Backups
From MyWiki
http://www.howtoforge.com/linux_lvm_snapshots
Needs space in the volume group !!
lvcreate --size 20G --snapshot --name snap /dev/TERA-VIRTUAL/root
lvremove /dev/TERA-VIRTUAL/snap
http://www.wiivil.com/2011/11/how-to-shrink-a-filesystem-in-linux/
