[Qemu-devel] Re: snapshot vs COW?

[walt]

Thiemo Seufer wrote:
> Jamie Lokier wrote:
> > walt wrote:
> > > COW is a nice feature but it is currently broken, so don't use it
> > > until it gets fixed.  When you commit any changes your backing file
> > > will be corrupted.

> > Aieee!  I use COW instead of snapshots in my management scripts,
> > because snapshots are harder to manage.
> >
> > Is the COW brokenness documented?  What version did it start being broken?

> Cow2 is broken in the 0.9.1 release, it was fixed shortly afterwards.
> The symptom was corruption of the image when it grew beyond 4 GB...

Glad to hear it, thanks for the update.  That means that the fix is
already in the kvm git repository?