I understand almost everything from this guide below, but am little confused about why I got kernel panic.
Is it because of xfs filesystem, or is it wrong modules?
How do I make an initrd of a guestOS ?

I have followed this excellent guide:

http://wiki.xensource.com/xenwiki/Ho...XenOnSlackware

I start successfully with the kernel

this is my grub

title Xen
root (hd0,1)
kernel /boot/xen.gz dom0_mem=525288
module /boot/vmlinuz-2.6.16.29-xen root=/dev/hda11 ro
module /boot/xend.gz
1. booting system

uname -r
2.6.16.29-xen

2. xm create zen.cfg -c

Error;
Kernel panic - not syncing: VFS: Unable to mount root fs on unknown-block(3,2)



Can I use the same kernel for my guestOS (domU) as for my hostOS (dom0) ?
Because I only found 1 image (vmlinuz-2.6.16.29-xen)



This I have done:

mkinitrd -c -k 2.6.16.29-xen -m jbd:ext3:ide-cd:ide-disk:ide-generic:libata:jfs -o /boot/xend.gz -s /boot/xend-tree

can I copy the kernelimage vmlinuz-2.6.16.29-xen and rename it to vmlinuz-2.6.16.29-xenU





this is my zen.cfg (domU)

kernel = "/boot/vmlinuz-2.6.16.29-xen"
memory = 256
name = "zenwalk"
vif = [ 'mac=aa:00:00:00:00:11']
disk = [ 'phy:hda2,hda2,w' ]
dhcp = "dhcp"
root = "/dev/hda2 ro"
extra = "4"

this I my fstab (domU)

/dev/sda6 swap swap defaults 0 0
/dev/sda2 / xfs defaults,noatime 1 1
devpts /dev/pts devpts gid=5,mode=620 0 0
proc /proc proc defaults 0 0
/dev/sr0 /mnt/dvd iso9660,udf noauto,users,ro 0 0
/dev/sr1 /mnt/dvd1 iso9660,udf noauto,users,ro 0 0


Help would be appreciated ?

This is a Slackware forum you know... not Zenwalk.

Furthermore I would compile a kernel specific to Zenwalk (or Slackware if you would rather use that) to be used in the domU. That 2.6.16.29 kernel is not a release Slackware has ever used.

Eric

Thanks for your advice!

After some struggle and trial and error, problem is solved,
and want to share it with you:

What I did to make it work:

mkinitrd -c -k 2.6.16.29-xen -m ext3:xfs:jbd -s /boot/yen-tree -o /boot/yen.gz -f xfs -r /dev/hda2

The thing was that the initrd was pointing to the wrong partition.And also think depending on system and what you want to do with it you need to load the right number of modules.

Hope this helps somebody else :-)

1 members found this post helpful.

hi there

i tried your example to bild initrd but i still cant boot dom0

i get :

mounting /dev/sda1 on /mnt failed: no device
no /sbin/init found on rootdev ...

im using xfs and look there is not enough modules loaded at start
i thing so

can any one help

Hi

I found out when working on it that one of the problem can be /etc/fstab on the mounted share.
It could be that easy that in grubb you have typed hda
and in /etc/fstab you have sda instead.
So solution can be to have sda as partion in both grub and fstab.

no no i had sda in both files
i think thet might be the kernel problem
i had my system installed with 2.6.25 kernel which make disk as sdX devices but xen kernel 2.6.18 make them hdX

maybe this could be it?