[pve-devel] VM snapshot problem

[Dietmar Maurer]

> I have tested it, taking snapshot with rbd command when vm running works
> fine.
> 
> Maybe usin qmp command permit to flush pending writes ?

I guess it works most times when you use cache=none, but that does
not mean that you should use it that way.

Especially qcow2 is not designed for shared access, so that can lead
to data loss.

Anyway, we also want to save the VM state, and qmp command does
that too.