I imagine that some of the 2019 snapshots below are redundant.
Can I safely destroy any of them?
$ zfs list -t snapshot
NAME USED AVAIL
REFER MOUNTPOINT
copperbowl/ROOT/Waterfox@2020-03-20-06:19:45 67.0M - 59.2G -
copperbowl/ROOT/r359249b@2019-08-18-04:04:53 5.82G - 40.9G -
copperbowl/ROOT/r359249b@2019-08-18-11:28:31 4.32G - 40.7G -
copperbowl/ROOT/r359249b@2019-09-13-18:45:27-0 9.43G - 43.4G -
copperbowl/ROOT/r359249b@2019-09-19-20:03:26 5.13G - 43.3G -
copperbowl/ROOT/r359249b@2019-09-24-20:45:59-0 7.67G - 44.6G -
copperbowl/ROOT/r359249b@2020-01-09-17:05:57-0 7.66G - 55.2G -
copperbowl/ROOT/r359249b@2020-01-11-14:15:47 7.41G - 56.2G -
copperbowl/ROOT/r359249b@2020-03-17-21:57:17 12.0G - 59.2G -
copperbowl/iocage/releases/12.0-RELEASE/root@jbrowsers 8K - 1.24G -
copperbowl/poudriere/jails/head@clean 328K - 1.89G -
$ beadm list
BE Active Mountpoint Space Created
Waterfox - - 12.2G 2020-03-10 18:24
r357746f - - 1.3G 2020-03-20 06:19
r359249b NR / 148.9G 2020-03-28 01:19
$ beadm list -aDs
BE/Dataset/Snapshot Active Mountpoint
Space Created
Waterfox
copperbowl/ROOT/Waterfox - - 137.0M
2020-03-10 18:24
r359249b@2020-03-17-21:57:17 - - 59.2G
2020-03-17 21:57
copperbowl/ROOT/Waterfox@2020-03-20-06:19:45 - - 67.0M
2020-03-20 06:19
r357746f
copperbowl/ROOT/r357746f - - 1.2G
2020-03-20 06:19
Waterfox@2020-03-20-06:19:45 - - 59.2G
2020-03-20 06:19
r359249b
copperbowl/ROOT/r359249b@2019-08-18-04:04:53 - - 5.8G
2019-08-18 04:04
copperbowl/ROOT/r359249b@2019-08-18-11:28:31 - - 4.3G
2019-08-18 11:28
copperbowl/ROOT/r359249b@2019-09-13-18:45:27-0 - - 9.4G
2019-09-13 18:45
copperbowl/ROOT/r359249b@2019-09-19-20:03:26 - - 5.1G
2019-09-19 20:03
copperbowl/ROOT/r359249b@2019-09-24-20:45:59-0 - - 7.7G
2019-09-24 20:45
copperbowl/ROOT/r359249b@2020-01-09-17:05:57-0 - - 7.7G
2020-01-09 17:05
copperbowl/ROOT/r359249b@2020-01-11-14:15:47 - - 7.4G
2020-01-11 14:15
copperbowl/ROOT/r359249b@2020-03-17-21:57:17 - - 12.0G
2020-03-17 21:57
copperbowl/ROOT/r359249b NR / 59.0G
2020-03-28 01:19
$
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