Server Fault is a question and answer site for system and network administrators. Join them; it only takes a minute:

Sign up
Here's how it works:
  1. Anybody can ask a question
  2. Anybody can answer
  3. The best answers are voted up and rise to the top

I have a disk that I took out of a failed system. One of the partitions on the disk was one half of a software RAID-1, and that RAID-1 was a lvm2 volume group. There are several logical volumes on that volume group. Thanks to this answer I got the RAID-1 mounted and the volume group seen and recognized. I can mount most of the partitions and back them up, but one of them (of course the one I care about the most) won't mount. The system crashed while I had a snapshot partition snapshotting this partition for a backup, but I've now removed that snapshot. lvdisplay reports:

lvdisplay -v /dev/xen-disk/xen1-disk
    Using logical volume(s) on command line
  --- Logical volume ---
  LV Name                /dev/xen-disk/xen1-disk
  VG Name                xen-disk
  LV UUID                li3NC9-jRwg-ndbM-oplJ-1Omd-PcX9-qv9aB2
  LV Write Access        read/write
  LV Status              NOT available
  LV Size                150.00 GB
  Current LE             38400
  Segments               1
  Allocation             inherit
  Read ahead sectors     0

How do I repair whatever is making this unavailable and get it mounted?

share|improve this question
up vote 3 down vote accepted

Do you get any luck with:

lvchange -a y /dev/xen-disk/xen1-disk


share|improve this answer
how do avoid having to run this every reboot? – Jayen Mar 3 '14 at 10:00

Your Answer


By posting your answer, you agree to the privacy policy and terms of service.

Not the answer you're looking for? Browse other questions tagged or ask your own question.