Use case

It is currently possible to back up a ZFS as a file system, but you have to do without all the advantages of ZFS such as encryption, volumes, Qutas etc. It would therefore be better if there were a native C/C++ module. I had a look at the libzfs and libzfs-core library, which comes with ZFS. You would actually find everything here. Incremental backups would then be possible for the datasets and full backups for the volumes (also as part of an incremental backup).
When restoring, you can do exactly the same as with the databases, where you write the restore directly to ZFS again or store it as a "zfs receive" blob. Depending on how you specify the destination.

Proposal

sample code for an file set using this plug-in
Plugin = "zfs"
":tanks=" # default "all" tanks, list of tanks or " none" to specify volumes/datasets
":exclude-datasets=" #default none exclude, when tanks will be all or list
":exclude-volumes=" #default none exclude, when tanks will be all or list
":datasets=<tank/foo, tank2/bar>" #set of datasets to backup when :tanks will be "none"
":volumes=<tank/bar, tank2/foo>" #set of volumes to backup when :tanks will be "none"
":snapshot-prefix=" #prefix for the dataset snapshots in the ZFS world for backps, default: bareos

Tracking Issues

No response