I researched and found that ZFS should be the best partition for speed and mass storage backups, while ext4 wastes 10% of space.
But zfs is installed on my system but not shown in KDE-Partitionmanager?
There is literally everything, all FATs, NTFS, ext*, swap, XFS but not ZFS?
Followup
through “edit toolbar” you can add the “supported filesystems” menu item and click on it, here you see whats supported and what operations. It actually isnt as perfect as it seems!
ZFS is nearly unsupported in Partitionmanager.
ZFS may not be the best filesystem for my needs, still confused why not
Even on single drive it would give you solid check summing, transparent compression, copy on write, snapshots and many other niceties.
As for OP’s question. Try installing zfsutils-linux to see if that fixes the problem.
But it’s worth mentioning that even when it shows, ZFS support is very limited through partition manager, allowing you to merely see the disk label and to create disk images from it, that’s it.
If you are going to use ZFS, you should use the command line (which for ZFS is very user-friendly really), as there is no GUI for it, aside from a few NAS oriented solutions. Also, ZFS (and btrfs) operate a little different from regular file systems and partitions, with all that vdev, pool, dataset, etc. mumbo jumbo.
In case you need to verify support, or need to find (a possible) package name, the KDE Partition Manager has a helper tool for this. See Tools > File System Support:
