[Qemu-devel] [Bug 1354167] [NEW] On VM restart: Could not open 'poppy.qcow2': Could not read snapshots: File too large

[Todd]

Public bug reported:

I'm unable to restart a VM.   virt-manager is giving me:

Error starting domain: internal error: process exited while connecting
to monitor: qemu-system-x86_64: -drive
file=/var/lib/libvirt/images/poppy.qcow2,if=none,id=drive-virtio-
disk0,format=qcow2: could not open disk image
/var/lib/libvirt/images/poppy.qcow2: Could not read snapshots: File too
large


>From the command line trying to check the image also gives me:
qemu-img check poppy.qcow2
qemu-img: Could not open 'poppy.qcow2': Could not read snapshots: File too large


This bug appears with both the default install of qemu for ubuntu 14.04:
qemu-img version 2.0.0, Copyright (c) 2004-2008 Fabrice Bellard

And the latest version.
qemu-img version 2.1.50, Copyright (c) 2004-2008 Fabrice Bellard


Host: 
Dual E5-2650 v2 @ 2.60GHz
32GB Memory
4TB Disk space (2.1TB Free) 

Host OS: Ubuntu 14.04.1 LTS 64bit

Guest:
Ubuntu 14.04 64bit
Storage Size: 500gb

** Affects: qemu
     Importance: Undecided
         Status: New

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https://bugs.launchpad.net/bugs/1354167

Title:
  On VM restart: Could not open 'poppy.qcow2': Could not read snapshots:
  File too large

Status in QEMU:
  New

Bug description:
  I'm unable to restart a VM.   virt-manager is giving me:

  Error starting domain: internal error: process exited while connecting
  to monitor: qemu-system-x86_64: -drive
  file=/var/lib/libvirt/images/poppy.qcow2,if=none,id=drive-virtio-
  disk0,format=qcow2: could not open disk image
  /var/lib/libvirt/images/poppy.qcow2: Could not read snapshots: File
  too large

  
  From the command line trying to check the image also gives me:
  qemu-img check poppy.qcow2
  qemu-img: Could not open 'poppy.qcow2': Could not read snapshots: File too 
large

  
  This bug appears with both the default install of qemu for ubuntu 14.04:
  qemu-img version 2.0.0, Copyright (c) 2004-2008 Fabrice Bellard

  And the latest version.
  qemu-img version 2.1.50, Copyright (c) 2004-2008 Fabrice Bellard

  
  Host: 
  Dual E5-2650 v2 @ 2.60GHz
  32GB Memory
  4TB Disk space (2.1TB Free) 

  Host OS: Ubuntu 14.04.1 LTS 64bit

  Guest:
  Ubuntu 14.04 64bit
  Storage Size: 500gb

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