Michael Prokop wrote...
I'm aware of folks having their own custom build of Grml which includes ZFS support, though providing it OOTB on official Grml isn't really an option, due to the licensing/legal issues caused by GPL-2 vs CDDL[1].
AFAIK the licensing situation is not as clear as Debian states - but rather depends a lot on whom you ask about it. That position above however is certainly the least risky one - the fact Ubuntu hasn not been sued for distributing zfs does not prove it is save to do so, and grml certainly cannot afford a law suit on this topic.
What works though is building ZFS on the running Grml live system (assuming enough RAM is available, worked fine for me e.g. with 2GB in a VM). Relevant steps, verified on grml64-full 2020.06-rc1:
(...)
For those who are interested in rolling their own kernel: It is possible to patch zfs support into the kernel sources, and the result is very convenient[1]. I might try that one day for grml but currently there's a lack of spoons and tuits.
Christoph
[1] $ zgrep ZFS /proc/config.gz CONFIG_ZFS=y