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

[Wolfgang Rosenauer <wolfgang.rosenauer@xxxxxxxxxx>]

Ross S. W. Walker wrote:
> > 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.
> What would be the practical reason for that as opposed to
> allocating a bigger LV to contain all partitions?
For me the advantage would be that I'm able to resize the different 
partitions. If I use the LV as complete disk I only could extend the 
last partition in DomU.
Wolfgang


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