Re: [Xen-users] how do I increase a LVM based xen domU?

[Pasi Kärkkäinen <pasik@xxxxxx>]

On Fri, Sep 19, 2008 at 09:09:33AM +0200, Rudi Ahlers wrote:
> On Thu, Sep 18, 2008 at 9:07 AM, Pasi Kärkkäinen <pasik@xxxxxx> wrote:
> 
> >
> > >
> > > Can someone please tell me what commands I need to run to resize the LVM?
> > >
> >
> > I assume you have those LVM volumes in dom0.
> >
> > - lvextend the volume in dom0.
> > - run "cat /proc/partitions" in domU. Check the size of xvda.
> > - shutdown domU and start it up again (to pick up the new size for xvda
> > from the extended lvm volume)
> > - run "cat /proc/partitions" in domU. Verify xvda is bigger now.
> > - create new partition to xvda, or resize existing partition (you can only
> > grow the last partition easily)
> 
> 
> I've come this far, and can add a new partition to the domU, but ideally I'd
> like to have one partition, since we're installing cPanel (and splitting the
> data across partitions confuses some people & scripts. )
> 
> 
> 
> >
> > - mkfs.ext3 the new partition or resize2fs the existing partition you just
> > grew by editing the xvda partition table.
> >
> 
> If I understand this correctly, this will format the partition, and I will
> loose all data on it, right?
> 

mkfs.ext3 will format, yes, and you loose all the data.

resize2fs will resize (grow) existing partition, not loosing any data.

Backups are good to have anyway. 

-- Pasi

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