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RE: [Xen-users] Suse 9.3 "kernel panic - not syncing: VFS: Unable tomoun

To: <ervin23@xxxxxxxxx>, <xen-users@xxxxxxxxxxxxxxxxxxx>
Subject: RE: [Xen-users] Suse 9.3 "kernel panic - not syncing: VFS: Unable tomount root fs on unknown-block (8, 1)"
From: <David_Schmidt@xxxxxxxx>
Date: Tue, 14 Jun 2005 15:15:35 -0500
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Thread-topic: [Xen-users] Suse 9.3 "kernel panic - not syncing: VFS: Unable tomount root fs on unknown-block (8, 1)"
It's possible that the fstab is incorrect inside your image.  Make sure
it is mounting / as /dev/sda1.

David 

-----Original Message-----
From: xen-users-bounces@xxxxxxxxxxxxxxxxxxx
[mailto:xen-users-bounces@xxxxxxxxxxxxxxxxxxx] On Behalf Of e&v
Sent: Tuesday, June 14, 2005 3:12 PM
To: xen-users@xxxxxxxxxxxxxxxxxxx
Subject: [Xen-users] Suse 9.3 "kernel panic - not syncing: VFS: Unable
tomount root fs on unknown-block (8, 1)"

hi, hope you can help or at least give me a hint how to proceed.... I
have Xen up and running with a domain0 but having huge problems in
getting additional domains created.

 I followed the instructions in the Suse "readme for xen packages " ->
http://www.suse.de/~garloff/linux/xen/README.SuSE and I get to e)

These are the steps I followed:  
Ad 3) YaST dirinstall
a) Create a root FS image
    - create disc image file (dd if=/dev/zero of=img ...)
    - create file system (mkXYZfs img)
    - mount image (mount -o loop img ...)
 b) start yast2 dirinstall module, select mounted directory as a target,
    select required packages (don't forget to select XEN kernel, you
need
    some of the kernel modules in the root FS)
 c) create /etc/fstab in the root FS
 d) umount image/FS
 e) configure and start XEN (use the image/FS as storage)

When I use the config below, when starting a new domain with 

xm create configfile vmid=1 -c .... I get the following error in the
start up sequence:

"kernel panic - not syncing: VFS: Unable to mount root fs on
unknown-block (8,1)"

Config.file: 
kernel = "/boot/vmlinuz-2.6.11.4-21.7-xen"
memory = 100
name = "suse931"
nics = 1
ip = "1.2.3.4"
disk = ['file:/home/name/vm1disk,sda1,w']
root = "/dev/sda1"

By the way I get the same error when trying to start TTYLINUX ... and I
followed the instructions in the Xen Manual
(http://www.cl.cam.ac.uk/Research/SRG/netos/xen/readmes/user/user.html#S
ECTION02330000000000000000

-- 

ciao ev

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