From owner-freebsd-fs Mon Aug 31 12:17:07 1998 Return-Path: Received: (from majordom@localhost) by hub.freebsd.org (8.8.8/8.8.8) id MAA12309 for freebsd-fs-outgoing; Mon, 31 Aug 1998 12:17:07 -0700 (PDT) (envelope-from owner-freebsd-fs@FreeBSD.ORG) Received: from wanadoo.fr (smtp-out-1.wanadoo.fr [193.252.19.68]) by hub.freebsd.org (8.8.8/8.8.8) with ESMTP id MAA12269 for ; Mon, 31 Aug 1998 12:16:56 -0700 (PDT) (envelope-from vk@mankind.net) Received: from root@tamaya.wanadoo.fr [193.252.19.31] by wanadoo.fr for Paris Mon, 31 Aug 1998 21:15:14 +0200 (MET DST) Received: from tntaub2-236.abo.wanadoo.fr [193.252.212.236] by smtp.wanadoo.fr for Paris Mon, 31 Aug 1998 21:15:13 +0200 (MET DST) Message-ID: <35EAF660.A99FE8C2@mankind.net> Date: Mon, 31 Aug 1998 21:15:45 +0200 From: Vedad Kajtaz X-Mailer: Mozilla 4.05 [en] (Win95; I) MIME-Version: 1.0 To: freebsd-fs@FreeBSD.ORG Subject: Needs BSD4.2 FastFile System ID number Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7bit Sender: owner-freebsd-fs@FreeBSD.ORG Precedence: bulk X-Loop: FreeBSD.org Hi, i'm trying to install a ccd mirror driver on two scsi discs, but i need the BSD4.2 FFS filesystem ID (requested by label editor), as ccd doc suggests it's the only fs ccd would work with. Thanx, -- Vedad Kajtaz To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-fs" in the body of the message From owner-freebsd-fs Mon Aug 31 13:12:32 1998 Return-Path: Received: (from majordom@localhost) by hub.freebsd.org (8.8.8/8.8.8) id NAA20654 for freebsd-fs-outgoing; Mon, 31 Aug 1998 13:12:32 -0700 (PDT) (envelope-from owner-freebsd-fs@FreeBSD.ORG) Received: from gatewaya.anheuser-busch.com (gatewaya.anheuser-busch.com [151.145.250.252]) by hub.freebsd.org (8.8.8/8.8.8) with SMTP id NAA20634 for ; Mon, 31 Aug 1998 13:12:30 -0700 (PDT) (envelope-from Matthew.Alton@anheuser-busch.com) Received: by gatewaya.anheuser-busch.com; id PAA29309; Mon, 31 Aug 1998 15:08:43 -0500 Received: from stlabcexg006.anheuser-busch.com(stlabcexg006 151.145.101.161) by gatewaya via smap (V2.1) id xma029267; Mon, 31 Aug 98 15:08:24 -0500 Received: by STLABCEXG006 with Internet Mail Service (5.5.2232.9) id ; Mon, 31 Aug 1998 15:10:38 -0500 Message-ID: <31B3F0BF1C40D11192A700805FD48BF90177664F@STLABCEXG011> From: "Alton, Matthew" To: "'FreeBSD-fs@FreeBSD.ORG'" Subject: FW: LFS/DTFS Collaboration offer (fwd) Date: Mon, 31 Aug 1998 15:10:21 -0500 MIME-Version: 1.0 X-Mailer: Internet Mail Service (5.5.2232.9) Content-Type: text/plain Sender: owner-freebsd-fs@FreeBSD.ORG Precedence: bulk X-Loop: FreeBSD.org This is what is happening in my 2-pronged 3-tiered Soviet-style 5-year Plan for World Domination. I will 1) Port dtfs to FreeBSD. 2) Integrate dtfs into Greg Lehey's vinum software to achieve an excellent filestore. Mr. Czezatke's design is very good. I'm still studying it at this point. > -----Original Message----- > From: Christian Czezatke [SMTP:e9025461@student.tuwien.ac.at] > Sent: Monday, August 31, 1998 1:29 PM > To: Alton, Matthew > Cc: Anton Ertl > Subject: Re: LFS/DTFS Collaboration offer (fwd) > > Hi! > > > > I am very interested in your work on logging filesystems and am currently > > > studying the Linux dtfs code. I am working to revitalize the 4.4BSD LFS > > > in FreeBSD-2.2.7. I believe that our collaboration would prove mutually > > > beneficial. > > > > Sorry for the late reply, I was on vacation. I have forwarded your > > mail to Christian Czezatke, who is the one who does the hard work on > > dtfs. > > > > It's good to see more efforts for collaboration between the Linux and > > *BSD communities. However, I have discussed using the 4.4BSD LFS code > > for Linux with Christian, and IIRC he said that the filesystem and/or > > device interfaces are so different between Linux and 4.4BSD that it is > > not worthwhile. So I wonder if dtfs will help you much beyond > > understanding; but maybe you arrive at a different conclusion. > > Thanks for your interest in dtfs! --- As Anton has already stated, we've > discussed using the 4.4BSD LFS code as a basis and start out with porting > it to Linux. But after having had a look at the BSD LFS sources I > concluded that porting BSD LFS to Linux would not be a feasible approach > because there are some differences in the buffer cache handling. > > Furthermore, BSD LFS is tied to the FFS filesystem, while the filesystem > most widely used with Linux is the ext2 FS. > > But I've tried to design dtfs in a way that should allow the > implementation of various "filesystem personalities" (like ext2 or FFS) on > top of a generic core providing logging functionality. > > As I'm sending out this mail I'm uploading an updated version of the dtfs > documentation paper that also contains a description of the implementation > of the dtfs core and a discussion of the interface between the generic > core and the implementation of a filesystem personality on top of it. > I think that this information could be helpful for you. > > You'll find this paper (version 1.6) on the dtfs homepage: > > http://www.complang.tuwien.ac.at/czezatke/dtfspapers.html > > Maybe it would be worth considering a port of the dtfs core to 4.4BSD > since the dtfs core uses only a rather limited interface to the underlying > buffer cache/block device drivers, but I'm not sure whether this is what > you're heading for... (BSD is providing functionality that is not > currently present in Linux as far as the buffer cache management is > concerned, so porting from Linux to BSD should be easier than vice versa). > > One thing that could IMHO be shared with only minor modifications between > 4.4BSD and Linux is the implementation of the cleaner. > > Anyhow, I think that any kind of cooperation (sharing code/ideas) is > beneficial for both sides and I'd be glad to stay in touch with you. > > I could also inform you of any significant advances in the development of > dtfs in the future, if you like. > > Christian > > -- > ---------------------------------------------------- > / Christian Czezatke \ > --------------------------------------------------------- > Our continuing mission: To seek out knowldge of C, explore > strange Un*x commands, to boldly code where no-on has manpage 4. > - the Linux Programmer's Guide > To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-fs" in the body of the message From owner-freebsd-fs Mon Aug 31 17:26:52 1998 Return-Path: Received: (from majordom@localhost) by hub.freebsd.org (8.8.8/8.8.8) id RAA10612 for freebsd-fs-outgoing; Mon, 31 Aug 1998 17:26:52 -0700 (PDT) (envelope-from owner-freebsd-fs@FreeBSD.ORG) Received: from allegro.lemis.com (allegro.lemis.com [192.109.197.134]) by hub.freebsd.org (8.8.8/8.8.8) with ESMTP id RAA10586 for ; Mon, 31 Aug 1998 17:26:47 -0700 (PDT) (envelope-from grog@freebie.lemis.com) Received: from freebie.lemis.com (freebie.lemis.com [192.109.197.137]) by allegro.lemis.com (8.9.1/8.9.0) with ESMTP id JAA25595; Tue, 1 Sep 1998 09:55:38 +0930 (CST) Received: (from grog@localhost) by freebie.lemis.com (8.9.1/8.9.0) id JAA07526; Tue, 1 Sep 1998 09:55:37 +0930 (CST) Message-ID: <19980901095537.Y606@freebie.lemis.com> Date: Tue, 1 Sep 1998 09:55:37 +0930 From: Greg Lehey To: Vedad Kajtaz , freebsd-fs@FreeBSD.ORG Subject: ccd partitions (was: Needs BSD4.2 FastFile System ID number) References: <35EAF660.A99FE8C2@mankind.net> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii X-Mailer: Mutt 0.91.1i In-Reply-To: <35EAF660.A99FE8C2@mankind.net>; from Vedad Kajtaz on Mon, Aug 31, 1998 at 09:15:45PM +0200 WWW-Home-Page: http://www.lemis.com/~grog Organization: LEMIS, PO Box 460, Echunga SA 5153, Australia Phone: +61-8-8388-8286 Fax: +61-8-8388-8725 Mobile: +61-41-739-7062 Sender: owner-freebsd-fs@FreeBSD.ORG Precedence: bulk X-Loop: FreeBSD.org [Format autorecovered at freebie.lemis.com] On Monday, 31 August 1998 at 21:15:45 +0200, Vedad Kajtaz wrote: > > i'm trying to install a ccd mirror driver on two scsi discs, but i > need the BSD4.2 FFS filesystem ID (requested by label editor), as > ccd doc suggests it's the only fs ccd would work with. You sound confused. I don't know what you mean by a "filesystem ID", but I'd think of a magic number. You don't need that for setting up ccd, but you do need the partition to be of type 4.2BSD. Do that with disklabel -e. Of course, you might prefer to try vinum. See http://www.lemis.com/vinum.html. Note that vinum requires the partition to be of type "unused". Requiring it to be 4.2BSD helps you shoot yourself in the foot. Greg -- See complete headers for address, home page and phone numbers finger grog@lemis.com for PGP public key To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-fs" in the body of the message