ZFS

List the size of all the datasets and sort

zfs list -o name,used -s used

More detailed view of space used

zfs list -o space zpool1/temp/vm-109-disk-1

Create a zfs dataset

zfs create zpool1/datasetname

You can also create a blockdevice on zfs. Which is called a zvol Create a zvol with 100GB size

zfs create -V 100G [zfspl]/[dataset]

Create a encrypted dataset with a passhprase. It will prompt you for a passphrase

zfs create -o encryption=on -o keylocation=prompt -o keyformat=passphrase zpool1/dataset

Load the key to decrypt a ZFS dataset. This is needed after a reboot to access your data.

zfs load-key -r zpool1/dataset

Sort snapshots by date

zfs list -t snapshot -o name,creation -s creation

Create a special zvol to the zpool. This vdev will store metadata and if you configure it smaller files.

zpool add zpool1 special /dev/backup-vg/special

permissions

Set permissions on dataset for specific user. The following permissions work well with syncoid.

zfs allow zsync compression,mountpoint,create,mount,receive,create,hold,rollback  zpool1