the holcasaur

  pool: exportpool
 state: ONLINE
status: The pool is formatted using an older on-disk format.  The pool can
        still be used, but some features are unavailable.
action: Upgrade the pool using 'zpool upgrade'.  Once this is done, the
        pool will no longer be accessible on older software versions.
 scrub: none requested
config:

        NAME        STATE     READ WRITE CKSUM
        exportpool  ONLINE       0     0     0
          c0t0d0s7  ONLINE       0     0     0
          c0t1d0    ONLINE       0     0     0

errors: No known data errors

So, for a verbal explanation, it’s a striped pool made up of one whole disk, plus one partition on c0t0d0, which also happens to be the root disk, where there are numerous other partitions housing the ufs filesystems.  Those partitions are completely unmirrored.  Oh, and it’s out of date, to boot.

If either disk goes, the whole system goes.  The performance for the zpool will be completely weird depending on which disk it hits.  And to top it all off, they are forever entangled now.  This is set in stone, unless a complete system wipe can be performed.

Good job.