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[Alan Pevec <1257355@xxxxxxxxxxxxxxxxxx>]

** Also affects: nova/havana
   Importance: Undecided
       Status: New

** Changed in: nova/havana
   Importance: Undecided => Medium

** Changed in: nova/havana
       Status: New => In Progress

** Changed in: nova/havana
     Assignee: (unassigned) => Dirk Mueller (dmllr)

** Changed in: nova/havana
    Milestone: None => 2013.2.2

** Tags removed: havana-backport-potential

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https://bugs.launchpad.net/bugs/1257355

Title:
  live migration fails when using non-image backed disk

Status in OpenStack Compute (Nova):
  Fix Released
Status in OpenStack Compute (nova) havana series:
  In Progress

Bug description:
  running live migration with --block-migrate fails if the disk was
  resized before (aka detached from the cow image). This is because
  nova.virt.libvirt.driver.py uses disk_size, not virt_disk_size for re-
  creating the qcow2 file on the destination host. in the case of qcow2
  files, qemu-img however needs to get the virt_disk size passed down,
  otherwise the block migration step will not be able to convert all
  blocks.

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