Re: ZFS Root size keeps going down after upgrade to 13.2-release

From: Kaya Saman <kayasaman_at_optiplex-networks.com>
Date: Mon, 21 Aug 2023 13:51:03 UTC
On 8/21/23 14:44, Ireneusz Pluta/wp.pl wrote:
>
> W dniu 21.08.2023 o 15:41, Kaya Saman pisze:
>> It shows a 52GB 'claimed' snapshot but where is it? 
> at "-o refer"


Here is the output using the 'refer' switch:

zfs list -r -t all -o space,refer zroot/ROOT/default
NAME                                      AVAIL   USED  USEDSNAP USEDDS  
USEDREFRESERV  USEDCHILD     REFER
zroot/ROOT/default                         720M  88.5G     52.0G 
36.5G             0B         0B     36.5G
zroot/ROOT/default@2022-11-28-06:08:26-0      -   583M -       
-              -          -     63.2G
zroot/ROOT/default@2022-11-28-06:38:48-0      -  11.4M -       
-              -          -     63.1G
zroot/ROOT/default@2022-11-28-07:26:20-0      -  9.41M -       
-              -          -     63.2G
zroot/ROOT/default@2023-08-20-22:00:10-0      -  34.5M -       
-              -          -     78.2G
zroot/ROOT/default@2023-08-20-22:45:34-0      -  9.56M -       
-              -          -     78.3G


I still don't understand how to free this space up? I could delete the 
snapshots dated from 2022 but will that clean anything from the 
filesystem itself? Or will it just free up the few MB under the 
'USEDSNAP' heading?