Re: [Xen-users] can I clone a runiung domU?

[Rudi Ahlers <Rudi@xxxxxxxxxxx>]

Fajar A. Nugraha wrote:
> Rudi Ahlers wrote:
> > Fajar A. Nugraha wrote:
> > > > Using LVM you should be able to make a snapshot of the filesystem 
> > > > which
> > > > should be at least as consistent (integrity wise) as if you'd done an
> > > > 'xm destroy' on the domain.
> > > >
> > > >   
> > > A neat way to do that is if you use zfs-backed storage, either 
> > > directly (using Sun's xVM) or having solaris export the volume over 
> > > iscsi to linux box. The "clone" process for zfs is two simple 
> > > commands : "zfs snanpshot" and "zfs clone", which is almost instaneous.
> > Sure, but I don't. I'm using CentOS as OS, with ext3 :) So, I need to 
> > work with what I have
> In that case James' suggestion is probably your best bet. If you use
> lvm-backed storage for domU :
> - lvm snapshot on running domU's LVM, to get a consistent state.
> - dd from the snapshot to a new LV
> - destroy snapshot
>
> As for optimum block size for dd, I think the default PE size for linux
> LVM is 4MB, so you might want to try that.
>
> Regards,
>
> Fajar
> ------------------------------------------------------------------------
>
> _______________________________________________
How do I destroy the snapshot when the main LVM is being used by the 
domU VM?
Can I just run lvremove /dev/data/pluto_s ?

--

Kind Regards
Rudi Ahlers

Check out my technical blog, http://blog.softdux.com for Linux or other 
technical stuff


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