Oh, yuck. ZFS-8000-8A. :(

-------------------
Mon May 29 16:23:47 [bash:5.2.15 jobs:0 error:0 time:35]
root@charm:/home/jj5
# zpool status -v
  pool: fast
 state: ONLINE
status: One or more devices has experienced an error resulting in data
        corruption.  Applications may be affected.
action: Restore the file in question if possible.  Otherwise restore the
        entire pool from backup.
   see: https://openzfs.github.io/openzfs-docs/msg/ZFS-8000-8A
config:

        NAME                                              STATE     READ WRITE CKSUM
        fast                                              ONLINE       0     0     0
          mirror-0                                        ONLINE       0     0     0
            nvme-Samsung_SSD_990_PRO_2TB_S6Z2NJ0W215171W  ONLINE       0     0     2
            nvme-Samsung_SSD_990_PRO_2TB_S6Z2NJ0W215164J  ONLINE       0     0     2

errors: Permanent errors have been detected in the following files:

        /fast/vbox/218-jj-wrk-8-charm-prod-vbox/218-jj-wrk-8-charm-prod-vbox.vdi
-------------------