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Date:      Sat, 06 Oct 2018 21:00:37 +0000
From:      bugzilla-noreply@freebsd.org
To:        fs@FreeBSD.org
Subject:   [Bug 208130] smbfs is slow because it (apparently) doesn't do any caching/buffering
Message-ID:  <bug-208130-3630-yMSLe2JqCS@https.bugs.freebsd.org/bugzilla/>
In-Reply-To: <bug-208130-3630@https.bugs.freebsd.org/bugzilla/>
References:  <bug-208130-3630@https.bugs.freebsd.org/bugzilla/>

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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=3D208130

noah.bergbauer@tum.de changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
            Version|10.2-RELEASE                |11.1-RELEASE

--- Comment #1 from noah.bergbauer@tum.de ---
Revisiting this 2.5 years later, no improvement.

But one possible workaround is to mount the smbfs, then create an md(4) disk
from a file on the mount and finally mount UFS on top of that. The
filesystem-level buffer management ensures that inefficiently small IO will
never hit the network (increase the md disk sector size as needed, 4K alrea=
dy
gives me well over 40 MiB/s).

This obviously breaks file sharing but at least it allows using samba shares
for simple remote storage (poor man's iSCSI) with decent performance.

It's a shame there is no filesystem-level equivalent of gcache(8) (which by=
 the
way is the solution if you just need a block device instead of a filesystem=
).

--=20
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