LVM2 cheat sheet

reference.txt

# LVM is an advanced system. This document only describes my use case.
# I use it on a pair of external USB disks; these commands help me to mount & unmount logical volumes on my laptop.

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# Plug in the disks, mount them

vgscan # maybe optional
vgchange -ay # creates /dev/* entries

mount /dev/<vgname>/<lvname> /mountpoint

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# How to remove disks
umount <volumes on disks>
vgchange -a n <vgname>

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# You unplugged your disks (oops). List devicemapper entries and prune the broken ones:

dmsetup ls
dmsetup remove <name>

# this is safe if you don't have any active lvm volumes
dmsetup remove_all