[Xen-users] LVM partitions on PV domU

To:	xen-users@xxxxxxxxxxxxxxxxxxx
Subject:	[Xen-users] LVM partitions on PV domU
From:	Matthias Reif <matthreif@xxxxxxxxx>
Date:	Thu, 18 Jun 2009 10:22:06 +1000
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Hi All,

I am trying to install a 32-bit CentOS 5 paravirtualised domU based on
the instructions at
http://wiki.centos.org/HowTos/Xen/InstallingCentOSDomU.

I would like to allocate storage to the domU as a number of LVM
logical volumes instead of a single disk image.

Ie.

kernel = "/domx/boot/vmlinuz-xen-install"
ramdisk = "/domx/boot/initrd-xen-install"
extra = "text"

[...]

disk = [ 'phy:/dev/sage/root,xvda1,w',
         'phy:/dev/sage/usr,xvda2,w',
         'phy:/dev/sage/swap,xvda3,w',
         'phy:/dev/sage/tmp,xvda4,w',
         'phy:/dev/sage/var,xvda5,w' ]
[...]

I was hoping the logical volumes would appear as partitions inside the
domU, but instead the installer recognises them as separate disk
devices and wants me to partition each of them, ie. xvda11, xvda21,
etc.

Is this expected behaviour?

Is it at all possible to pass LV partitions through to the domU as
partitions instead of disk devices?

dom0 = CentOS 5.2 64-bit
Xen = 3.3.1

Thank you.

Matthias

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[Xen-users] LVM partitions on PV domU