[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

Re: [Xen-devel] xen and reiserfs

On Mon, 21 Feb 2005, Jim Martin wrote:
I'm running Xen on Fedora core 3...
uname -a
Linux groucho 2.6.10-1.1148_FC4xen0 #1 SMP Sat Feb 19 15:15:24 EST 2005 i686 i686 i386 GNU/Linux

# xm list
Name              Id  Mem(MB)  CPU  State  Time(s)  Console
Domain-0           0      121    0  r----    140.9

What I'm trying to do is get SuSE 9.2 to come up in it's own domain..
/dev/hda2 = root for FC-3
/dev/hdb2 = root for SuSE 9.2

My config file in /etc/xen (suse)
# cat suse
kernel ="/boot/vmlinuz-2.6.10-1.1148_FC4xenU"
memory = 64
name = "suse"
nics = 1
disk = ['phy:hdb2,hdb2,w']
root = "/dev/hdb2 ro"

My problem...
When I run 'xm create -c suse' everything seems fine right up to the point of
mounting root and I get this error:
md: ... autorun DONE.
Kernel panic - not syncing: VFS: Unable to mount root fs on unknown-block(3,66)
<0>Rebooting in 1 seconds..

This is a reiserfs /dev/hdb2 - does this xen kernel support reiserfs ?
Or is my config file wrong ?

Xen kernels have no problem with reiserfs (indeed, they should work with any filesystem). Your problem is due to the fact that you are booting with
a Fedora kernel, which unlike (IIRC) the suse kernels, has reiserfs as a
module, not compiled in.

Not to worry, all you have to do is add an initrd line. Unfortunately,
the kernel-xenU package from Fedora does not currently ship with an initrd, so I think you'll have to build one yourself. Try this command
(I haven't tested it, but it should work):

 mkinitrd /boot/initrd-2.6.10-1.1148_FC4xenU.img 2.6.10-1.1148_FC4xenU

Then add


to your config file in /etc/xen.

The kernel will load the necessary module(s) automatically so it should
not be necessary to modify the initrd produced by mkinitrd.

Hope this helps,

SF email is sponsored by - The IT Product Guide
Read honest & candid reviews on hundreds of IT Products from real users.
Discover which products truly live up to the hype. Start reading now.
Xen-devel mailing list



Lists.xenproject.org is hosted with RackSpace, monitoring our
servers 24x7x365 and backed by RackSpace's Fanatical Support®.