[Xen-users] Re: booting LVM

[Matthew Palmer <mpalmer@xxxxxxxxxxx>]

On Sat, Jan 07, 2006 at 06:13:08AM -0500, Michael Hrivnak wrote:
> I'm using Mandriva 2006 with the latest xen 3.0 binaries (not the 
> Mandriva packages which gave me problems).  I'm not sure how to get xen 
> to see my logical volumes at boot, and I have / and /home both on 
> logical volumes.  There is a raid1 array as a physical device in a 
> volume group, vg0.  That group contains logical volumes "root" and 
> "home".  Creative names, I know.
> 
> I am thus far unsuccessful at getting this setup to boot.  The challenge 
> is getting xen to see the logical volumes before it tries to mount the 
> root partition.  How is this normally done?  Does this function belong 
> in an initrd?

It's an initrd thing.  You need to make an appropriate one with the Xen
kernel's modules, and then add it as an extra "module" line to your Grub
config.  No idea how to make an initrd on Mandriva, but I'm sure it'll be
documented somewhere.  There is the (remote) possibility that Mandriva
doesn't support LVM-on-root, but it's a trivial test -- if you can boot the
system using the Mandriva-supplied kernel/initrd, then you can do it with
Xen.

- Matt

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