Re: ZFS Root size keeps going down after upgrade to 13.2-release
- In reply to: Olivier Certner : "Re: ZFS Root size keeps going down after upgrade to 13.2-release"
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Date: Mon, 21 Aug 2023 14:17:52 UTC
On 8/21/23 14:51, Olivier Certner wrote: > Hi, > >> There doesn't seem to be anything indicative of that space being used up? > Unfortunately, ZFS only reports in USED for snapshots the space that is *unique* to the corresponding snapshot, but not the space common to several ones of them, which could be freeable if it is not shared with the dataset itself. > > Use, e.g., "zfs list -o space <dataset>" to see the amount of space taken by snapshots (USEDSNAP column). > > For something more granular, you can also use "zfs get written <snapshot>" to see the amount of new data since the previous snapshot (there is also written@<snapshot>, see zfsprops(7)). > > Regards. > Thanks Olivier. This is definitely producing more interesting output now: zfs get written zroot/ROOT/default@2022-11-28-06:08:26-0 NAME PROPERTY VALUE SOURCE zroot/ROOT/default@2022-11-28-06:08:26-0 written 63.2G - zfs get written zroot/ROOT/default@2022-11-28-06:38:48-0 NAME PROPERTY VALUE SOURCE zroot/ROOT/default@2022-11-28-06:38:48-0 written 524M - zfs get written zroot/ROOT/default@2023-08-20-22:00:10-0 NAME PROPERTY VALUE SOURCE zroot/ROOT/default@2023-08-20-22:00:10-0 written 23.0G - zfs get written zroot/ROOT/default@2023-08-20-22:45:34-0 NAME PROPERTY VALUE SOURCE zroot/ROOT/default@2023-08-20-22:45:34-0 written 114M - Maybe, would it be worth clearing the 2022 snapshots, or perhaps all of the snapshots?