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.
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
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…