LVM snapshots

What a snapshot is

A snapshot captures a point-in-time view of a logical volume. It is not a backup unless exported and stored independently.

Classic snapshot example

sudo lvcreate -s -L 2G -n snap_data /dev/vg_lab/lv_data

Inspect and remove

lvs -a -o +origin,data_percent
sudo lvremove /dev/vg_lab/snap_data

Important

Snapshot capacity and performance characteristics differ between classic and thin snapshots. Consistent database backups may require application quiescing.