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[Bug 1921306] Re: When Instance is paused state, live migration failure.

To: yahoo-eng-team@xxxxxxxxxxxxxxxxxxx
From: Lee Yarwood <1921306@xxxxxxxxxxxxxxxxxx>
Date: Fri, 09 Jul 2021 10:00:46 -0000
Reply-to: Bug 1921306 <1921306@xxxxxxxxxxxxxxxxxx>
Sender: bounces@xxxxxxxxxxxxx
This smells like a known QEMU issue that we encountered in CI a while
ago causing the underlying guest to crash:

[QEMU] Back-n-forth live migration of a paused VM results in QEMU crash
with: "bdrv_inactivate_recurse: Assertion `!(bs->open_flags &
BDRV_O_INACTIVE)' failed."

https://bugzilla.redhat.com/show_bug.cgi?id=1713009

You should see the above error captured in the guest log under
/var/log/libvirt/qemu/$domain_name.log

Marking this bug as invalid for Nova but feel free to add the QEMU
project in assuming you're using the Ubuntu provided package.

** Bug watch added: Red Hat Bugzilla #1713009
   https://bugzilla.redhat.com/show_bug.cgi?id=1713009

** Changed in: nova
       Status: New => Invalid

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https://bugs.launchpad.net/bugs/1921306

Title:
  When Instance is paused state,live migration failure.

Status in OpenStack Compute (nova):
  Invalid

Bug description:
  When the virtual machine is in the paused state and continuously live
  migrated twice, the Instance state changes to ERROR. The version of
  nova is Rocky。

  2021-03-22 19:34:38.388 6 DEBUG nova.virt.libvirt.guest [- req-None - - - - -] Failed to get job stats: Unable to read from monitor: Connection reset by peer get_job_info /var/lib/kolla/venv/lib/python2.7/site-packages/nova/virt/libvirt/guest.py:767
  2021-03-22 19:34:38.389 6 WARNING nova.virt.libvirt.driver [- req-None - - - - -] [instance: d1d2af1f-e973-438c-a6b6-b628091d3596] Error monitoring migration: Unable to read from monitor: Connection reset by peer: libvirtError: Unable to read from monitor: Connection reset by peer
  2021-03-22 19:34:38.389 6 ERROR nova.virt.libvirt.driver [instance: d1d2af1f-e973-438c-a6b6-b628091d3596] Traceback (most recent call last):
  2021-03-22 19:34:38.389 6 ERROR nova.virt.libvirt.driver [instance: d1d2af1f-e973-438c-a6b6-b628091d3596]   File "/var/lib/kolla/venv/lib/python2.7/site-packages/nova/virt/libvirt/driver.py", line 7793, in _live_migration
  2021-03-22 19:34:38.389 6 ERROR nova.virt.libvirt.driver [instance: d1d2af1f-e973-438c-a6b6-b628091d3596]     finish_event, disk_paths)
  2021-03-22 19:34:38.389 6 ERROR nova.virt.libvirt.driver [instance: d1d2af1f-e973-438c-a6b6-b628091d3596]   File "/var/lib/kolla/venv/lib/python2.7/site-packages/nova/virt/libvirt/driver.py", line 7593, in _live_migration_monitor
  2021-03-22 19:34:38.389 6 ERROR nova.virt.libvirt.driver [instance: d1d2af1f-e973-438c-a6b6-b628091d3596]     info = guest.get_job_info()
  2021-03-22 19:34:38.389 6 ERROR nova.virt.libvirt.driver [instance: d1d2af1f-e973-438c-a6b6-b628091d3596]   File "/var/lib/kolla/venv/lib/python2.7/site-packages/nova/virt/libvirt/guest.py", line 751, in get_job_info
  2021-03-22 19:34:38.389 6 ERROR nova.virt.libvirt.driver [instance: d1d2af1f-e973-438c-a6b6-b628091d3596]     stats = self._domain.jobStats()
  2021-03-22 19:34:38.389 6 ERROR nova.virt.libvirt.driver [instance: d1d2af1f-e973-438c-a6b6-b628091d3596]   File "/var/lib/kolla/venv/lib/python2.7/site-packages/eventlet/tpool.py", line 186, in doit
  2021-03-22 19:34:38.389 6 ERROR nova.virt.libvirt.driver [instance: d1d2af1f-e973-438c-a6b6-b628091d3596]     result = proxy_call(self._autowrap, f, *args, **kwargs)
  2021-03-22 19:34:38.389 6 ERROR nova.virt.libvirt.driver [instance: d1d2af1f-e973-438c-a6b6-b628091d3596]   File "/var/lib/kolla/venv/lib/python2.7/site-packages/eventlet/tpool.py", line 144, in proxy_call
  2021-03-22 19:34:38.389 6 ERROR nova.virt.libvirt.driver [instance: d1d2af1f-e973-438c-a6b6-b628091d3596]     rv = execute(f, *args, **kwargs)
  2021-03-22 19:34:38.389 6 ERROR nova.virt.libvirt.driver [instance: d1d2af1f-e973-438c-a6b6-b628091d3596]   File "/var/lib/kolla/venv/lib/python2.7/site-packages/eventlet/tpool.py", line 125, in execute
  2021-03-22 19:34:38.389 6 ERROR nova.virt.libvirt.driver [instance: d1d2af1f-e973-438c-a6b6-b628091d3596]     six.reraise(c, e, tb)
  2021-03-22 19:34:38.389 6 ERROR nova.virt.libvirt.driver [instance: d1d2af1f-e973-438c-a6b6-b628091d3596]   File "/var/lib/kolla/venv/lib/python2.7/site-packages/eventlet/tpool.py", line 83, in tworker
  2021-03-22 19:34:38.389 6 ERROR nova.virt.libvirt.driver [instance: d1d2af1f-e973-438c-a6b6-b628091d3596]     rv = meth(*args, **kwargs)
  2021-03-22 19:34:38.389 6 ERROR nova.virt.libvirt.driver [instance: d1d2af1f-e973-438c-a6b6-b628091d3596]   File "/usr/lib64/python2.7/site-packages/libvirt.py", line 1433, in jobStats
  2021-03-22 19:34:38.389 6 ERROR nova.virt.libvirt.driver [instance: d1d2af1f-e973-438c-a6b6-b628091d3596]     if ret is None: raise libvirtError ('virDomainGetJobStats() failed', dom=self)
  2021-03-22 19:34:38.389 6 ERROR nova.virt.libvirt.driver [instance: d1d2af1f-e973-438c-a6b6-b628091d3596] libvirtError: Unable to read from monitor: Connection reset by peer
  2021-03-22 19:34:38.389 6 ERROR nova.virt.libvirt.driver [instance: d1d2af1f-e973-438c-a6b6-b628091d3596]
  2021-03-22 19:34:38.394 6 DEBUG nova.virt.libvirt.driver [- req-None - - - - -] [instance: d1d2af1f-e973-438c-a6b6-b628091d3596] Live migration monitoring is all done _live_migration /var/lib/kolla/venv/lib/python2.7/site-packages/nova/virt/libvirt/driver.py:7800
  2021-03-22 19:34:38.394 6 ERROR nova.compute.manager [- req-None - - - - -] [instance: d1d2af1f-e973-438c-a6b6-b628091d3596] Live migration failed.: libvirtError: Unable to read from monitor: Connection reset by peer
  2021-03-22 19:34:38.394 6 ERROR nova.compute.manager [instance: d1d2af1f-e973-438c-a6b6-b628091d3596] Traceback (most recent call last):
  2021-03-22 19:34:38.394 6 ERROR nova.compute.manager [instance: d1d2af1f-e973-438c-a6b6-b628091d3596]   File "/var/lib/kolla/venv/lib/python2.7/site-packages/nova/compute/manager.py", line 6510, in _do_live_migration
  2021-03-22 19:34:38.394 6 ERROR nova.compute.manager [instance: d1d2af1f-e973-438c-a6b6-b628091d3596]     block_migration, migrate_data)
  2021-03-22 19:34:38.394 6 ERROR nova.compute.manager [instance: d1d2af1f-e973-438c-a6b6-b628091d3596]   File "/var/lib/kolla/venv/lib/python2.7/site-packages/nova/virt/libvirt/driver.py", line 7279, in live_migration
  2021-03-22 19:34:38.394 6 ERROR nova.compute.manager [instance: d1d2af1f-e973-438c-a6b6-b628091d3596]     migrate_data)
  2021-03-22 19:34:38.394 6 ERROR nova.compute.manager [instance: d1d2af1f-e973-438c-a6b6-b628091d3596]   File "/var/lib/kolla/venv/lib/python2.7/site-packages/nova/virt/libvirt/driver.py", line 7793, in _live_migration
  2021-03-22 19:34:38.394 6 ERROR nova.compute.manager [instance: d1d2af1f-e973-438c-a6b6-b628091d3596]     finish_event, disk_paths)
  2021-03-22 19:34:38.394 6 ERROR nova.compute.manager [instance: d1d2af1f-e973-438c-a6b6-b628091d3596]   File "/var/lib/kolla/venv/lib/python2.7/site-packages/nova/virt/libvirt/driver.py", line 7593, in _live_migration_monitor
  2021-03-22 19:34:38.394 6 ERROR nova.compute.manager [instance: d1d2af1f-e973-438c-a6b6-b628091d3596]     info = guest.get_job_info()
  2021-03-22 19:34:38.394 6 ERROR nova.compute.manager [instance: d1d2af1f-e973-438c-a6b6-b628091d3596]   File "/var/lib/kolla/venv/lib/python2.7/site-packages/nova/virt/libvirt/guest.py", line 751, in get_job_info
  2021-03-22 19:34:38.394 6 ERROR nova.compute.manager [instance: d1d2af1f-e973-438c-a6b6-b628091d3596]     stats = self._domain.jobStats()
  2021-03-22 19:34:38.394 6 ERROR nova.compute.manager [instance: d1d2af1f-e973-438c-a6b6-b628091d3596]   File "/var/lib/kolla/venv/lib/python2.7/site-packages/eventlet/tpool.py", line 186, in doit
  2021-03-22 19:34:38.394 6 ERROR nova.compute.manager [instance: d1d2af1f-e973-438c-a6b6-b628091d3596]     result = proxy_call(self._autowrap, f, *args, **kwargs)
  2021-03-22 19:34:38.394 6 ERROR nova.compute.manager [instance: d1d2af1f-e973-438c-a6b6-b628091d3596]   File "/var/lib/kolla/venv/lib/python2.7/site-packages/eventlet/tpool.py", line 144, in proxy_call
  2021-03-22 19:34:38.394 6 ERROR nova.compute.manager [instance: d1d2af1f-e973-438c-a6b6-b628091d3596]     rv = execute(f, *args, **kwargs)
  2021-03-22 19:34:38.394 6 ERROR nova.compute.manager [instance: d1d2af1f-e973-438c-a6b6-b628091d3596]   File "/var/lib/kolla/venv/lib/python2.7/site-packages/eventlet/tpool.py", line 125, in execute
  2021-03-22 19:34:38.394 6 ERROR nova.compute.manager [instance: d1d2af1f-e973-438c-a6b6-b628091d3596]     six.reraise(c, e, tb)
  2021-03-22 19:34:38.394 6 ERROR nova.compute.manager [instance: d1d2af1f-e973-438c-a6b6-b628091d3596]   File "/var/lib/kolla/venv/lib/python2.7/site-packages/eventlet/tpool.py", line 83, in tworker
  2021-03-22 19:34:38.394 6 ERROR nova.compute.manager [instance: d1d2af1f-e973-438c-a6b6-b628091d3596]     rv = meth(*args, **kwargs)
  2021-03-22 19:34:38.394 6 ERROR nova.compute.manager [instance: d1d2af1f-e973-438c-a6b6-b628091d3596]   File "/usr/lib64/python2.7/site-packages/libvirt.py", line 1433, in jobStats
  2021-03-22 19:34:38.394 6 ERROR nova.compute.manager [instance: d1d2af1f-e973-438c-a6b6-b628091d3596]     if ret is None: raise libvirtError ('virDomainGetJobStats() failed', dom=self)
  2021-03-22 19:34:38.394 6 ERROR nova.compute.manager [instance: d1d2af1f-e973-438c-a6b6-b628091d3596] libvirtError: Unable to read from monitor: Connection reset by peer
  2021-03-22 19:34:38.394 6 ERROR nova.compute.manager [instance: d1d2af1f-e973-438c-a6b6-b628091d3596]
  2021-03-22 19:34:38.637 6 ERROR nova.virt.libvirt.driver [- req-None - - - - -] [instance: d1d2af1f-e973-438c-a6b6-b628091d3596] Live Migration failure: operation failed: domain is not running: libvirtError: operation failed: domain is not running

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References

[Bug 1921306] [NEW] When Instance is paused state, live migration failure.
From: Xinxin Shen, 2021-03-25