I ask this because I keep having hard crashes on MacOS 10.15.5.
Twice I have tried to run zpool clear (once due to an actual power failure, the second time due to an accidental unplugging of the dock sitting between the computer and the TB3 Thunderbay, oops)
Both times, zpool clear froze the terminal window and prevented my computer from rebooting.
The second time, it didn't want to even import my pool after reboot, saying every single disk was corrupt in the RaidZ-2 array. A second reboot fixed it.
Tonight I used Zetawatch to export my pool so I could unplug my laptop.
Within seconds of exporting my pool, I went to unplug the cable and just as I pulled it out, Zetawatch notified me that my drive pool was auto-imported. My menubar gave me the spinning beach ball, my dock froze, and I had to forcibly power off my laptop once again.
I can't imagine there is a valid reason the ZFS tools are repeatedly locking up my system. I've only had my RAID array and ZFS for a week... I'm now worried to put anymore data on the system and am considering wiping out the pool and replacing it with SoftRAID, or sending the Thunderbay back and getting a Synology box to use these disks with instead.