moving system disk to other (identical) system

[fredvr]

hi,

I have to identical hardware server systems. When I move my perfectly running 160Gb systemdisk to the other hardware a bumb into problems. It looks like the booting part is running normally but when it comes to access the LVM partition it fails:
starting with a message like
/dev/mapper/ddf1_DATA unrecognized disk label
next it can't mount to /dev devices etc.

The purpose of all this is cloning the system disk to be able to create the same systems very quickly (without going through the installation part) using an image. This is what I did and discovered the cloned disk is working in the system in which it is created but not in another one. It seems that the problem has nothing to do with the way I did the cloning but it looks like there is some dependency in the configuration to unique hardware signatures...

The (SATA) disk is attached to a RAID controller. it's configured as a single JBOD however.

Any idea what's actually is causing this and how to solve or bypass this.

[edit]
A bit more detailled error information:

Red Hat nash version 6.0.19 Starting
Unable to open /dev/mapper/ddf1_DATA unrecognized disk label
Reading all physical volumes. This may take awhile...

Couldn’t find device with uid hseyqD-ClqX-Pvup-yxz1-1fe4-OLLC-4zqM9F
Could’nt find all physical volumes for VolumeGroup VolGroup01
Volumegroup not found

More lines like above

Ending with
mount : could not find filesystem '/dev/root'
setuproot : moving /dev failed : no such file or directory
setuproot : error mounting /proc : no such file or directory
setuproot : error mounting /sys : no such file or directory
switchroot : mount failed : no such file or directory

next it stops…
[/edit]

[fredvr]

I found a bit more information. It looks like that the problem resides in the way the system is installed. The system is equiped with a 160Gb systemdisk and a 1Tb hardware mirror used for DATA.

Instead of only using the 160Gb disk the system also used the 1Tb disk.

I can't beleave that the 160Gb is fully engaged by only the system. I installed the development stuff but not the office tools. Should be possible to move everything to the 160Gb but I'm afraid that's beyond my skills... Probably the best thing to do is reinstall the whole system and remove the 1T disks first


Can somebody explain me what the actual sitiation is because it's not clear to me (pretty new to linux..)
This is the (a bit condensed) information how it is setup bij the system:
/dev/sda1 200781 blocks boot Linux
/dev/sda2 160633935 Linux LVM

in /etc/fstab
/dev/VolGroup01/LogVol00 / ext3
/dev/VolGroup01/LogVol01 swap


LVM
phys.Vol
/dev/sda2
VolGroup01
PVsize 153Gb
allocatable yes

/dev/mapper/ddf1_DATAp1
VolGroup01
PVsize 931Gb
allocatable yes (but full)

VolGroup01
VGsize 1Tb


Logical Vol.
/dev/VolGroup01/LogVol00
LVsize 1Tb

/dev/VolGroup01/LogVol01
LVsize 1.9Gb