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.
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.