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Date:      Sun, 3 May 2020 06:05:29 +0100
From:      Graham Perrin <grahamperrin@gmail.com>
To:        freebsd-current@freebsd.org
Subject:   Re: beadm no longer able to destroy, maybe since using OpenZFS
Message-ID:  <8e30bce4-e740-2d8b-24dd-b73471bf0fab@gmail.com>
In-Reply-To: <f8866d18-de55-715a-be31-71ac44dea7dc@gmail.com>
References:  <f8866d18-de55-715a-be31-71ac44dea7dc@gmail.com>
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After reverting from OpenZFS to ZFS, I was able to destroy two of the 
boot environments that previously (below, 1st May, OpenZFS) could not be 
destroyed.

I'm left with at least one BE 'r360237c' that can not be destroyed. Is 
it ever normal to find a snapshot described as '-'?

root@momh167-gjp4-8570p:~ # kldstat | grep zfs
  2    1 0xffffffff82109000   3a8b40 zfs.ko
root@momh167-gjp4-8570p:~ # date
Sun May  3 05:59:06 BST 2020
root@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@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@2020-04-09-17:59:32               -      - 1.1G 2020-04-09 
17:59

r360237c
   copperbowl/ROOT/r360237c@2020-03-20-06:19:45 -      - 1.0G 2020-03-20 
06:19
   copperbowl/ROOT/r360237c@2020-04-09-17:59:32 -      - 1.1G 2020-04-09 
17:59
   copperbowl/ROOT/r360237c@2020-04-29-13:24:52 -      - 11.2M 
2020-04-29 13:24
   copperbowl/ROOT/r360237c                     -      - 80.4G 
2020-04-29 13:24

r360237e
   copperbowl/ROOT/r360237e@2020-05-01-17:58:33 -      - 96.6M 
2020-05-01 17:58
   copperbowl/ROOT/r360237e                     NR     / 1.3G 2020-05-01 
17:58
     r360237c@2020-04-29-13:24:52               -      - 11.2M 
2020-04-29 13:24
root@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@2020-05-01-17:58:33
copperbowl/ROOT/r360237e
copperbowl/ROOT/r357746h
copperbowl/ROOT/Waterfox
root@momh167-gjp4-8570p:~ # zfs list -t snapshot
NAME                                                     USED AVAIL  
REFER  MOUNTPOINT
copperbowl/ROOT/r360237c@2020-03-20-06:19:45            1.02G -  59.2G  -
copperbowl/ROOT/r360237c@2020-04-09-17:59:32            1.15G -  60.0G  -
copperbowl/ROOT/r360237c@2020-04-29-13:24:52            11.2M -  62.2G  -
copperbowl/ROOT/r360237e@2020-05-01-17:58:33            96.6M -  62.3G  -
copperbowl/iocage/releases/12.0-RELEASE/root@jbrowsers     8K -  1.24G  -
copperbowl/poudriere/jails/head@clean                    376K -  1.91G  -
copperbowl/usr/home@2020-05-03-05:55-r360237            57.7M -   171G  -
root@momh167-gjp4-8570p:~ # uname -v
FreeBSD 13.0-CURRENT #54 r360237: Fri Apr 24 09:10:37 BST 2020 
root@momh167-gjp4-8570p:/usr/obj/usr/src/amd64.amd64/sys/GENERIC-NODEBUG
root@momh167-gjp4-8570p:~ #

----

On 01/05/2020 18:57, Graham Perrin wrote:
> root@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@momh167-gjp4-8570p:/usr/obj/usr/src/amd64.amd64/sys/GENERIC-NODEBUG
> root@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@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@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@2020-05-01-17:58:54
> copperbowl/ROOT/r360237d@2020-05-01-17:58:33
> copperbowl/ROOT/r360237d
> copperbowl/ROOT/r360237b@2020-04-30-13:08:36
> copperbowl/ROOT/r360237b
> copperbowl/ROOT/r357746h
> copperbowl/ROOT/Waterfox
> root@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@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@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@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@2020-04-29-13:24:52               -      - 11.2M 
> 2020-04-29 13:24
>   copperbowl/ROOT/r360237b@2020-04-30-13:08:36 -      - 1.4M 
> 2020-04-30 13:08
>
> r360237c
>   copperbowl/ROOT/r360237c@2020-03-20-06:19:45 -      - 1.0G 
> 2020-03-20 06:19
>   copperbowl/ROOT/r360237c@2020-04-09-17:59:32 -      - 925.0M 
> 2020-04-09 17:59
>   copperbowl/ROOT/r360237c@2020-04-20-06:44:01 -      - 11.6G 
> 2020-04-20 06:44
>   copperbowl/ROOT/r360237c@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@2020-04-30-13:08:36               -      - 1.4M 
> 2020-04-30 13:08
>   copperbowl/ROOT/r360237d@2020-05-01-17:58:33 -      - 440.0K 
> 2020-05-01 17:58
>   copperbowl/ROOT/r360237d@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@2020-05-01-17:58:54               -      - 408.0K 
> 2020-05-01 17:58
> root@momh167-gjp4-8570p:~ # zfs list -t snapshot
> NAME                                                     USED AVAIL  
> REFER  MOUNTPOINT
> copperbowl/ROOT/r360237b@2020-04-30-13:08:36            1.36M - 62.3G  -
> copperbowl/ROOT/r360237c@2020-03-20-06:19:45            1.02G - 59.2G  -
> copperbowl/ROOT/r360237c@2020-04-09-17:59:32             925M - 60.0G  -
> copperbowl/ROOT/r360237c@2020-04-20-06:44:01            11.6G - 61.7G  -
> copperbowl/ROOT/r360237c@2020-04-29-13:24:52            11.2M - 62.2G  -
> copperbowl/ROOT/r360237d@2020-05-01-17:58:33             440K - 62.3G  -
> copperbowl/ROOT/r360237d@2020-05-01-17:58:54             408K - 62.3G  -
> copperbowl/iocage/releases/12.0-RELEASE/root@jbrowsers     8K - 1.24G  -
> copperbowl/poudriere/jails/head@clean                    384K - 1.91G  -
> copperbowl/usr/home@2020-04-28-10:42-r360237            5.89G - 172G  -
> root@momh167-gjp4-8570p:~ #
>

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