openstack team mailing list archive

[Jim Fehlig <jfehlig@xxxxxxxx>]

Boris Filippov wrote:
>>> But qemu can also write the vm state outside of the backend image, which
>>> should be usable with all image backends.
>>>       
>
> Use that instead managedSave? This should suffice. Save VM state,
> suspend domain - do snapshot - restore VM with previous state?
>   

For best results, I think you would need to retain the vm state, which
contains the cache buffers, and use it in conjunction with the
snapshot.  Otherwise you only have a crash-consistent snapshot right?  I
suppose modern filesystems and databases can cope though.

Regards,
Jim