[Bug 281734] ls .zfs/snapshot automounts all snapshots

From: <bugzilla-noreply_at_freebsd.org>
Date: Thu, 26 Sep 2024 20:49:07 UTC
https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=281734

            Bug ID: 281734
           Summary: ls .zfs/snapshot automounts all snapshots
           Product: Base System
           Version: 14.1-RELEASE
          Hardware: amd64
                OS: Any
            Status: New
          Severity: Affects Only Me
          Priority: ---
         Component: kern
          Assignee: bugs@FreeBSD.org
          Reporter: fneves@registro.br

% uname -a
FreeBSD srv 14.1-RELEASE-p5 FreeBSD 14.1-RELEASE-p5 GENERIC amd64
% zfs list -t snap zroot/home | wc -l
     279
% mount -v | grep @ | wc -l
       0
% ls -l /home/.zfs/snapshot | head
total 4587
drwxr-xr-x  160 root wheel 161 Aug 14 15:20 2024-08-23_00.00.00--5w
drwxr-xr-x  160 root wheel 161 Aug 14 15:20 2024-08-24_00.00.00--5w
drwxr-xr-x  160 root wheel 161 Aug 14 15:20 2024-08-25_00.00.00--5w
drwxr-xr-x  160 root wheel 161 Aug 14 15:20 2024-08-26_00.00.00--5w
drwxr-xr-x  160 root wheel 161 Aug 14 15:20 2024-08-27_00.00.00--5w
drwxr-xr-x  160 root wheel 161 Aug 14 15:20 2024-08-28_00.00.00--5w
drwxr-xr-x  160 root wheel 161 Aug 14 15:20 2024-08-29_00.00.00--5w
drwxr-xr-x  160 root wheel 161 Aug 14 15:20 2024-08-30_00.00.00--5w
drwxr-xr-x  160 root wheel 161 Aug 14 15:20 2024-08-31_00.00.00--5w
% mount -v | grep @ | wc -l
     278

If you list the contents of a snapshot it is expected for it to be automounted
but only listing the list of available snapshots is not expected to mount any
of them. This is an unexpected behaviour. 13.3 and ZoL systems don't show this
behaviour.

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