[libvirt] [PATCHv2 2/2] qemu: snapshot: Avoid libvirtd crash when qemu crashes while snapshotting
Eric Blake
eblake at redhat.com
Mon Jan 20 18:03:58 UTC 2014
On 01/20/2014 10:09 AM, Peter Krempa wrote:
> We shouldn't access the domain definition while we are in the monitor
> section as the domain is unlocked. Additionaly after we exit from the
s/Additionaly/Additionally/
> monitor we need to check if the VM is still alive. Not doing so resulted
> into crash if qemu exits while attempting to do a external VM snapshot.
s/into/in a/
> ---
>
> Notes:
> Version 1 was reported to break locking of a VM but withoit enough data to reproduce/trace.
> Version 2:
> - changed some of the conditions so that proper cleanup paths are taken
> - fixed returned error value in case the job can't be entered
>
> src/qemu/qemu_driver.c | 53 ++++++++++++++++++++++++++++++++++++++------------
> 1 file changed, 41 insertions(+), 12 deletions(-)
>
Code looks correct, I also ran through a smoke test with your reproducer
1/2 applied, and confirmed that this code is definitely required for the
fix.
ACK with grammar fixes.
--
Eric Blake eblake redhat com +1-919-301-3266
Libvirt virtualization library http://libvirt.org
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