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[Matt Riedemann <mriedem.os@xxxxxxxxx>]

Public bug reported:

The nova-api logs an error when trying to attach an in-use volume to a
server:

http://logs.openstack.org/91/607391/1/check/tempest-full-
py3/b5b4c63/controller/logs/screen-n-api.txt.gz?level=TRACE#_Oct_04_20_25_02_115652

Oct 04 20:25:02.115652 ubuntu-xenial-rax-ord-0002619241
devstack@n-api.service[12723]: ERROR nova.volume.cinder [None req-
45be0f9a-8af9-4886-9ef8-d09895704e36 tempest-
AttachVolumeNegativeTest-1174814842 tempest-
AttachVolumeNegativeTest-1174814842] [instance:
9b06c833-dd88-4dd0-a601-bf3dac884cb0] Create attachment failed for
volume c87044fa-7299-4559-a605-0e5d92e4e50b. Error: Invalid volume:
Volume c87044fa-7299-4559-a605-0e5d92e4e50b status must be available or
downloading (HTTP 400) (Request-ID: req-c7739c6e-b110-4b0e-a0ee-
62f3e530205e) Code: 400: cinderclient.exceptions.BadRequest: Invalid
volume: Volume c87044fa-7299-4559-a605-0e5d92e4e50b status must be
available or downloading (HTTP 400) (Request-ID: req-c7739c6e-b110-4b0e-
a0ee-62f3e530205e)

This is normal and handled by the compute API which results in a 400
response to the user:

Oct 04 20:25:02.123693 ubuntu-xenial-rax-ord-0002619241
devstack@n-api.service[12723]: INFO nova.api.openstack.wsgi [None req-
45be0f9a-8af9-4886-9ef8-d09895704e36 tempest-
AttachVolumeNegativeTest-1174814842 tempest-
AttachVolumeNegativeTest-1174814842] HTTP exception thrown: Invalid
input received: Invalid volume: Volume
c87044fa-7299-4559-a605-0e5d92e4e50b status must be available or
downloading (HTTP 400) (Request-ID: req-c7739c6e-b110-4b0e-a0ee-
62f3e530205e)

We shouldn't log an error for that since it doesn't require operator
intervention.

** Affects: nova
     Importance: Medium
     Assignee: Matt Riedemann (mriedem)
         Status: In Progress

** Affects: nova/queens
     Importance: Medium
         Status: Triaged

** Affects: nova/rocky
     Importance: Medium
         Status: Triaged


** Tags: api logging

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

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

** Changed in: nova/queens
       Status: New => Triaged

** Changed in: nova/rocky
       Status: New => Triaged

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

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

-- 
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Engineering Team, which is subscribed to OpenStack Compute (nova).
https://bugs.launchpad.net/bugs/1797237

Title:
  Superfluous "Create attachment failed for volume" error in nova-api
  logs

Status in OpenStack Compute (nova):
  In Progress
Status in OpenStack Compute (nova) queens series:
  Triaged
Status in OpenStack Compute (nova) rocky series:
  Triaged

Bug description:
  The nova-api logs an error when trying to attach an in-use volume to a
  server:

  http://logs.openstack.org/91/607391/1/check/tempest-full-
  py3/b5b4c63/controller/logs/screen-n-api.txt.gz?level=TRACE#_Oct_04_20_25_02_115652

  Oct 04 20:25:02.115652 ubuntu-xenial-rax-ord-0002619241
  devstack@n-api.service[12723]: ERROR nova.volume.cinder [None req-
  45be0f9a-8af9-4886-9ef8-d09895704e36 tempest-
  AttachVolumeNegativeTest-1174814842 tempest-
  AttachVolumeNegativeTest-1174814842] [instance:
  9b06c833-dd88-4dd0-a601-bf3dac884cb0] Create attachment failed for
  volume c87044fa-7299-4559-a605-0e5d92e4e50b. Error: Invalid volume:
  Volume c87044fa-7299-4559-a605-0e5d92e4e50b status must be available
  or downloading (HTTP 400) (Request-ID: req-c7739c6e-b110-4b0e-a0ee-
  62f3e530205e) Code: 400: cinderclient.exceptions.BadRequest: Invalid
  volume: Volume c87044fa-7299-4559-a605-0e5d92e4e50b status must be
  available or downloading (HTTP 400) (Request-ID: req-c7739c6e-b110
  -4b0e-a0ee-62f3e530205e)

  This is normal and handled by the compute API which results in a 400
  response to the user:

  Oct 04 20:25:02.123693 ubuntu-xenial-rax-ord-0002619241
  devstack@n-api.service[12723]: INFO nova.api.openstack.wsgi [None req-
  45be0f9a-8af9-4886-9ef8-d09895704e36 tempest-
  AttachVolumeNegativeTest-1174814842 tempest-
  AttachVolumeNegativeTest-1174814842] HTTP exception thrown: Invalid
  input received: Invalid volume: Volume
  c87044fa-7299-4559-a605-0e5d92e4e50b status must be available or
  downloading (HTTP 400) (Request-ID: req-c7739c6e-b110-4b0e-a0ee-
  62f3e530205e)

  We shouldn't log an error for that since it doesn't require operator
  intervention.

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