Comment by r00f

Not an OP but I have similar experience with ZFS. Over 22 years of maintaining servers, I have had serious issues exclusively with ZFS. My pool is there, but it doesnt want to mount no matter what amount of IRC/reddit/SO/general googling I apply to try and help it boot. After it happened for the second time, I removed ZFS from the list of technologies I want to work with (I still have to, due to Proxmox, but without being fascinated).