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[Launchpad Bug Tracker <1463200@xxxxxxxxxxxxxxxxxx>]

[Expired for OpenStack Compute (nova) because there has been no activity
for 60 days.]

** Changed in: nova
       Status: Incomplete => Expired

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https://bugs.launchpad.net/bugs/1463200

Title:
  check-tempest-dsvm-multinode-full fails due to "Failed to
  compute_task_migrate_server: No valid host was found"

Status in OpenStack Compute (nova):
  Expired

Bug description:
  http://logs.openstack.org/81/181781/3/check/check-tempest-dsvm-
  multinode-full/e13a3a8/logs/screen-n-cond.txt.gz?level=TRACE

  2015-06-08 20:37:00.205 WARNING nova.scheduler.utils [req-73a672be-7fe7-4bb4-a13c-6c1bbe6eb3d6 ServerDiskConfigTestJSON-326631053 ServerDiskConfigTestJSON-280407802] Failed to compute_task_migrate_server: No valid host was found. There are not enough hosts available.
  Traceback (most recent call last):

    File "/usr/local/lib/python2.7/dist-packages/oslo_messaging/rpc/server.py", line 142, in inner
      return func(*args, **kwargs)

    File "/opt/stack/new/nova/nova/scheduler/manager.py", line 86, in select_destinations
      filter_properties)

    File "/opt/stack/new/nova/nova/scheduler/filter_scheduler.py", line 89, in select_destinations
      raise exception.NoValidHost(reason=reason)

  NoValidHost: No valid host was found. There are not enough hosts
  available.

  http://logstash.openstack.org/#eyJzZWFyY2giOiJtZXNzYWdlOlwiRmFpbGVkIHRvIGNvbXB1dGVfdGFza19taWdyYXRlX3NlcnZlcjogTm8gdmFsaWQgaG9zdCB3YXMgZm91bmRcIiBBTkQgdGFnczpcInNjcmVlbi1uLWNvbmQudHh0XCIiLCJmaWVsZHMiOltdLCJvZmZzZXQiOjAsInRpbWVmcmFtZSI6IjYwNDgwMCIsImdyYXBobW9kZSI6ImNvdW50IiwidGltZSI6eyJ1c2VyX2ludGVydmFsIjowfSwic3RhbXAiOjE0MzM4MDMzMjU1ODN9

  There really isn't much in the compute logs for errors except this:

  http://logs.openstack.org/81/181781/3/check/check-tempest-dsvm-
  multinode-
  full/e13a3a8/logs/screen-n-cpu.txt.gz?level=TRACE#_2015-06-08_20_24_45_822

  2015-06-08 20:24:45.822 ERROR nova.compute.manager [req-5e3903be-
  18a7-4aa4-b874-f7116bac6e43 None None] No compute node record for host
  devstack-trusty-2-node-rax-iad-2929470.slave.openstack.org

  But that's not even at the same time.

  I see this in the n-api logs around the same time as the failures:

  http://logs.openstack.org/81/181781/3/check/check-tempest-dsvm-
  multinode-
  full/e13a3a8/logs/screen-n-api.txt.gz?level=TRACE#_2015-06-08_20_35_01_485

  015-06-08 20:35:01.485 WARNING nova.compute.api [req-eec9e9fb-8794
  -47cc-a67a-f60b3dd85ab4 MigrationsAdminTest-1879224794
  MigrationsAdminTest-93634600] [instance: 24d02424-1af8-43b8-941c-
  507806a22e79] instance's host devstack-trusty-2-node-rax-
  iad-2929470.slave.openstack.org is down, deleting from database

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