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Date:      03 Mar 2000 11:39:26 +0100
From:      Assar Westerlund <assar@sics.se>
To:        Aaron Smith <aaron-fbsd@mutex.org>
Cc:        freebsd-hackers@FreeBSD.ORG
Subject:   Re: user-space filesystems
Message-ID:  <5lem9s8hi9.fsf@assaris.sics.se>
In-Reply-To: Aaron Smith's message of "Thu, 2 Mar 2000 16:33:18 -0800"
References:  <20000302163318.F7995@gelatinous.com>

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Aaron Smith <aaron-fbsd@mutex.org> writes:
> i've done some searching and i've seen discussion of userland fs
> before. has there been any progress in the user-space filesystem area? i
> have a nifty project and i would like to avoid using loopback NFS; have we
> got anything akin to linux's userfs yet?

(As far as I know, userfs in linux is quite bit rotten.)

But I think there are two different user-space filesystems for FreeBSD
right now:

vcoda   used by the coda file system.  See LINT for enabling it and
then the code in /sys/coda

xfs     used by the arla (afs implementation) file system.  Grab code
from <http://www.stacken.kth.se/projekt/arla/>.

There's a port of arla but it's outdated and does not work anymore.
See PR 17036.  Or just grab the distribution - it builds without
problems.

These two filesystems are quite similar and of course targeted to the
needs of the file systems that use them, but they are useful for other
file systems as well.  I know that there are other file systems using
xfs for implementation ease.

Hope this is helpful and send me some more questions if you have any.

/assar


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