Stopped array, removed drives from cache pool, set pool drive size to (0).
rebooted.
started array
Ran this command "wipefs -af /dev/sdx"
stopped array, created pool, added both devices, started array.
cache came up, but drives were unformatted.
Selected the box to format, and unraid then set it up as a BTRFS cache pool by default.
I enabled a daily balance and a weekly scrub on this pool. Not sure what best practice is.
Started docker.
moved back my AppData directory.
Recreated my "Scratch Space" share, and enabled visibility on it.
Reinstalled all my docker containers from "Apps -> Previous Apps"
..... and so far, I think I'm back and functional.
This is my 2nd failure on this cache pool in (6) months. First failure this past summer was on a btrfs pool, so when I rebuilt it, I chose ZFS. I guess they both suck. I had no errors for years, before setting it up as a pool for redundancy last year. Wish there was more stability to this system.