Mailing List Archive

On Wednesday 13 July 2005 23:02, Arijit Ganguly wrote:
> Folks,
> Does Xen support COW disks.

Xen only passes block devices arround.
If you can create a copy on write blockdevice with linux, you can use it with
xen.
So with current xen stable, it might work with LVM.

Otherwise, from the xen roadmap at
http://www.cl.cam.ac.uk/Research/SRG/netos/xen/roadmap.html:

- Better copy-on-write filesystem support. Although Linux's LVM snapshot
capability can be used to provide CoW filesystem support it doesn't scale
well. A custom approach should do rather better.

/Ernst

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On 7/13/05, Gino LV. Ledesma <gledesma@gmail.com> wrote:
> Xen Wiki has some collection on CoW-like implementations:
>
> http://wiki.xensource.com/xenwiki/COWHowTo
>
> gino
>
> On 7/13/05, Ernst Bachmann <e.bachmann@xebec.de> wrote:
> > On Wednesday 13 July 2005 23:02, Arijit Ganguly wrote:
> > > Folks,
> > > Does Xen support COW disks.
> >
> > Xen only passes block devices arround.
> > If you can create a copy on write blockdevice with linux, you can use it with
> > xen.
> > So with current xen stable, it might work with LVM.
> >
> > Otherwise, from the xen roadmap at
> > http://www.cl.cam.ac.uk/Research/SRG/netos/xen/roadmap.html:
> >
> > - Better copy-on-write filesystem support. Although Linux's LVM snapshot
> > capability can be used to provide CoW filesystem support it doesn't scale
> > well. A custom approach should do rather better.
> >
> > /Ernst
> >
> > _______________________________________________
> > Xen-users mailing list
> > Xen-users@lists.xensource.com
> > http://lists.xensource.com/xen-users
> >
>

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