[Bug 442598] [NEW] 'qemu-img snapshot' crashed, corrupting disk image

[Nelson Elhage]

Public bug reported:

Binary package hint: qemu-kvm

I have a 10GB qcow2 disk image that I use for testing various things on
a clean Jaunty install. I created it with the qemu package from Jaunty,
and it has been working fine for some time.

I recently upgraded to Karmic, and, after doing some work in the VM,
attempting to snapshot the VM using 'qemu-img snapshot -c test
jaunty.qcow2'. After a minute or so, qemu-img had grown to consume
nearly all of my 2GB of RAM, and then, after another minute or two,
terminated with a segfault. After this crash, all attempts to use the
disk image, either via qemu-img or booting it in qemu or kvm have
resulted in a segfault.

I can generate core files of the later crashes, but since qemu uses most
of my RAM before crashing, they are quite large (1.5+GB). Please let me
know if extracting backtraces or other information would be useful, or
if I should post a core image somewhere anyways for a developer to
attempt to download it.

ProblemType: Bug
Architecture: i386
Date: Sun Oct  4 17:22:31 2009
DistroRelease: Ubuntu 9.10
KvmCmdLine: Error: command ['ps', '-C', 'kvm', '-F'] failed with exit code 1: UID        PID  PPID  C    SZ   RSS PSR STIME TTY          TIME CMD
MachineType: LENOVO 2613CTO
Package: qemu-kvm 0.11.0-0ubuntu1
PccardctlIdent:
 Socket 0:
   no product info available
PccardctlStatus:
 Socket 0:
   no card
ProcCmdLine: root=UUID=f9f53a9f-164b-4f56-aa03-d28ca7084928 ro quiet splash
ProcEnviron:
 PATH=(custom, user)
 LANG=en_US.UTF-8
 SHELL=/bin/bash
ProcVersionSignature: Ubuntu 2.6.31-11.38-generic
SourcePackage: qemu-kvm
Uname: Linux 2.6.31-11-generic i686
dmi.bios.date: 11/20/2006
dmi.bios.vendor: LENOVO
dmi.bios.version: 79ETC6WW (2.06 )
dmi.board.name: 2613CTO
dmi.board.vendor: LENOVO
dmi.board.version: Not Available
dmi.chassis.asset.tag: No Asset Information
dmi.chassis.type: 10
dmi.chassis.vendor: LENOVO
dmi.chassis.version: Not Available
dmi.modalias: dmi:bvnLENOVO:bvr79ETC6WW(2.06):bd11/20/2006:svnLENOVO:pn2613CTO:pvrThinkPadT60:rvnLENOVO:rn2613CTO:rvrNotAvailable:cvnLENOVO:ct10:cvrNotAvailable:
dmi.product.name: 2613CTO
dmi.product.version: ThinkPad T60
dmi.sys.vendor: LENOVO

** Affects: qemu-kvm (Ubuntu)
     Importance: Undecided
         Status: New


** Tags: apport-bug i386

-- 
'qemu-img snapshot' crashed, corrupting disk image
https://bugs.launchpad.net/bugs/442598
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