fix lost vgda on lvm *FIXED*

[oizone]

I have a lvm volumegroup with 5 physical volumes 3x80gb and 2x160gb.
A couple of days ago I was creating a raid5 array on a another machine and at one point I accidently were on the machine with the lvm and destroyed the partitions on the 160gb disks. I know, I know, that was stupid

The lvm array used to be on a another machine and I have the lvm autobackup on that machine, can I use that to restore the vgda to the disks?
if yes do the disks need to be in same device nodes as they were when the backup was taken? Or how does it know which UUID to assign to which disk?

hopefully some can help me so that I won't lose all the 550gb just because of my own stupidity...

[oizone]

Ok, so I got this finally fixed.

After some googling and posting messages here and redhat lvm mailing lists I got no help and decided to do some testing of my own and got it working again.

Here's how I got it working:

First I deleted the partitions that I accidently created on the 160gb drives and then I ran pvcreate again on them to re-create the pvs.
Then I dumped the beginning of the disks from the still functional disks and looked how the UUID is stored there. I noticed that the first 315bytes were identical on all the pvs except for the UUID so I dumped it to a file from a working disk