Creating A Snapshot Of A Logical Volume

• We create a snapshot similar to creating a logical volume, with the addition of the '-s' flag, and naming the device to be frozen:

  root@simey:~/vdisks# lvm lvcreate -s -n lv_kosmo_old -L 100M /dev/VG_YOYO/lv_kosmo
    Logical volume "lv_kosmo_old" created
  root@simey:~/vdisks# lvm lvscan
    ACTIVE   Original '/dev/VG_YOYO/lv_kosmo' [300.00 MB] inherit
    ACTIVE            '/dev/VG_YOYO/lv_kramer' [200.00 MB] inherit
    ACTIVE   Snapshot '/dev/VG_YOYO/lv_kosmo_old' [100.00 MB] inherit
  root@simey:~/vdisks# touch /mnt/lv_kosmo/empty1
  root@simey:~/vdisks# ls /mnt/lv_kosmo*
  /mnt/lv_kosmo:
  empty1  junk1  junk2
  
  /mnt/lv_kosmo_old:
  junk1  junk2
  

Originally written by guy keren