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Reviewed:  https://review.openstack.org/243105
Committed: https://git.openstack.org/cgit/openstack/nova/commit/?id=c824982e6a3d6660697e503f7236377cc8202d41
Submitter: Jenkins
Branch:    master

commit c824982e6a3d6660697e503f7236377cc8202d41
Author: Javeme <zhangmei.li@xxxxxxxxxxxx>
Date:   Mon Nov 9 20:37:34 2015 +0800

    raise exception ComputeHostNotFound if host is not found
    
    When performing a live migration,I passed a wrong host parameter,
    and then I got a wrong result like this:
    "Compute service of host-1 is unavailable at this time".
    I thought the compute service stopped, but the fact was I passed
    a host id instead of a host name,therefore it could not find the host.
    
    In order to distinguish the error "host not found" from the error
    "service not available", I think we should raise a different exception
    ComputeHostNotFound instead of ComputeServiceUnavailable.
    
    This patch we will return more accurate error msg for live migration.
    
    Closes-Bug: #1538837
    Change-Id: I6ad377147070f85b9b1d5a1d1be459e890e02bcc


** Changed in: nova
       Status: In Progress => Fix Released

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https://bugs.launchpad.net/bugs/1538837

Title:
  Invalid exception raised (ComputeServiceUnavailable) if host is not
  found

Status in OpenStack Compute (nova):
  Fix Released

Bug description:
  Invalid exception raised (ComputeServiceUnavailable) if host is not
  found

  When performing a live migration, I passed a wrong host parameter, and then I got a wrong result like this:
  "Compute service of host-1 is unavailable at this time".
  I thought the compute service stopped, but the fact was I passed a host id instead of a host name, therefore it could not find the host.

  In order to distinguish the error "host not found" from the error
  "service not available", I think we should raise a different exception
  like ComputeServiceNotExist.

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