE = constants.HTYPE_INSTANCE
_OP_REQP = ["instance_name", "target_node", "shutdown"]
+ REQ_BGL = False
+
+ def ExpandNames(self):
+ self._ExpandAndLockInstance()
+ # FIXME: lock only instance primary and destination node
+ #
+ # Sad but true, for now we have do lock all nodes, as we don't know where
+ # the previous export might be, and and in this LU we search for it and
+ # remove it from its current node. In the future we could fix this by:
+ # - making a tasklet to search (share-lock all), then create the new one,
+ # then one to remove, after
+ # - removing the removal operation altoghether
+ self.needed_locks[locking.LEVEL_NODE] = locking.ALL_SET
+
+ def DeclareLocks(self, level):
+ """Last minute lock declaration."""
+ # All nodes are locked anyway, so nothing to do here.
def BuildHooksEnv(self):
"""Build hooks env.
This checks that the instance and node names are valid.
"""
- instance_name = self.cfg.ExpandInstanceName(self.op.instance_name)
+ instance_name = self.op.instance_name
self.instance = self.cfg.GetInstanceInfo(instance_name)
- if self.instance is None:
- raise errors.OpPrereqError("Instance '%s' not found" %
- self.op.instance_name)
+ assert self.instance is not None, \
+ "Cannot retrieve locked instance %s" % self.op.instance_name
- # node verification
- dst_node_short = self.cfg.ExpandNodeName(self.op.target_node)
- self.dst_node = self.cfg.GetNodeInfo(dst_node_short)
+ self.dst_node = self.cfg.GetNodeInfo(
+ self.cfg.ExpandNodeName(self.op.target_node))
- if self.dst_node is None:
- raise errors.OpPrereqError("Destination node '%s' is unknown." %
- self.op.target_node)
- self.op.target_node = self.dst_node.name
+ assert self.dst_node is not None, \
+ "Cannot retrieve locked node %s" % self.op.target_node
# instance disk type verification
for disk in self.instance.disks:
# if we proceed the backup would be removed because OpQueryExports
# substitutes an empty list with the full cluster node list.
if nodelist:
- op = opcodes.OpQueryExports(nodes=nodelist)
- exportlist = self.proc.ChainOpCode(op)
+ exportlist = rpc.call_export_list(nodelist)
for node in exportlist:
if instance.name in exportlist[node]:
if not rpc.call_export_remove(node, instance.name):
"""
_OP_REQP = ["instance_name"]
+ REQ_BGL = False
+
+ def ExpandNames(self):
+ self.needed_locks = {}
+ # We need all nodes to be locked in order for RemoveExport to work, but we
+ # don't need to lock the instance itself, as nothing will happen to it (and
+ # we can remove exports also for a removed instance)
+ self.needed_locks[locking.LEVEL_NODE] = locking.ALL_SET
def CheckPrereq(self):
"""Check prerequisites.
fqdn_warn = True
instance_name = self.op.instance_name
- op = opcodes.OpQueryExports(nodes=[])
- exportlist = self.proc.ChainOpCode(op)
+ exportlist = rpc.call_export_list(self.acquired_locks[locking.LEVEL_NODE])
found = False
for node in exportlist:
if instance_name in exportlist[node]:
This is an abstract class which is the parent of all the other tags LUs.
"""
- def CheckPrereq(self):
- """Check prerequisites.
- """
- if self.op.kind == constants.TAG_CLUSTER:
- self.target = self.cfg.GetClusterInfo()
- elif self.op.kind == constants.TAG_NODE:
+ def ExpandNames(self):
+ self.needed_locks = {}
+ if self.op.kind == constants.TAG_NODE:
name = self.cfg.ExpandNodeName(self.op.name)
if name is None:
raise errors.OpPrereqError("Invalid node name (%s)" %
(self.op.name,))
self.op.name = name
- self.target = self.cfg.GetNodeInfo(name)
+ self.needed_locks[locking.LEVEL_NODE] = name
elif self.op.kind == constants.TAG_INSTANCE:
name = self.cfg.ExpandInstanceName(self.op.name)
if name is None:
raise errors.OpPrereqError("Invalid instance name (%s)" %
(self.op.name,))
self.op.name = name
- self.target = self.cfg.GetInstanceInfo(name)
+ self.needed_locks[locking.LEVEL_INSTANCE] = name
+
+ def CheckPrereq(self):
+ """Check prerequisites.
+
+ """
+ if self.op.kind == constants.TAG_CLUSTER:
+ self.target = self.cfg.GetClusterInfo()
+ elif self.op.kind == constants.TAG_NODE:
+ self.target = self.cfg.GetNodeInfo(self.op.name)
+ elif self.op.kind == constants.TAG_INSTANCE:
+ self.target = self.cfg.GetInstanceInfo(self.op.name)
else:
raise errors.OpPrereqError("Wrong tag type requested (%s)" %
str(self.op.kind))
"""
_OP_REQP = ["kind", "name"]
+ REQ_BGL = False
def Exec(self, feedback_fn):
"""Returns the tag list.
"""
_OP_REQP = ["pattern"]
+ REQ_BGL = False
+
+ def ExpandNames(self):
+ self.needed_locks = {}
def CheckPrereq(self):
"""Check prerequisites.
"""
cfg = self.cfg
tgts = [("/cluster", cfg.GetClusterInfo())]
- ilist = [cfg.GetInstanceInfo(name) for name in cfg.GetInstanceList()]
+ ilist = cfg.GetAllInstancesInfo().values()
tgts.extend([("/instances/%s" % i.name, i) for i in ilist])
- nlist = [cfg.GetNodeInfo(name) for name in cfg.GetNodeList()]
+ nlist = cfg.GetAllNodesInfo().values()
tgts.extend([("/nodes/%s" % n.name, n) for n in nlist])
results = []
for path, target in tgts:
"""
_OP_REQP = ["kind", "name", "tags"]
+ REQ_BGL = False
def CheckPrereq(self):
"""Check prerequisites.
"""
_OP_REQP = ["kind", "name", "tags"]
+ REQ_BGL = False
def CheckPrereq(self):
"""Check prerequisites.
result = call_fn(self.sstore.GetMasterNode(), name, self.in_text)
- if not isinstance(result, tuple) or len(result) != 4:
+ if not isinstance(result, (list, tuple)) or len(result) != 4:
raise errors.OpExecError("Invalid result from master iallocator runner")
rcode, stdout, stderr, fail = result
projects / ganeti-local / blobdiff