FW: [Xen-users] Xen and OpenSSI

["Owen Campbell" <owen@xxxxxxxxxxxxx>]

Many thanks to all for the responses. It certainly looks like I have a
problem with the initrd. (Which has at least allowed me to rule out my
other suspicions!!)

I'll look into the initrd creation a little more carefully and post back
what I find. If a compressed domU appears on Xenstuff, I'll certainly
give it a whirl!!!

I also have another machine up and running with Xen 3.0 Given that this
doesn't look like an issue with mismatched dom0/domU versions (one of my
now defunct theories), I'll see what I can get running on there aswell.

Owen

-----Original Message-----
From: N Clements [mailto:optionc.ltd@xxxxxxxxx] 
Sent: 15 February 2006 16:09
To: Owen Campbell
Cc: xen-users@xxxxxxxxxxxxxxxxxxx
Subject: Re: [Xen-users] Xen and OpenSSI

On 2/14/06, Owen Campbell <owen@xxxxxxxxxxxxx> wrote:
>
>
> Hi All,
>
> I'm trying to get OpenSSI working on Xen and have hit a problem.
>
> I'm following the instructions at
> http://openssi.org/cgi-bin/view?page=docs2/1.9/debian/xen-howto.txt
> and also the document at
> http://www.option-c.com/xwiki/OpenSSI
>
> I've got as far as booting the domU with the OpenSSI kernel and I get
> "Kernel panic - not syncing: VFS: Unable to mount root fs on
> unknown-block(1,0)"

I remember seeing that problem when originally writing the wiki page
at Option-C. If I remember, it occurred because the initrd image
hadn't been created correctly. One of the problems I had was that the
image wasn't being compressed -- the domU didn't have enough memory.
Another was that the root device was different inside the domU versus
outside (/dev/sda1 vs. /dev/hda1). It doesn't look as if that's your
problem.


> My base Xen installation is 2.07 on Debian Sarge using the packages
from
> option-c and I used the pre-built OpenSSI kernel.
>
> My config file for the domU is:
>
> #kernel = "/boot/xen-linux-2.6.11-ocxenu"
>
> kernel = "......./xenU-vmlinuz"
>
> ramdisk = "........./initrd"
>
> memory = 64
>
> name = "<hostname>"
>
> disk = ['file........img,hda1,w','file.........img,hda2,w']
>
> root = "/dev/hda1 ro"
>
> #
>
> vif = ['mac=AA:00:00:18:94:FB']
>
> and /etc/fstab on the domU is
>
> # Begin /etc/fstab
>
> # <file system> <mount point>   <type>  <options>
>
>
> /dev/hda1       /       ext3
> defaults,errors=remount-ro,node=1       0
>
> /dev/hda2       swap    swap    sw,node=1       0       0
>
> proc    /proc   proc    defaults,node=* 0       0
>
> # End /etc/fstab
>
> Does anyone have any ideas as to where I've gone wrong?

Everything here looks fine. Check the ramdisk image.

If you like, I could probably compress down a domU and upload it
somewhere (probably to the XenStuff project on sourceforge).

-N

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