(ada1:ahcich1:0:0:0): READ_FPDMA_QUEUED. ACB: 60 08 f8 c8 4d 40 03 00 00 00 00 00
(ada1:ahcich1:0:0:0): CAM status: ATA Status Error
(ada1:ahcich1:0:0:0): ATA status: 41 (DRDY ERR), error: 40 (UNC )
(ada1:ahcich1:0:0:0): RES: 41 40 f8 c8 4d 40 03 00 00 00 00
(ada1:ahcich1:0:0:0): Error 5, Retries exhausted
GEOM_MIRROR: Request failed (error=5). ada1s1b[READ(offset=26232320000, length=4096)]
GEOM_MIRROR: Device swap: provider ada1s1b disconnected.

~/code/projects/amnesiacms/ gmirror status
       Name    Status  Components
mirror/swap  DEGRADED  ada0s1b (ACTIVE)

~/code/projects/amnesiacms/ zpool status
  pool: bootpool
 state: ONLINE
status: Some supported features are not enabled on the pool. The pool can
        still be used, but some features are unavailable.
action: Enable all features using 'zpool upgrade'. Once this is done,
        the pool may no longer be accessible by software that does not support
        the features. See zpool-features(7) for details.
  scan: scrub repaired 0 in 0 days 00:00:06 with 0 errors on Tue Aug 27 04:43:57 2019
config:

        NAME         STATE     READ WRITE CKSUM
        bootpool     ONLINE       0     0     0
          mirror-0   ONLINE       0     0     0
            ada0s1a  ONLINE       0     0     0
            ada1s1a  ONLINE       0     0     0

errors: No known data errors

  pool: zroot
 state: ONLINE
status: Some supported features are not enabled on the pool. The pool can
        still be used, but some features are unavailable.
action: Enable all features using 'zpool upgrade'. Once this is done,
        the pool may no longer be accessible by software that does not support
        the features. See zpool-features(7) for details.
  scan: scrub repaired 0 in 0 days 02:20:23 with 0 errors on Fri Aug 16 07:05:03 2019
config:

        NAME         STATE     READ WRITE CKSUM
        zroot        ONLINE       0     0     0
          mirror-0   ONLINE       0     0     0
            ada0s1d  ONLINE       0     0     0
            ada1s1d  ONLINE       0     0     0

errors: No known data errors