a ZFS hold on a snapshot where a scrub found errors

[gjp4@hpelitebook850g2-pcbsd] ~% freebsd-version
11.0-CURRENTJUNE2016
[gjp4@hpelitebook850g2-pcbsd] ~% sudo zpool status -v
  pool: persona_gjp4
 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: http://illumos.org/msg/ZFS-8000-8A
  scan: scrub repaired 0 in 0h9m with 4 errors on Sun Jun 19 00:31:38 2016
config:

        NAME         STATE     READ WRITE CKSUM
        persona_gjp4  ONLINE       0     0     4
          da0p1.eli  ONLINE       0     0     8

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

        persona_gjp4@auto-2016-06-13-23-25-00:/.thunderbird/hhs6nr6p.default/global-messages-db.sqlite
        persona_gjp4@auto-2016-06-13-23-25-00:/.kde4/share/config/ksysguardrc
        persona_gjp4@auto-2016-06-13-23-25-00:/.thumbnails/large/0ec1499dcd54e5c7d364f5d0bbb4aca8.png
        persona_gjp4@auto-2016-06-13-23-25-00:/.kde4/share/config/kmetainformationrc

  pool: tank
 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 0h20m with 0 errors on Mon Jun  6 21:28:37 2016
config:

        NAME        STATE     READ WRITE CKSUM
        tank        ONLINE       0     0     0
          ada0s1a   ONLINE       0     0     0

errors: No known data errors
[gjp4@hpelitebook850g2-pcbsd] ~% zfs hold 'scrub found errors' persona_gjp4@auto-2016-06-13-23-25-00
cannot hold: permission denied
[gjp4@hpelitebook850g2-pcbsd] ~% sudo zfs hold 'scrub found errors' persona_gjp4@auto-2016-06-13-23-25-00
[gjp4@hpelitebook850g2-pcbsd] ~% zfs holds
usage:
        holds [-Hp] [-r|-d depth] <filesystem|volume|snapshot> ...

For the property list, run: zfs set|get

For the delegated permission list, run: zfs allow|unallow
[gjp4@hpelitebook850g2-pcbsd] ~% zfs holds persona_gjp4@auto-2016-06-13-23-25-00
NAME                                   TAG                 TIMESTAMP
persona_gjp4@auto-2016-06-13-23-25-00  scrub found errors  Sun Jun 19 20:27 2016
[gjp4@hpelitebook850g2-pcbsd] ~%