@georgia @Moon @takao zfs on a laptop is actually pretty neat.
Power cut because of the battery?
It *will* still boot up back fine, no files lost.
Not enough diskspace?
Compression can help quite a lot (and barely eats CPU, and tends to eases I/Os as there is less sectors to read).
I stayed on SunJDK for quite a serious while until OpenJDK got obviously better and I never would touch OracleJDK, not even for reverse-engineering it.