Introduction

If you ever run in to a scenario where you have a VM which won't boot. You will need to use an install disc to get into rescue mode.

Solution

Boot your rescue media. Scan for volume groups:

# lvm vgscan -v

Activate all volume groups:

# lvm vgchange -a y

List logical volumes:

# lvm lvs –all

With this information, and the volumes activated, you may be able to mount using:

# mount /dev/volumegroup/logicalvolume /mountpoint

If you get an error along the lines of: you must specify filesystem type You will need to run a file system check on the logical volume first.

# fsck -f -y /dev/VolGroup00/LogVol00

Then try mounting again. Good luck. http://jim-zimmerman.com/?p=587 http://www.itzgeek.com/how-tos/linux/centos-how-tos/rescue-your-system-with-single-user-mode-in-centos-6-rhel-6.html http://www.upstream.be/en/2013/01/what-to-do-with-a-corrupted-lvm-filesystem-centos/