beadm no longer able to destroy, maybe since using OpenZFS

[Graham Perrin]

root at momh167-gjp4-8570p:~ # date ; uname -v
Fri May  1 18:52:31 BST 2020
FreeBSD 13.0-CURRENT #54 r360237: Fri Apr 24 09:10:37 BST 2020 
root at momh167-gjp4-8570p:/usr/obj/usr/src/amd64.amd64/sys/GENERIC-NODEBUG
root at momh167-gjp4-8570p:~ # beadm list
BE       Active Mountpoint  Space Created
Waterfox -      -            1.3G 2020-03-10 18:24
r357746h -      -          928.4M 2020-04-08 09:28
r360237b -      -          213.6M 2020-04-28 20:17
r360237c -      -           92.0G 2020-04-29 13:24
r360237d -      -          153.2M 2020-04-30 13:08
r360237e NR     /          720.4M 2020-05-01 17:58
root at momh167-gjp4-8570p:~ # beadm destroy r360237b
Are you sure you want to destroy 'r360237b'?
This action cannot be undone (y/[n]): y
cannot promote 'copperbowl/ROOT/r360237d': not a cloned filesystem
root at momh167-gjp4-8570p:~ # beadm destroy r360237c
Are you sure you want to destroy 'r360237c'?
This action cannot be undone (y/[n]): y
Boot environment 'r360237c' was created from existing snapshot
Destroy '-' snapshot? (y/[n]): y
cannot destroy 'copperbowl/ROOT/r360237c': filesystem has dependent clones
use '-R' to destroy the following datasets:
copperbowl/ROOT/r360237e
copperbowl/ROOT/r360237d at 2020-05-01-17:58:54
copperbowl/ROOT/r360237d at 2020-05-01-17:58:33
copperbowl/ROOT/r360237d
copperbowl/ROOT/r360237b at 2020-04-30-13:08:36
copperbowl/ROOT/r360237b
copperbowl/ROOT/r357746h
copperbowl/ROOT/Waterfox
root at momh167-gjp4-8570p:~ # beadm destroy r360237d
Are you sure you want to destroy 'r360237d'?
This action cannot be undone (y/[n]): y
cannot promote 'copperbowl/ROOT/r360237e': not a cloned filesystem
root at momh167-gjp4-8570p:~ # beadm list -as
BE/Dataset/Snapshot                            Active Mountpoint Space 
Created

Waterfox
   copperbowl/ROOT/Waterfox                     -      - 314.0M 
2020-03-10 18:24
     r360237c at 2020-03-20-06:19:45               -      - 1.0G 2020-03-20 
06:19

r357746h
   copperbowl/ROOT/r357746h                     -      - 3.4M 2020-04-08 
09:28
     r360237c at 2020-04-09-17:59:32               -      - 925.0M 
2020-04-09 17:59

r360237b
   copperbowl/ROOT/r360237b                     -      - 202.4M 
2020-04-28 20:17
     r360237c at 2020-04-29-13:24:52               -      - 11.2M 
2020-04-29 13:24
   copperbowl/ROOT/r360237b at 2020-04-30-13:08:36 -      - 1.4M 2020-04-30 
13:08

r360237c
   copperbowl/ROOT/r360237c at 2020-03-20-06:19:45 -      - 1.0G 2020-03-20 
06:19
   copperbowl/ROOT/r360237c at 2020-04-09-17:59:32 -      - 925.0M 
2020-04-09 17:59
   copperbowl/ROOT/r360237c at 2020-04-20-06:44:01 -      - 11.6G 
2020-04-20 06:44
   copperbowl/ROOT/r360237c at 2020-04-29-13:24:52 -      - 11.2M 
2020-04-29 13:24
   copperbowl/ROOT/r360237c                     -      - 92.0G 
2020-04-29 13:24

r360237d
   copperbowl/ROOT/r360237d                     -      - 151.8M 
2020-04-30 13:08
     r360237b at 2020-04-30-13:08:36               -      - 1.4M 2020-04-30 
13:08
   copperbowl/ROOT/r360237d at 2020-05-01-17:58:33 -      - 440.0K 
2020-05-01 17:58
   copperbowl/ROOT/r360237d at 2020-05-01-17:58:54 -      - 408.0K 
2020-05-01 17:58

r360237e
   copperbowl/ROOT/r360237e                     NR     / 720.0M 
2020-05-01 17:58
     r360237d at 2020-05-01-17:58:54               -      - 408.0K 
2020-05-01 17:58
root at momh167-gjp4-8570p:~ # zfs list -t snapshot
NAME                                                     USED AVAIL  
REFER  MOUNTPOINT
copperbowl/ROOT/r360237b at 2020-04-30-13:08:36            1.36M -  62.3G  -
copperbowl/ROOT/r360237c at 2020-03-20-06:19:45            1.02G -  59.2G  -
copperbowl/ROOT/r360237c at 2020-04-09-17:59:32             925M -  60.0G  -
copperbowl/ROOT/r360237c at 2020-04-20-06:44:01            11.6G -  61.7G  -
copperbowl/ROOT/r360237c at 2020-04-29-13:24:52            11.2M -  62.2G  -
copperbowl/ROOT/r360237d at 2020-05-01-17:58:33             440K -  62.3G  -
copperbowl/ROOT/r360237d at 2020-05-01-17:58:54             408K -  62.3G  -
copperbowl/iocage/releases/12.0-RELEASE/root at jbrowsers     8K -  1.24G  -
copperbowl/poudriere/jails/head at clean                    384K -  1.91G  -
copperbowl/usr/home at 2020-04-28-10:42-r360237            5.89G -   172G  -
root at momh167-gjp4-8570p:~ #