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eomvjv
March 25th, 2010, 09:20 PM
I have an LVM group containing three 500GB drives in my NAS/home server. Last week, the contents of this group(ext4) disappeared with no apparent explanation.

I've been looking around for solutions, and here's what I've tried:
Restoring the LVM configuration using vgcfgrestore with the most recent file from /etc/lvm/backup/. This restored just a few of the folders.


Run fsck on the group. Lots of errors, all fixed, but nothing more appears.


Run badblocks on each of the disks, no errors found.


It seems there is nothing wrong with the drives physically, or with the software configuration, so where have the files gone? Any suggestions?

Even if I can't restore the full volume, it would really help if I could just grab what I can from the drives, any ideas on how to do this?

Thanks very much!

KB1JWQ
March 25th, 2010, 09:59 PM
fscking this was probably a mistake.

Does lvs / pvs show any of the logical volumes that went messing?

eomvjv
March 25th, 2010, 10:31 PM
All volumes are and were always present, that's what makes this all so confusing!


pvscan:
PV /dev/sdb1 VG fileserver lvm2 [465.76 GB / 0 free]
PV /dev/sda1 VG fileserver lvm2 [465.76 GB / 0 free]
PV /dev/sdd1 VG fileserver lvm2 [465.76 GB / 0 free]
Total: 3 [1.36 TB] / in use: 3 [1.36 TB] / in no VG: 0 [0 ]

lvscan:
ACTIVE '/dev/fileserver/share' [1.36 TB] inherit

There were a few hundred gigs of space free on the volume though, should it show as 0 free? Is this a clue as to what might've gone wrong?

Thanks for your reply!