[Libvir] [patch] qemu/kvm: use_system_powerdown instead of killing the vm hard

Daniel P. Berrange berrange at redhat.com
Tue Jan 8 16:37:02 UTC 2008

On Tue, Jan 08, 2008 at 12:15:56PM +0100, Guido Guenther wrote:
> Hi,
> currently domainShutdown kills qemu/kvm instances hard which is not very
> filesystem friendly. However recent kvm git acquired system_powerdown to
> shutdown the system gracefully by simulating an acpi power button press.
> We can now use this in libvirt: 

Excellant, although we still need to use the 'kill' approach for any VMs
which don't support the 'system_powerdown' monitor command. We should
probably try 'system_powerdown' and if that gets rejected then fallback
to just killing it. Figuring out if its rejected could be fun though;
Would have to look at the returned 'info' for an error message - hopefully
QEMU has one.

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