RE: [Xen-users] DomU guest - resize disk on LVM?

["Roger Lucas" <roger@xxxxxxxxxxxxx>]

> -----Original Message-----
> From: xen-users-bounces@xxxxxxxxxxxxxxxxxxx 
> [mailto:xen-users-bounces@xxxxxxxxxxxxxxxxxxx] On
> Behalf Of Gerd Hoffmann
> Sent: 31 October 2006 08:27
> To: Robin Bowes
> Cc: xen-users@xxxxxxxxxxxxxxxxxxx
> Subject: Re: [Xen-users] DomU guest - resize disk on LVM?
> 
> Robin Bowes wrote:
> > I can increase the size of the under-lying logical volume
> > (/dev/vg01/lv_bah_vm) e.g increase it from 10GB to 15GB. But, even
> > though I've resized the under-lying LV, the PV in the Xen guest is still
> > only 10GB.
> >
> > How do I get the PV inside the Xen guest to reflect the increased size
> > of the under-lying disk, i.e. appear to be 15GB?
> 
> I think you can't resize PVs.  How about creating a new /dev/hda3
> partition (inside the guest) using the new disk space, create a new pv
> there, add that to the volume group?

Recent versions of LVM should include the "pvresize" command which does exactly 
what you require.  There are also long discussions
on the LVM mailing list for how to achieve a PV resize effect on older systems 
where the pvresize command doesn't exist.

BR,

Roger


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