def ExpandNames(self):
"""Expand names and set required locks.
This expands the node list, if any.
"""
self.needed_locks = {}
if self.op.duration <= 0:
raise errors.OpPrereqError("Duration must be greater than zero")
if not self.op.no_locks and (self.op.on_nodes or self.op.on_master):
self.needed_locks[locking.LEVEL_NODE] = []
self.op.on_node_uuids = []
if self.op.on_nodes:
# _GetWantedNodes can be used here, but is not always appropriate to use
# this way in ExpandNames. Check LogicalUnit.ExpandNames docstring for
# more information.
(self.op.on_node_uuids, self.op.on_nodes) = \
GetWantedNodes(self, self.op.on_nodes)
master_uuid = self.cfg.GetMasterNode()
if self.op.on_master and master_uuid not in self.op.on_node_uuids:
self.op.on_node_uuids.append(master_uuid)
self.needed_locks = {}
self.needed_locks[locking.LEVEL_NODE] = self.op.on_node_uuids
def ExpandNames(self):
if self.op.nodes:
(self.op.node_uuids, self.op.nodes) = GetWantedNodes(self, self.op.nodes)
self.needed_locks = {
locking.LEVEL_NODE: self.op.node_uuids,
}
self.share_locks = {
locking.LEVEL_NODE: not self.op.use_locking,
}
def ExpandNames(self):
# These raise errors.OpPrereqError on their own:
self.group_uuid = self.cfg.LookupNodeGroup(self.op.group_name)
(self.op.node_uuids,
self.op.nodes) = GetWantedNodes(self, self.op.nodes)
# We want to lock all the affected nodes and groups. We have readily
# available the list of nodes, and the *destination* group. To gather the
# list of "source" groups, we need to fetch node information later on.
self.needed_locks = {
locking.LEVEL_NODEGROUP: set([self.group_uuid]),
locking.LEVEL_NODE: self.op.node_uuids,
}
def ExpandNames(self):
"""Gather locks we need.
"""
if self.op.node_names:
(self.op.node_uuids, self.op.node_names) = \
GetWantedNodes(self, self.op.node_names)
lock_node_uuids = self.op.node_uuids
else:
lock_node_uuids = locking.ALL_SET
self.needed_locks = {
locking.LEVEL_NODE: lock_node_uuids,
}
def ExpandNames(self):
"""Gather locks we need.
"""
if self.op.node_names:
(self.op.node_uuids, self.op.node_names) = \
GetWantedNodes(self, self.op.node_names)
lock_node_uuids = self.op.node_uuids
else:
lock_node_uuids = locking.ALL_SET
self.needed_locks = {
locking.LEVEL_NODE: lock_node_uuids,
}
self.share_locks[locking.LEVEL_NODE_ALLOC] = 1
if not self.op.node_names:
# Acquire node allocation lock only if all nodes are affected
self.needed_locks[locking.LEVEL_NODE_ALLOC] = locking.ALL_SET
def ExpandNames(self):
"""Expand names and set required locks.
This expands the node list, if any.
"""
self.needed_locks = {}
if self.op.on_nodes or self.op.on_master:
self.needed_locks[locking.LEVEL_NODE] = []
if self.op.on_nodes:
# _GetWantedNodes can be used here, but is not always appropriate to use
# this way in ExpandNames. Check LogicalUnit.ExpandNames docstring for
# more information.
(self.op.on_node_uuids, self.op.on_nodes) = \
GetWantedNodes(self, self.op.on_nodes)
self.needed_locks[locking.LEVEL_NODE].extend(self.op.on_node_uuids)
if self.op.on_master:
# The node lock should be acquired for the master as well.
self.needed_locks[locking.LEVEL_NODE].append(self.cfg.GetMasterNode())