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[James Page <james.page@xxxxxxxxxx>]

** Changed in: nova (Ubuntu Trusty)
   Importance: Undecided => High

** Changed in: nova (Ubuntu Wily)
   Importance: Undecided => High

** Changed in: nova (Ubuntu Vivid)
   Importance: Undecided => High

** Also affects: libvirt (Ubuntu)
   Importance: Undecided
       Status: New

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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):
  Confirmed
Status in libvirt package in Ubuntu:
  New
Status in nova package in Ubuntu:
  Triaged
Status in libvirt source package in Trusty:
  New
Status in nova source package in Trusty:
  Triaged
Status in libvirt source package in Utopic:
  New
Status in nova source package in Utopic:
  Triaged
Status in libvirt source package in Vivid:
  New
Status in nova source package in Vivid:
  Triaged
Status in libvirt source package in Wily:
  New
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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