From owner-freebsd-hackers Sun Dec 20 21:31:30 1998 Return-Path: Received: (from majordom@localhost) by hub.freebsd.org (8.8.8/8.8.8) id VAA06899 for freebsd-hackers-outgoing; Sun, 20 Dec 1998 21:31:30 -0800 (PST) (envelope-from owner-freebsd-hackers@FreeBSD.ORG) Received: from dingo.cdrom.com (castles336.castles.com [208.214.167.36]) by hub.freebsd.org (8.8.8/8.8.8) with ESMTP id VAA06892 for ; Sun, 20 Dec 1998 21:31:25 -0800 (PST) (envelope-from mike@dingo.cdrom.com) Received: from dingo.cdrom.com (LOCALHOST [127.0.0.1]) by dingo.cdrom.com (8.9.1/8.8.8) with ESMTP id VAA49341; Sun, 20 Dec 1998 21:29:03 -0800 (PST) (envelope-from mike@dingo.cdrom.com) Message-Id: <199812210529.VAA49341@dingo.cdrom.com> X-Mailer: exmh version 2.0.2 2/24/98 To: Kevin Van Maren cc: freebsd-hackers@FreeBSD.ORG Subject: Re: RAID support in FreeBSD In-reply-to: Your message of "Sun, 20 Dec 1998 22:23:10 MST." <199812210523.WAA02144@fast.cs.utah.edu> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Date: Sun, 20 Dec 1998 21:29:03 -0800 From: Mike Smith Sender: owner-freebsd-hackers@FreeBSD.ORG Precedence: bulk X-Loop: FreeBSD.ORG > Is anyone looking at supporting RAID 5 in FreeBSD (w/o a > hardware RAID controller)? The ccd driver's RAID 0 doesn't > provide all the desired functionality. Greg Lehey's vinum code has support for a Raid5 module, however the module is currently only available from the sponsor of the work. > The reason I bring this up now is that I was poking around > the NetBSD web pages tonight and I noticed that they've > had it in their -CURRENT for over a month, using the CMU > RAIDframe code. (Yes, it's only a month.) Yup. There was some discussion of this a little while back. > http://www.cs.usask.ca/staff/oster/raid.html > > How hard would it be for someone to port it to FreeBSD? (It > is integrated at the vnode layer; I'm not familiar with the > differences we have there, but we do use a similar vnode > driver and ccd driver). Not terribly. It would be nice, if when they ported it, they didn't butcher it quite like the NetBSD integrator did. I took the NetBSD code and the original to see what the changes they made were; there's far too much noise to be able to work easily with the diffs. Terry also posted some diffs that he produced a while back to make RaidFrame build under FreeBSD. > Is someone already working on this? Or maybe someone will > volunteer now? I was sort of hoping that this might have been you volunteering... We can provide all the help you might need (not a lot I suspect). -- \\ Sometimes you're ahead, \\ Mike Smith \\ sometimes you're behind. \\ mike@smith.net.au \\ The race is long, and in the \\ msmith@freebsd.org \\ end it's only with yourself. \\ msmith@cdrom.com To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-hackers" in the body of the message