[Bug 1317491] Re: virsh blockcommit hangs at 100%

[ChristianEhrhardt]

All my usual regression Tests completed on the proposed version 1.2.2-0ubuntu13.1.20.
Attaching the logs for later reference.

@Tinoco - when you completed all extra steps that I asked for and things
are good there as well, feel free to mark as verification-done.

** Attachment added: "collection of regression test logs"
   https://bugs.launchpad.net/ubuntu/+source/libvirt/+bug/1317491/+attachment/4825067/+files/test-proposed-blockcommit.tgz

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https://bugs.launchpad.net/bugs/1317491

Title:
  virsh blockcommit hangs at 100%

Status in libvirt package in Ubuntu:
  Fix Released
Status in libvirt source package in Trusty:
  Fix Committed
Status in libvirt source package in Xenial:
  Fix Released
Status in libvirt source package in Yakkety:
  Fix Released
Status in libvirt source package in Zesty:
  Fix Released

Bug description:
  [Impact]

   * Virsh can't merge snapshots using the Block Commit technique
   * It is only possible to merge base to top image (not the opposite)
   * Combination of libvirt v1.2.2 and QEMU 2 is no good for Block Commit
   * After this fix, virsh won't hang on the opration, will cause an error

  [Test Case]

   * Workaround in Commit #10
   * QEMU is fine in Commit #11
   * Test Case in Commit #12

  [Regression Potential]

   * Block commit (Already broken) would continue not working
   * Its a small fix based on upstream fix (to block this function)

  [Other Info]

  ## Original Case Description

  virsh blockcommit hangs at 100% and nothing happens.

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