Comment 4 for bug 1222979

Reviewed: https://review.openstack.org/45914
Committed: http://github.com/openstack/nova/commit/506a8f58cf4b8cecf90b647c7deba47da2a4dfec
Submitter: Jenkins
Branch: master

commit 506a8f58cf4b8cecf90b647c7deba47da2a4dfec
Author: Ed Bak <email address hidden>
Date: Tue Sep 10 17:32:28 2013 +0000

    libvirt: Allow delete to complete when a volume disconnect fails

    If an instance which was booted from a volume fails to spawn, the
    instance is left in an ERROR state. If the failure is in the networking
    stage Nova will not have attached the volume via the Cinder driver,
    and so the volume remains in an available state. In this state the
    volume may be deleted or assigned to another instance.
    During the subsequent delete an exception may be thrown from
    the cinder driver which prevents the instance from completing the
    deletion process leaving the instance stuck in Error and unable to
    be deleted.

    Volume exceptions should be logged and ignored when the instance
    is being deleted.

    Closes-Bug #1222979

    Change-Id: Icb3796b0ddba25cf344953a649b2e762fab6d782