Re: [Xen-users] dual personalities

[Ted Kaczmarek <tedkaz@xxxxxxxxxxxxx>]

On Wed, 2005-09-28 at 11:22 +0100, Robbie Dinn wrote:
> Kent Watsen wrote:
> > 
> > 
> > I have a working DomU when located on a physical partition (i.e. hdb, a 
> > 2nd HD that I'm using to stage guest domains), but it all goes bad when 
> > I copy the root/swap partitions into LVM-based partitions.  
> > Specifically, I have a working guest domain on hdb2 (swap is hdb1).  I 
> > created the logical volumes using the usual mix of pvcreate, vgcreate, 
> > and lvcreate:
> > 
> >    pvcreate /dev/hda5vgcreate xen-vg /dev/hda5
> >    lvcreate -L5G -n suse-root xen-vg
> >    mkfs.reiserfs /dev/xen-vg/suse-root
> >    cp -ax /<the real parition> /<the new partition> (yes, this seemed
> >    to work as expected)
> 
> Sorry, I am confused by this. Are you copying
> a filesystem image or a tree of files on a mounted
> filesystem?
> 
> The absence on any mount commands suggests the former.
> The presence of the mkfs.reiserfs command suggests the latter.
> 
> Incidently I tend to avoid using cp because I can never
> remember how it works. I tend to dd to copy disk images
> and a pair of tar commnds in a pipeline to copy file trees
> around.
hehe, I used to do that as well, cp -a (archive).
> 
> >    lvcreate -L256M -n suse-swap xen-vg
> >    mkswap /dev/xen-vg/suse-swap
> > 
> > The only other modification I made was to the start-up script as follows:
> > 
> >    < disk = [ 'phy:xen-vg/suse-root,hdb2,w',
> >    'phy:xen-vg/suse-swap,hdb1,w' ]
> >    ---
> >     > disk = [ 'phy:hdb2,hdb2,w', 'phy:hdb1,hdb1,w' ]
> 
> I am using xen-2.0.7
> 
> For my domU configuration file I have:
> 
>    disk = [ 'phy:/dev/system/domU1_root,hda1,w',
>             'phy:/dev/system/domU1_swap,hda2,w']
> 
> i.e. are you missing a /dev/ prefix somewhere?
> 
> I'm not sure this is causing you a problem though,
> it just seems better to use an explicit path.
> 
> If you fsck and mount your LVM filesystem images,
> do they check OK, mount OK, contain all the
> files you expect to be there?
> 
> _______________________________________________
Make sure your kernel has lvm support, check back in the list for more
details on this.


Regards,
Ted


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