2023-11-07 - Create ZFS Snapshots
WesleyBallard.com

Links:
  01: https://openzfs.github.io/openzfs-docs/man/v2.2/8/zfs-snapshot.8.html
  02: https://docs.oracle.com/cd/E19253-01/819-5461/gbcya/index.html
  03: https://docs.oracle.com/cd/E19253-01/819-5461/gbcpt/index.html

01: List datasets
  zfs list

02: Create a dataset snapshot including all descendent file systems.
    The '-r' flag causes the snapshot to be recursive and include descendents.
    The snapshot name must follow the naming requiements in link '03'.
    Simply put, Start with a letter, no spaces or special characters except
    Underscore (_) Hyphen (-) Colon (:) Period (.)
    The '@' symbol seperates the dataset name from the snapshot name.

  zfs snapshot -r tank/Documents@Snapshot-2023-11-07

03: View list of all snapshots
   zfs list -t snapshot

04: Script to create snapshots of all datasets excluding the root data set
    Replace 'tank/' with the name of your dataset.
    To include the root dataset in the snapshots remove the '/' after 'tank'

   for DATASET in $(zfs list | grep tank/ | cut -d " " -f 1); do zfs snapshot -r $DATASET@Snapshot-$(date "+%Y-%m-%d"); done