From owner-freebsd-fs@FreeBSD.ORG Thu Feb 15 00:45:48 2007 Return-Path: X-Original-To: freebsd-fs@freebsd.org Delivered-To: freebsd-fs@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [69.147.83.52]) by hub.freebsd.org (Postfix) with ESMTP id 1675616A401 for ; Thu, 15 Feb 2007 00:45:48 +0000 (UTC) (envelope-from rwatson@FreeBSD.org) Received: from cyrus.watson.org (cyrus.watson.org [209.31.154.42]) by mx1.freebsd.org (Postfix) with ESMTP id DC3F213C481 for ; Thu, 15 Feb 2007 00:45:47 +0000 (UTC) (envelope-from rwatson@FreeBSD.org) Received: from fledge.watson.org (fledge.watson.org [209.31.154.41]) by cyrus.watson.org (Postfix) with ESMTP id 088C04770F; Wed, 14 Feb 2007 19:26:09 -0500 (EST) Date: Thu, 15 Feb 2007 00:26:08 +0000 (GMT) From: Robert Watson X-X-Sender: robert@fledge.watson.org To: Tomas Olsson In-Reply-To: Message-ID: <20070215002206.G16383@fledge.watson.org> References: <20070213075627.63126.qmail@web34502.mail.mud.yahoo.com> <6FC9F9894A9F8C49A722CF9F2132FC2204C9DAB4@ms05.mailstreet2003.net> <6FC9F9894A9F8C49A722CF9F2132FC2204C9DAB5@ms05.mailstreet2003.net> <6FC9F9894A9F8C49A722CF9F2132FC2204C9DAB6@ms05.mailstreet2003.net> <45D1F30A.6080403@freebsd.org> <20070213192906.U726@chrishome.localnet> <20070214162938.GA96725@keira.kiwi-computer.com> <20070214173211.L1054@chrishome.localnet> <20070214170808.GC96725@keira.kiwi-computer.com> MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII; format=flowed Cc: freebsd-fs@freebsd.org, "Rick C. Petty" , arla-drinkers@stacken.kth.se Subject: Re: UFS2 with SAN X-BeenThere: freebsd-fs@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: Filesystems List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Thu, 15 Feb 2007 00:45:48 -0000 On Wed, 14 Feb 2007, Tomas Olsson wrote: > "Rick C. Petty" writes: >> the Arla client seems to behave just fine on DragonFly, Mac OS X, and all >> other BSDs. In FreeBSD, it's a wash. >> > DragonFly support is most likely fading away, AFAIK nobody's testing it. > arla-0.43 (and arla-0-44-branch) should work on FreeBSD 5, let us know if > there are any issues with that. > > As for arla post the blockcache rewrite, I now have OpenBSD going through > the basic tests (fails on heavier tests). If there's anyone with good > knowledge of FreeBSD's vfs who's willing to help me out a bit I think we > could have 6.2 support done in a week or so. If all is well, that is :) > > Last time I tried on 5.5 it kept crashing on me in the turnstile walk. > > I'm already funded and can work full time on this, but a FreeBSD hacker > would help a lot. Any volunteers? I'm not the right person to talk to you about FreeBSD VFS/buffering, but I'm very interested in seeing support for Arla improve for recent FreeBSD versions. In particular, I think it would be very helpful it it worked on FreeBSD 7-CURRENT, which would facilitate merging nnpfs into CVS. This might help solve the "forever playing catchup" problem that Arla seems constantly to experience with FreeBSD, in which nnpfs (previously xfs) gets left behind and works only on stale FreeBSD versions. In any recent FreeBSD kernel, nnpfs will need to run as an MPSAFE file system, however. Robert N M Watson Computer Laboratory University of Cambridge