Re: [Xen-users] Re: DomU on LVM

[Wolfgang Rosenauer <wolfgang.rosenauer@xxxxxxxxxx>]

Tomasz Nowak wrote:
> Wolfgang Rosenauer <wolfgang.rosenauer@xxxxxxxxxx> wrote:
> > So my plan was to use LVs directly as partitions in the guest
> > /dev/vg/lv1 -> /dev/hda1
> > /dev/vg/lv2 -> /dev/hda2 (or /dev/hdb1 FWIW)
> AFAIK this way is not to be supported in the future.
> I've managed to make it work (for each disk but /root (or /boot))
> but then I've realised there are no advantages of such setup.
>
> So IMHO a better way to do it is to export each lv as
> a separate disk and make one single partition of whole
> such disk in domU:
> /dev/vg/lv1 -> /dev/hda -> /dev/hda1 --> /
> /dev/vg/lv2 -> /dev/hdb -> /dev/hdb1 --> /var
> /dev/vg/lv3 -> /dev/hdc -> /dev/hdc1 --> /home
>
> Resizing is extremly easy (lvextend, resize2fs)
> and it can be done online if ext3 is used.
hmm, ok, sounds good.
Do I understand correctly that resizing involves the following tasks then:
- lvextend from Dom0
- modify partition table in DomU to use the new whole disk (raising the
  last block number?)
- resize2fs in DomU


Thanks,
 Wolfgang


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