On 23 Feb 2006, at 13:32, Petersson, Mats wrote:
If you give xen a "noreboot" option, it won't try to reboot when it
crashes, which will help figuring out what the error is.
That did the trick, thanks.
I think the message you'll see is that the system failed to mount the
rootfs, which usually means either:
* udev (or devfs) isn't working right - thus /dev/mapper/<whatever> is
not available when trying to mount /
* the drivers for the hard-disk-controller and/or file-system(s) is
not
in your initrd [or in the kernel itself].
It was the lack of devfs, which Marcin's script fixed.
I've had both problems on my machine(s), and the fix is really to
figure
out what is causing the problem and figuring out which option in your
config file needs to be twiddled to fix it. Unless you've done it
several times before, it usually means a large number of kernel
builds,
mkinitrd and reboots.
Understood, though I'm attempting to do this using "out of the box"
Debian and Xen downloads, i.e. no kernel rebuilds.
I'm so close now. Just one final problem, the ethernet card doesn't
work in dom0 but it did work without Xen. That's not a problem for
this list though.
I'm very grateful to all on the list that have helped me sort this out.
In case anyone is interested, here's what I did (just the Xen-
specific bits) to install Xen 3.0.1 on Debian 3.1r1 using LVM and
software RAID1:
mkdir /usr/local/src/xen
cd /usr/local/src/xen/
wget http://bits.xensource.com/Xen/latest/xen-3.0.1-install-x86_32.tgz
tar -pzxf xen-3.0.1-install-x86_32.tgz
cd xen-3.0.1-install
apt-get update
apt-get install bridge-utils
apt-get install iproute
apt-get install python2.3
apt-get install python
sh ./install.sh
update-rc.d xend defaults
update-rc.d xendomains defaults
mv /lib/tls /lib/tls.disabled
depmod 2.6.12.6-xen
Create /etc/mkinitrd/scripts/dom0a, mode 755:
#!/bin/bash
# make a lvm LV node here
perl -pi -e 's,^vgchange,mount_tmpfs /devfs\nmkdir /devfs/mapper
\nmknod /dev/mapper/group1-dom0slash b 253 0\nvgchange,' $INITRDDIR/
script
# prevent umounting the tmp dir with the node (would happen before
mounting, ruining the above mknod)
perl -pi -e 's,^,#, if /devfs/' $INITRDDIR/sbin/init
mkinitrd -o /boot/initrd.img-xen-2.6.12.6-xen 2.6.12.6-xen
Add to end of /boot/grub/menu.lst and change the "default 0" to
point to the new entry:
title Xen 3.0 / XenLinux 2.6
kernel /xen-3.0.gz dom0_mem=262144 root=/dev/mapper/group1-
dom0slash ro console=tty0
module /vmlinuz-2.6.12-xen root=/dev/mapper/group1-dom0slash
module /initrd.img-xen-2.6.12.6-xen
Reboot
Cheers,
Mark.
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