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 12:21:23 UTC 
On 8/21/23 13:01, Steve O'Hara-Smith wrote:
> On Mon, 21 Aug 2023 12:46:18 +0100
> Kaya Saman <kayasaman@optiplex-networks.com> wrote:
>
>> Yesterday when performing the upgrade I did notice this which happened
>> after deleting over 20GB of 'preview' files for one of my webapps in
>> /usr/local/www/ which is hosted by the apache2 port. The file system was
>> at around 97% yet after the 'rm -rf *' command the file system went to
>> 100%?
> 	There's probably at least one snapshot of that 20GB.
>

Hmm.... thanks Steve. How to find it?


Just reading through this right now: 
https://docs.oracle.com/cd/E19253-01/819-5461/gbiqe/index.html


issued: zfs list -t snapshot


result is this:

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  9.55M      -     78.3G -


Unless there is a snapshot that is on disk but not listed?


# zfs list -ro space zroot/ROOT
NAME                                          AVAIL   USED USEDSNAP  
USEDDS  USEDREFRESERV  USEDCHILD
zroot/ROOT                                     720M  88.5G 0B     
88K             0B      88.5G
zroot/ROOT/13.1-RELEASE-p5_2023-08-20_220010   720M     8K 0B      
8K             0B         0B
zroot/ROOT/13.2-RELEASE-p2_2023-08-20_224534   720M     8K 0B      
8K             0B         0B
zroot/ROOT/default                             720M  88.5G 52.0G   
36.5G             0B         0B


I think 'default' is the snapshot in use currently.


Regards,


Kaya