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[Matt Riedemann <mriedem.os@xxxxxxxxx>]

** Summary changed:

- Instances recovered after failed migrations enter error state
+ Instances recovered after failed migrations enter error state (hyper-v)

** Tags added: live-migration

** Changed in: nova
   Importance: Undecided => Medium

** Also affects: nova/ocata
   Importance: Undecided
       Status: New

** Also affects: nova/stein
   Importance: Undecided
       Status: New

** Also affects: nova/rocky
   Importance: Undecided
       Status: New

** Also affects: nova/queens
   Importance: Undecided
       Status: New

** Also affects: nova/pike
   Importance: Undecided
       Status: New

** No longer affects: nova/ocata

** No longer affects: nova/pike

-- 
You received this bug notification because you are a member of Yahoo!
Engineering Team, which is subscribed to OpenStack Compute (nova).
https://bugs.launchpad.net/bugs/1841411

Title:
  Instances recovered after failed migrations enter error state
  (hyper-v)

Status in compute-hyperv:
  In Progress
Status in OpenStack Compute (nova):
  In Progress
Status in OpenStack Compute (nova) queens series:
  New
Status in OpenStack Compute (nova) rocky series:
  New
Status in OpenStack Compute (nova) stein series:
  New

Bug description:
  Most users expect that if a live migration fails but the instance is
  fully recovered, it shouldn't enter 'error' state. Setting the
  migration status to 'error' should be enough. This simplifies
  debugging, making it clear that the instance dosn't have to be
  manually recovered.

  This patch changed this behavior, indirectly affecting the Hyper-V
  driver, which propagates migration errors:
  Idfdce9e7dd8106af01db0358ada15737cb846395

  When using the Hyper-V driver, instances enter error state even after
  successful recoveries. We may copy the Libvirt driver behavior and
  avoid propagating exceptions in this case.

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