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["Markus Zoeller \(markus_z\)" <mzoeller@xxxxxxxxxxxxxxxxxx>]

This is an automated cleanup. This bug report has been closed because it
is older than 18 months and there is no open code change to fix this.
After this time it is unlikely that the circumstances which lead to
the observed issue can be reproduced.

If you can reproduce the bug, please:
* reopen the bug report (set to status "New")
* AND add the detailed steps to reproduce the issue (if applicable)
* AND leave a comment "CONFIRMED FOR: <RELEASE_NAME>"
  Only still supported release names are valid (LIBERTY, MITAKA, OCATA, NEWTON).
  Valid example: CONFIRMED FOR: LIBERTY


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

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

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https://bugs.launchpad.net/bugs/1228804

Title:
  Need  raise exception  when performing action on instance if compute
  service is down

Status in OpenStack Compute (nova):
  Expired

Bug description:
  Current compute api doesn't have precheck for  compute service before performing action on instance . If the compute service isn't available, for example like the compute host is down. and stop/start instance will lead to keep instance' task_state with 'powering-off'/'powering-on' without raising exception. 
  These actions include  stop/start, pause/unpause suspend/resume
  We need raise exception to report compute service is not available as below:

  [root@guochbo-10-7-0-151 ~]# nova start test1
  ERROR: Compute service of guochbo-10-7-0-151.sce.cn.ibm.com is unavailable at this time. (HTTP 400) (Request-ID: req-282b4ee7-8920-43e7-8ce7-40bc2330fc49)

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