Re: [Xen-users] root filesystem missing loading Debian Sarge DomU

[Patrick Scharrenberg <pittipatti@xxxxxx>]

Hi!

I think your debian-system is missing the device-file for hda1 in /dev
You can either create one by mounting your filesystem in dom0 and do a

    mknod <path_to_debian_dev>/hda1 b 3 1

or better chroot into your debian-system and do a

    apt-get install udev


Patrick

> hello everybody,
>
> i have a problem running my domU which is a debian sarge. i did the
> following things to get it so far as i am now:
>
> host system: fedora core 5 dom0 with xen 3.0.3 and the xen 2.6.18-1.2200
> kernel for the host fedora machine.
> virtual xen machine: downloaded on a debian sarge with debootstrap the
> needed files (/etc/../boot/.../proc/ etc.)
> and copyÂd everything except the /dev (because there were a lot of
> errors by coping it to the fedora system) to the fedora system in a
> image (3gb). i also have a swapimage for the virtual machine (512mb).
>
> the configuration file (vm01.cfg) has the following entries:
> -----------
> kernel = "/boot/vmlinuz-2.6.18-1.2200.fc5xenU"
> memory = 128
> root = "/dev/hda1"
> name = "vm01"
> vif = [ '' ]
> dhcp = "dhcp"
> disk =
> ['file:/vserver/vm01/diskimage,hda1,w','file:/vserver/vm01/swapimage,hda2,w'
> ]
> -------------
> i also tried to replace the hda1 with sda1 (also in the fstab of the
> virtual machine!)
>
> the fstab in the virtual machine consists of the following lines:
> ------------
> /dev/hda1 / ext3 errors=remount-ro 0 1
> /dev/hda2 none swap sw 0 0
> proc /proc proc defaults 0 0
> -------------
>
> i also made manually a /dev directory in the imagefile for the virtual
> machine.created with this script:
>
> for i in console null zero ; do /mnt/vm01/dev/MAKEDEV -d /mnt/dev -x $i ; done
>
>
> so when i start the virtual machine i get the following output (cutted
> out only the important things):
>
> ---------------------------------
> EXT3 FS on hda1, internal journal
> EXT3-fs: recovery complete.
> EXT3-fs: mounted filesystem with ordered data mode.
> VFS: Mounted root (ext3 filesystem).
> Freeing unused kernel memory: 144k freed
> Write protecting the kernel read-only data: 258k
> INIT: version 2.86 booting
> Activating swap.
>
> The device node /dev/hda1 for the root filesystem is missing,
> incorrect, or there is no entry for the root filesystem
> listed in /etc/fstab.
>
> The system is also unable to create a temporary node in
> /dev/shm to use as a work-around.
>
> This means you have to fix this manually.
>
> CONTROL-D will exit from this shell and REBOOT the system.
>
> Press enter for maintenance
> ---------------------------------------------
>
> so i dont know why i get this errors...the startsequence says that there
> is an ext3 system in /dev/hda but why cant i get into the system...when
> i type enter i see all the folders (/etc/.../src/ etc.)
>
> can anybody help me?
>
> thanks a lot
> Alexandros
>
>
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> http://lists.xensource.com/xen-users
>   


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