Date: Mon, 21 Aug 2023 15:51:26 +0200 From: Olivier Certner <olivier.freebsd@free.fr> To: questions@freebsd.org Cc: Kaya Saman <kayasaman@optiplex-networks.com> Subject: Re: ZFS Root size keeps going down after upgrade to 13.2-release Message-ID: <2972906.hHqAuc6tWs@ravel> In-Reply-To: <ff0c28e6-154e-ca74-e8f0-1f36019f8617@optiplex-networks.com> References: <8f3b445d-3f55-f359-ce5e-0d86c57755fe@optiplex-networks.com> <362941E9-C354-4325-A691-6DC44E5F5AB6@vanderzwan.org> <ff0c28e6-154e-ca74-e8f0-1f36019f8617@optiplex-networks.com>
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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. -- Olivier Certner
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