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Re: kern/57467: zfs cannot umount snapshots once access it via /usr/.zfs/shapshots/ ....
The following reply was made to PR kern/57467; it has been noted by GNATS.
From: Sergio de Almeida Lenzi <nervoso%k1.com.br@localhost>
To: gnats-bugs%netbsd.org@localhost, kern-bug-people%netbsd.org@localhost, gnats-admin%netbsd.org@localhost,
netbsd-bugs%netbsd.org@localhost
Cc:
Subject: Re: kern/57467: zfs cannot umount snapshots once access it via
/usr/.zfs/shapshots/ ....
Date: Tue, 13 Jun 2023 11:42:15 -0300
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Em ter, 2023-06-13 Ã s 06:10 +0000, Michael van Elst escreveu:
> The following reply was made to PR kern/57467; it has been noted by GNATS.
> From: mlelstv%serpens.de@localhost (Michael van Elst)To: gnats-bugs%netbsd.org@localhost
> Cc: Subject: Re: kern/57467: zfs cannot umount snapshots once access it via /usr/.zfs/shapshots/ ....Date: Tue, 13 Jun 2023 06:07:51 -0000 (UTC)
> nervoso%k1.com.br@localhost writes: >but once I leave the directory, the mountpoint remains, and >there is NO WAY to umount it... umount /usr/.zfs/.... => operation not permitted even on root The zfs tool doesn't umount because a snapshot is of the wrong type. This might still be true for ZFS-on-Linux.
is there a patch for this issue??? on FreeBSD it works ok .
> The regular umount (which works on Linux) fails with "Invalid argument" because the snapshot is mounted with a vnode that isn't marked as VV_ROOT. I'm not sure if that flag could easily be set for it.
If I patch zfsmount to set the VV_ROOT will it work?
are there working on zfs to resolve these issues???
Ty
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<html dir=3D"ltr"><head></head><body style=3D"text-align:left; direction:lt=
r;" bgcolor=3D"#ffffff" text=3D"#000000" link=3D"#0000ee" vlink=3D"#0000ee"=
><div>Em ter, 2023-06-13 =C3=A0s 06:10 +0000, Michael van Elst escreveu:</d=
iv><blockquote type=3D"cite" style=3D"margin:0 0 0 .8ex; border-left:2px #7=
29fcf solid;padding-left:1ex"><pre>The following reply was made to PR kern/=
57467; it has been noted by GNATS.</pre><pre><br></pre><pre>From: </pre><a =
href=3D"mailto:mlelstv%serpens.de@localhost";><pre>mlelstv%serpens.de@localhost</pre></a><pre> (=
Michael van Elst)</pre><pre>To: </pre><a href=3D"mailto:gnats-bugs@netbsd.o=
rg"><pre>gnats-bugs%netbsd.org@localhost</pre></a><pre><br></pre><pre>Cc: </pre><pre>=
Subject: Re: kern/57467: zfs cannot umount snapshots once access it via /us=
r/.zfs/shapshots/ ....</pre><pre>Date: Tue, 13 Jun 2023 06:07:51 -0000 (UTC=
)</pre><pre><br></pre><pre> </pre><a href=3D"mailto:nervoso%k1.com.br@localhost";><pre=
>nervoso%k1.com.br@localhost</pre></a><pre> writes:</pre><pre> </pre><pre> >but on=
ce I leave the directory, the mountpoint remains, and</pre><pre> >there =
is NO WAY to umount it... umount /usr/.zfs/.... =3D> operation not permi=
tted even on root</pre><pre> </pre><pre> The zfs tool doesn't umount becaus=
e a snapshot is of the wrong type. This might still be true for ZFS-on-Linu=
x.</pre></blockquote><div>is there a patch for this issue??? on FreeBSD i=
t works ok .</div><blockquote type=3D"cite" style=3D"margin:0 0 0 .8ex; bor=
der-left:2px #729fcf solid;padding-left:1ex"><pre> </pre><pre> The regular =
umount (which works on Linux) fails with "Invalid argument"</pre><pre> beca=
use the snapshot is mounted with a vnode that isn't marked as VV_ROOT.</pre=
><pre> I'm not sure if that flag could easily be set for it.</pre><pre> </p=
re></blockquote><div>If I patch zfsmount to set the VV_ROOT will it work?<=
/div><div><br></div><div><br></div><div>are there working on zfs to resolve=
these issues???</div><div><br></div><div>Ty</div><div><br></div></body></h=
tml>
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