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vm workload consolidation: allow cold migrations

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Although Watcher supports cold migrations, the vm workload
consolidation workflow only allows live migrations to be
performed.

We'll remove this unnecessary limitation so that stopped instances
could be cold migrated.

Change-Id: I4b41550f2255560febf8586722a0e02045c3a486
This commit is contained in:
Lucian Petrut
2023-10-10 15:47:14 +03:00
parent 922478fbda
commit 7336a48057
2 changed files with 35 additions and 37 deletions
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15
watcher/decision_engine/strategy/strategies/vm_workload_consolidation.py
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@@ -21,6 +21,7 @@
from oslo_log import log
from watcher._i18n import _
from watcher.applier.actions import migration
from watcher.common import exception
from watcher.decision_engine.model import element
from watcher.decision_engine.strategy.strategies import base
@@ -196,12 +197,12 @@ class VMWorkloadConsolidation(base.ServerConsolidationBaseStrategy):
:return: None
"""
instance_state_str = self.get_instance_state_str(instance)
if instance_state_str not in (element.InstanceState.ACTIVE.value,
element.InstanceState.PAUSED.value):
# Watcher currently only supports live VM migration and block live
# VM migration which both requires migrated VM to be active.
# When supported, the cold migration may be used as a fallback
# migration mechanism to move non active VMs.
if instance_state_str in (element.InstanceState.ACTIVE.value,
element.InstanceState.PAUSED.value):
migration_type = migration.Migrate.LIVE_MIGRATION
elif instance_state_str == element.InstanceState.STOPPED.value:
migration_type = migration.Migrate.COLD_MIGRATION
else:
LOG.error(
'Cannot live migrate: instance_uuid=%(instance_uuid)s, '
'state=%(instance_state)s.', dict(
@@ -209,8 +210,6 @@ class VMWorkloadConsolidation(base.ServerConsolidationBaseStrategy):
instance_state=instance_state_str))
return
migration_type = 'live'
# Here will makes repeated actions to enable the same compute node,
# when migrating VMs to the destination node which is disabled.
# Whether should we remove the same actions in the solution???