Upgrading your zfs versions is optional.I also upgraded from 22.12.4.2 to 23.10.0.1, with ZERO issues. All TrueCharts apps started properly and even fast, so very smooth,
like Daisuke said.
Only thing I have is two alerts regarding my two pools saying :
New ZFS version or feature flags are available for pool.....etc.
I dont really know how and what to do about that, what did you guys do..???
Or is this the issue mentioned above by Daisuke...??
Pros: New zfs features are available
Cons: no possibility to downgrade your truenas version anymore.
Also: Do never ever upgrade the zfs version of your boot pool. It will cause GRUB to fail.