At Sat, 8 Jan 2011 15:27:39 -0600 CentOS mailing list centos@centos.org wrote:
Hi,
I am trying to recover data from my old system which had LVM. The disk had two partitions - /dev/sda1 (boot, Linux) and /dev/sda2 (Linux LVM). I had taken a backup of both partitions using dd.
Now I am booting of CentOS live cd for system restore. I recreated partitions like previous system using fdisk and then used dd to dump all the data onto it. I would like to mount sda2 as LVM, but I don't know how to do that. Any steps or howto mount LVM manually would be really helpful. I think I can recover the system once I am able to access sda1 and sda2. Any help?
You will need to do a vgscan to scan for the LVM volumn you created. Once scanned, you can then mount the file system(s) there, either using the mapper files (/dev/mapper/volumegroup-volumn) or the mount labels (LABEL=label). If this was a stock CentOS install, the root file system will be labeled '/' and the /boot file system will be labeled '/boot':
mkdir /mnt/sysimage mount -v LABEL=/ /mnt/sysimage mount -v LABEL=/boot /mnt/sysimage/boot
jM.
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