Public bug reported:
Reproduce:
* have a two node devstack hostA, hostB both with simple local storage
* start an instance on hostA
* inject a sleep in nova.virt.driver.rebuild to simulate that rebuild take time
* stop hostA
* evacuate the VM
* while the evacuation is still in progress on hostB start up hostA
Actual:
hostA will try to check if the VM is using shared storage and sends an RPC call
to the instance.host as that is not yet set to the destination the RPC call
hits hostA that is still in init_host so the RPC never answered and hostA'a
destroy_evacuated_instances call will get a MessagingTimeout exception. That is
logged and then ignored. But nova defaults the shared_storage flag to true so
in this case the local instance dir is not cleaned.
Expected:
hostA sends the RPC call to hostB that responds and the local instance dir on
hostkA is cleaned up.
** Affects: nova
Importance: Medium
Assignee: Balazs Gibizer (balazs-gibizer)
Status: New
** Tags: compute evacuate race-condition
** Changed in: nova
Assignee: (unassigned) => Balazs Gibizer (balazs-gibizer)
** Tags added: compute evacuate race-condition
** Changed in: nova
Importance: Undecided => Medium
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https://bugs.launchpad.net/bugs/2085975
Title:
Compute fails to clean up after evacuated instance if the evacuation
still in progress
Status in OpenStack Compute (nova):
New
Bug description:
Reproduce:
* have a two node devstack hostA, hostB both with simple local storage
* start an instance on hostA
* inject a sleep in nova.virt.driver.rebuild to simulate that rebuild take
time
* stop hostA
* evacuate the VM
* while the evacuation is still in progress on hostB start up hostA
Actual:
hostA will try to check if the VM is using shared storage and sends an RPC
call to the instance.host as that is not yet set to the destination the RPC
call hits hostA that is still in init_host so the RPC never answered and
hostA'a destroy_evacuated_instances call will get a MessagingTimeout exception.
That is logged and then ignored. But nova defaults the shared_storage flag to
true so in this case the local instance dir is not cleaned.
Expected:
hostA sends the RPC call to hostB that responds and the local instance dir on
hostkA is cleaned up.
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https://bugs.launchpad.net/nova/+bug/2085975/+subscriptions
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