Foreign HD with LVM-Partition, how to read Data?

Hi,

I hot a HardDrive from a crashed System. The System-Harddrive is not recoverable, but the Harddrive with the LVM-Partition on it, is still "alive".

There was only one Partition in the VolumeGroup, so all the Data in the Logical Volume is on this single Partition.

Is there a way in to get the data read out of the Partition? It was formated with reiserfs on a RedHat Linux 7.1.

I activated the Hardware in my System and have now the same Running:

- RedHat 7.1 with all updates.
- self-compiled Kernel 2.4.6 with patched lvm 0.9.1_beta7

[root@holodeck lvmconf]# pvdisplay /dev/hda7
pvdisplay
--- Physical volume ---

PV Name               /dev/hda7
VG Name               lvm_volume_01
PV Size               48.54 GB / NOT usable 1.06 MB [LVM: 169 KB]
PV#                   1
PV Status             available
Allocatable           yes (but full)
Cur LV                1
PE Size (KByte)       4096
Total PE              12425
Free PE               0
Allocated PE          12425
PV UUID               cFFBJX-aqxr-P7kU-71OY-pgpX-rvtA-XxVpoc

So is there a way to get the data read out of this partition?

Greetings from Alex

Hi i could't completly understand you

is that true:

you have instaled Redhat on a working sepatarate drive and you hace added a drive from a crashed system if this is the case i hope you can run

vgscan -that will tell you the name of the volume group

vgchange -ay volume group name --that activates the volume

if you know the name of the logical volume you should be able to mount it or if you don't know the name of the logical volume you can find it out from proc

cat /proc/lvm/global

you should see all VG'S PV's and LV's

so mount /dev/ "volume group" / "Logical Volume" / " where you want it" should work

could you give a bit more information
like fstab of the instaled RedHat

Hi,

no it is a newly installed system which never was intended to use lvm. i only compiled lvm etc to get hopefully read the data of the harddriver from the completely different system.

I never activated andy volume groups or defined something with lvm.

do i have to define a volumegroup with this harddrive with the same name from the old system?

Greetings

Alexander Bruns

no you dont
you have to run vgscan

it will tell you what have it found and it should find the VG on the other disk if vgscan does not tell you that the VG is activate you should run vgchange -ay [and the name of the VG]

and then you go to /proc/lvm/ and take a look at a file called i think general you can do ls and in case it's general
cat general
will give you information of all the VG's and LV's found on your PC

and you simply mount /dev/ [the name of the VG] / [ the name of the LV]
/ [your mount point]

this should be all