[Bug 1472269] [NEW] Backing file chains crash guest

[karaluh]

Public bug reported:

1. Shut down guest,
2. Create snapshot using current image as a backing file using qemu-img,
3. Update the guest definition to point to the new snapshot file,
4. Start guest - everything works,
5. Shut down guest again,
6. create new snapshot using the last snapshot as a backing file,
7. Update the guest definition to point to the snapshot of a snapshot,
8. Start guest - it crashes almost immediately.

Error msg:
błąd: Uruchomienie domeny cctvserver nie powiodło się
błąd: Unable to read from monitor: Connection reset by peer

ProblemType: Bug
DistroRelease: Ubuntu 12.04
Package: libvirt-bin 0.9.8-2ubuntu17.22
ProcVersionSignature: Ubuntu 3.2.0-86.124-generic 3.2.69
Uname: Linux 3.2.0-86-generic x86_64
ApportVersion: 2.0.1-0ubuntu17.9
Architecture: amd64
Date: Tue Jul  7 15:26:36 2015
MarkForUpload: True
ProcEnviron:
 TERM=xterm
 PATH=(custom, no user)
 LANG=pl_PL.UTF-8
 SHELL=/bin/bash
SourcePackage: libvirt
UpgradeStatus: Upgraded to precise on 2015-01-27 (161 days ago)

** Affects: libvirt (Ubuntu)
     Importance: Undecided
         Status: New


** Tags: amd64 apparmor apport-bug precise

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https://bugs.launchpad.net/bugs/1472269

Title:
  Backing file chains crash guest

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