With Ubuntu 12.04 LTS all the software to play around with LVM should already be installed.
Create a snapshot from the shell prompt. We are going to make a
- 5Gb snapshot
- called lv_snap
- of the real partition /dev/vg01/lv_home
- which is 20Gb in size.
- mount it at /mnt/snapshot
sudo lvcreate -L5G -s -n lv_snap /dev/vg01/lv_home
Logical volume "lv_snap" created
sudo mkdir /mnt/snapshot
sudo mount /dev/vg01/lv_snap /mnt/snapshot
df -h /mnt/snapshot
Do your backups or whatever it was you wanted to do.
sudo umount /mnt/snapshot
sudo lvremove /dev/vg01/lv_snap
Do you really want to remove active logical volume "lv_snap"? [y/n]: y Logical volume "lv_snap" successfully removed
All done 🙂