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Date:      Tue, 16 Jun 2020 13:35:29 +0000
From:      bugzilla-noreply@freebsd.org
To:        ports-bugs@FreeBSD.org
Subject:   [Bug 246577] sysutils/fuse-ntfs triggers a cache inconsistency kernel error message
Message-ID:  <bug-246577-7788-i8zQ7gahVs@https.bugs.freebsd.org/bugzilla/>
In-Reply-To: <bug-246577-7788@https.bugs.freebsd.org/bugzilla/>
References:  <bug-246577-7788@https.bugs.freebsd.org/bugzilla/>

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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=3D246577

--- Comment #2 from Alan Somers <asomers@FreeBSD.org> ---
That message normally indicates a bug in the FUSE server (not the kernel). =
 It
means that while a file was cached in the kernel, its contents changed on t=
he
server.  So yes, data corruption is a possibility.  The possible workarounds
are:

1) Convince the maintainer of fusefs-ntfs to upgrade his program to libfuse=
3.=20
That uses a newer protocol that allows for safer cacheing.

2) Disable the cache by using -o direct_io on the command line, as the cons=
ole
message suggests.

3) Disable the cache globally by setting vfs.fusefs.data_cache_mode=3D0.  T=
hat
will affect all mounted file systems using libfuse2.

--=20
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