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[Bug 1449687] Re: block migration of qcow2 VMs copies all empty space

 

The new versions are made available via the cloud-archive already on a regular base.
We backport isolated fixed that have a low regression risk for other users, but not sull versions per the SRU Policy (https://wiki.ubuntu.com/StableReleaseUpdates).

Since it seems it was identified that the version in Bionic is good, but
the new feature is huge and unlikely to be backported I'll set the tasks
up that way.

I consider it unlikely, but if there is a minor set of commits
assocuated that might be backportable please speak up and set the Xenial
task back to new when providing the commits needed.

** Also affects: qemu (Ubuntu Artful)
   Importance: Undecided
       Status: New

** Also affects: qemu (Ubuntu Xenial)
   Importance: Undecided
       Status: New

** Changed in: qemu (Ubuntu)
       Status: New => Fix Released

** Changed in: qemu (Ubuntu Xenial)
       Status: New => Won't Fix

** Changed in: qemu (Ubuntu Artful)
       Status: New => Won't Fix

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https://bugs.launchpad.net/bugs/1449687

Title:
  block migration of qcow2 VMs copies all empty space

Status in qemu package in Ubuntu:
  Fix Released
Status in qemu source package in Xenial:
  Won't Fix
Status in qemu source package in Artful:
  Won't Fix

Bug description:
  I'm running openstack 2012.1 'icehouse' which, ultimately, calls down
  into qemu-system-x86 2.0.0+dfsg-2ubuntu1.10.

  I primed the process by copying all necessary base images onto the
  destination host.  Nonetheless, post-migration instances are much
  larger than the original image; the copy duplicated all the empty
  space that ought to have remained copy-on-write.

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