[Bug 1398999] Re: Block migrate with attached volumes copies volumes to themselves

[Ubuntu Foundations Team Bug Bot]

The attachment "Patch for Ubuntu willy with libvirt 1.2.16" seems to be
a patch.  If it isn't, please remove the "patch" flag from the
attachment, remove the "patch" tag, and if you are a member of the
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** Tags added: patch

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https://bugs.launchpad.net/bugs/1398999

Title:
  Block migrate with attached volumes copies volumes to themselves

Status in OpenStack Compute (nova):
  In Progress
Status in libvirt package in Ubuntu:
  Fix Released
Status in nova package in Ubuntu:
  Triaged
Status in libvirt source package in Trusty:
  Confirmed
Status in nova source package in Trusty:
  Triaged
Status in libvirt source package in Utopic:
  Won't Fix
Status in nova source package in Utopic:
  Won't Fix
Status in libvirt source package in Vivid:
  Confirmed
Status in nova source package in Vivid:
  Triaged
Status in libvirt source package in Wily:
  Fix Released
Status in nova source package in Wily:
  Triaged

Bug description:
  When an instance with attached Cinder volumes is block migrated, the
  Cinder volumes are block migrated along with it. If they exist on
  shared storage, then they end up being copied, over the network, from
  themselves to themselves. At a minimum, this is horribly slow and de-
  sparses a sparse volume; at worst, this could cause massive data
  corruption.

  More details at http://lists.openstack.org/pipermail/openstack-
  dev/2014-June/038152.html

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