Re: [libvirt] F10: how to save snapshot back to image?
On Mon, Apr 20, 2009 at 12:08:48PM -0400, Gerry Reno wrote:
In Fedora 10 I've managed to get libvirt to call the emulator
with
custom arguments so I can invoke -snapshot. I just replaced the
emulator in /usr/bin with my own script which adds the argument and then
calls the original emulator. This works fine. And the snapshot works
fine. I can make lots of changes and when I shutdown and restart then
all the changes are forgotten. Now after I'm satisfied with some
changes I want to save the snapshot back to the image file. I've tried
"Ctrl-Alt-s", but this does not work. I tried finding the QEMU console,
but Serial Console is grayed out in the menu. I don't know if that
would help anyway since this was a raw image and not qcow2 so I don't
think 'savevm' and 'loadvm' would work with raw.
Can someone tell me how to save these snapshots back to the image file?
Thanks.
That's not supported at this time. The built in QCow2 snappshotting in
QEMU is also rather dangerous with it known to corrupt data in a number
of circumstances. We'd like to expose this functionality in libvirt
eventually, but we've not made it a priority yet since its not really
considered stable upstream either.
Daniel
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