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[Bug 1191608] Re: libvirt resizes of instances with ephemeral or swap defined fail

To: yahoo-eng-team@xxxxxxxxxxxxxxxxxxx
From: Thierry Carrez <thierry.carrez+lp@xxxxxxxxx>
Date: Wed, 17 Jul 2013 12:24:10 -0000
Reply-to: Bug 1191608 <1191608@xxxxxxxxxxxxxxxxxx>
Sender: bounces@xxxxxxxxxxxxx

** Changed in: nova
       Status: Fix Committed => Fix Released

** Changed in: nova
    Milestone: None => havana-2

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https://bugs.launchpad.net/bugs/1191608

Title:
  libvirt resizes of instances with ephemeral or swap defined fail

Status in OpenStack Compute (Nova):
  Fix Released

Bug description:
  Using the current master tree, attempting to resize an instance with
  the libvirt driver, which has an ephemeral or swap disk will throw an
  exception.  This is a result of my commit:

  https://github.com/openstack/nova/commit/6e768363450774cfee90e41aa5c40af780d3e04a

  The code was not properly guarding against backing files not existing
  with QCOW2 images. As such, get_disk_backing_file() would return None,
  then the subsequent call to basename() on None would cause an
  exception.

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