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.
The only disadvantage is you can't mount such filesystem
directly, you need to run 'kpartx -a' first to map nested
domuU block devies in dom0. But that's also pretty easy.
--
Tomek
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