i want to recover my logical volume not the entire volume group.
is that possible?

vgcfgrestore will restore my all volume group , i don't want this solution

prpkrk,

I don't have exactly the information you want, but I think I know how to get the results you want. Here are my notes. I have done this exactly ONCE, so YMMV. See if it helps.

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Your sandg is still there, sort of, and the data has not been over-written. It was located on /dev/sdb, which now shows up as completely unused, which is a good thing.

Go to /etc/lvm/backup/sandg. There you will see a fully intact backup of the metadata for sandg. You can use the command vgcfgrestore to restore this metadata. Check the manpage, but I think the command would be:

# vgcfgrestore –f /etc/lvm/backup/sandg

Run it in test mode first with the –t switch.

After sandg has re-appeared, you should be able to see the Logical Volume named ‘apps_apache_2.2.17’, size 2 GB. The formatting should already be there – don’t format it. Just mount it and look it over.

If this doesn’t work, you can rebuild the Volume Group from the bottom up, by re-creating the Physical Volume. There was only one PE used, so it should be easy. Just extract the proper UUID ffrom the backup or the archive and run:

# pvcreate –uuid <uuid string>

This should replace the metadata ONLY, by over-writing it, leaving the data area of the physical volume intact. Then create the volume group ‘sandg’, add the PV to it, create a Logical Volume with exactly the old name (again drawn from the archive), and everything should line up. You should not need to format it. The fformatting should simply re-appear, as will the data.

It this a continuation of the problem in you previous thread?
http://www.unix.com/unix-dummies-que...-then-yes.html

1) Please post what Operating System and version you have.
2) Can you post the commands you typed to reduce the Filesystem or Logical Volume (or both? It's not at all clear what happened)?
3) Please make it clear whether this is a system partition or a data partition?
4) Do you have a good backup of the contents of the Filesystem concerned?

From you other thread:
This does suggest that the filesystem had file extents above the new tidemark. The filesystem is probably toast, but let's see the answers to the above questions first.

Foootnote. vgcfgrestore is probably irrelevent.