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[Bug 1218057] Re: Nova libvirt driver not passing REUSE flag when _swap_volume calls blockRebase

To: yahoo-eng-team@xxxxxxxxxxxxxxxxxxx
From: Thierry Carrez <thierry.carrez+lp@xxxxxxxxx>
Date: Thu, 03 Oct 2013 08:00:29 -0000
Reply-to: Bug 1218057 <1218057@xxxxxxxxxxxxxxxxxx>
Sender: bounces@xxxxxxxxxxxxx

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

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https://bugs.launchpad.net/bugs/1218057

Title:
  Nova libvirt driver not passing REUSE flag when _swap_volume calls
  blockRebase

Status in OpenStack Compute (Nova):
  Fix Released

Bug description:
  For filesystem backed Cinder drivers like GPFS, a new volume  file is
  created before the swap operation is invoked as part of the online
  volume migration sequence.

  For this reason, the call to blockRebase from . _swap_volume (in
  nova.virt.libvirt.driver) should include the flag
  VIR_DOMAIN_BLOCK_REBASE_REUSE_EXT to allow the newly created volume
  file to be written to.

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