[Xen-users] Xen HDD failure - Migration

[Mihai Tanasescu <mihai@xxxxxxxx>]

Hello all,



I just started experimenting with XEN and ran into problems 1 month 
afterwards.
I had it on a single hard-disk system and the disk started failing.
I managed to copy /etc/xen and /home/xen (with the image files for each 
virtual machine I had) to some remote storage.
Now I reinstalled the machine on a RAID 1 enabled system and copied the 
files back.
Configuration looks the following in /etc/fstab:

[root@robu076pps mnt]# cat /etc/fstab
/dev/VolGroup00/LogVol00 /                       ext3    defaults        1 1
LABEL=/boot             /boot                   ext3    defaults        1 2
tmpfs                   /dev/shm                tmpfs   defaults        0 0
devpts                  /dev/pts                devpts  gid=5,mode=620  0 0
sysfs                   /sys                    sysfs   defaults        0 0
proc                    /proc                   proc    defaults        0 0
/dev/VolGroup00/LogVol01 swap                    swap    defaults        0 0


but if I try to start one of the old virtual machines (after modifying 
initrd and kernel parameters to the actual xen ones in this system) I get:
Scanning and configuring dmraid supported devices
no block devices found
failed to stat() /dev/mapper/nvidia_adcabaef
Scanning logical volumes
  Reading all physical volumes.  This may take a while...
  No volume groups found
Activating logical volumes
  Volume group "VolGroup00" not found
Creating root device.
Mounting root filesystem.
mount: could not find filesystem '/dev/root'
Setting up other filesystems.

Afterwards the Virtual Machine stops.


Can someone help me on how to troubleshoot this ?
I'm trying to avoid reinstalling the affected systems completely.



Thanks,
Mihai

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