Re: [Xen-users] Newbie DomU problem

[Tim Post <tim.post@xxxxxxxxxxxxxxx>]

Brian -

This looks like the issue :

mount: unknown filesystem type 'ext3'

What does /etc/fstab in the dom-u's image itself tell you?

You may need to mount it as a loop device on dom-0 first. Make sure the
dom-u is not running or idle in error when you do this (on dom-0)

mkdir /testing
mount -o loop /home/poncho/gentoo/gentoo.2006-0.img /testing
cat /testing/etc/fstab

Need to be sure its not conflicting. I'm not sure how the image you
downloaded is setup by default. I use provisioning scripts on dom-0 to
make /etc/passwd fstab (and other things specific to each dom-u) from
templates when I make them.

You can also try just nulling /etc/fstab on the dom-u and rebooting, but
keep a copy, i.e. (while still mounted)

cp /testing/etc/fstab /testing/etc/fstab.backup
cat /dev/null > /testing/etc/fstab

Then unmount your local mount of the filesystem (make sure first you
aren't in /testing or you'll get a device busy error)

umount /testing

Then try again. I'm sure this is something very trivial.  

HTH
Tim


On Wed, 2006-07-05 at 12:14 +0930, Brian wrote:
> Tim, many thanks. Slowly getting the message. Your explanation has been
> helpful.
> Brian
> 
> On Wed, Jul 05, 2006 at 09:29:12AM +0800, Tim Post wrote:
> > Brian,
> > 
> > Why are you setting the root device in the dom-u to be /dev/sda6 ? Your
> > dom-u has no such partition specified to be created in the config.
> > 
> > Since you are using ATA drives, you are correct that it should be 'hda'
> > and not 'sda'.
> > 
> > Change all instances of 'hda6' to 'hda1' in your configuration file and
> > all should be well. You are specifying how the dom-u deals with your
> > gentoo image file when making it into a drive. (what disk it becomes on
> > the dom-u side), this has absolutely nothing to do with dom-0.
> 
> Ok. 
> 
> My config file
> 
> disk = [ 'file:/home/poncho/gentoo/gentoo.2006-0.img,hda1,w' ]
> memory = 256
> vcpus = 1
> builder = 'linux'
> name = 'vm1'
> vif = [ 'mac=00:16:3e:01:fa:c9' ]
> localtime = 0
> on_poweroff = 'destroy'
> on_reboot = 'restart'
> on_crash = 'restart'
> extra = 'TERM=xterm'
> kernel = "/boot/vmlinuz-xen"
> ramdisk = "/boot/initrd-xen"
> root = "/dev/hda1 ro"
> 
> 
> Log indicates part success
> 
> etfront: Initialising virtual ethernet driver.
> Loading xenblk
> Registering block device major 3
> Loading reiserfs
> Waiting for device /dev/hda1 to appear:  ok
> rootfs: major=3 minor=1 devn=769
> Mounting root /dev/hda1
> mount: unknown filesystem type 'ext3'
> umount: /dev: device is busy
> umount: /dev: device is busy
> Kernel panic - not syncing: Attempted to kill init!
> 
> ------------------------------------------
> > In other words, this line :
> > 
> > disk = [ 'file:/home/poncho/gentoo/gentoo.2006-1.img,hda1,w' ]
> > 
> > Is telling the dom-u to mount that image as its own hda1.
> 
> Ok,
> > 
> > root=/dev/hda1 ro is telling it that the newly created hda1 should also
> > be the root file system, initially read only (as any Linux system would
> > boot ..), then remount as read-write once init starts. 
> > 
> > I can't help you further with this issue unless you make these
> > corrections first :) Again, completely forget hda6.
> 
> Yes, thanks for trying to point this out.
> > 
> > You're also still missing a swap file system, which I really recommend
> > due to the amount of RAM you've allocated the dom-u or you'll be back
> > shortly wondering about malloc() error messages ;)
> 
> A swap file came with the gentoo.img. It is in the same directory at the
> moment.
> > 
> > Thanks
> > Tim
> 
> He looks to the sky ;)
> 
> _______________________________________________
> Xen-users mailing list
> Xen-users@xxxxxxxxxxxxxxxxxxx
> http://lists.xensource.com/xen-users
> 
> 


_______________________________________________
Xen-users mailing list
Xen-users@xxxxxxxxxxxxxxxxxxx
http://lists.xensource.com/xen-users