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xen-devel
RE: [Xen-devel] COW in Xen
> > I've been using qcow images generated by qemu-img for Linux and
> > MSWIndows HVM guests, and I've been getting good results. The image
> > files are much smaller that the equivalently sized raw images.
> >
> > I simply create them (via gemi-img create -f qcom 10G) and use the
> > disk=['file:...'] line in my guest configuration files.
> >
> If I got Mark right, it's not the image type qcow itself, he's
> interested in,
> but the COW (Copy-on-write) feature. Some time ago I tried to get
> COW working with qcow images, without success. So I guess the name
> is missleading, and (in Xen) there's no COW based on qcow.
>
> I'd really like to get a simple file based COW - is this planned for
> future Xen releases? Maybe someone can comment?
AFAIK it works in xen-unstable, so will be in 3.0.5.
Ian
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