Date: Mon, 9 Feb 1998 18:56:38 +0900 (JST) From: Michael Hancock <michaelh@cet.co.jp> To: "Alton, Matthew" <Matthew.Alton@anheuser-busch.com> Cc: fs@FreeBSD.ORG, hackers@FreeBSD.ORG Subject: Re: Filesystem hacking Message-ID: <Pine.SV4.3.95.980209183610.2237A-100000@parkplace.cet.co.jp> In-Reply-To: <31B3F0BF1C40D11192A700805FD48BF9C33287@STLABCEXG011>
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On Fri, 30 Jan 1998, Alton, Matthew wrote: > I have decided to code up an IBM-style journaling filesystem > (jfs) with maximum portability for free unices. While I'm at it Cool. Portability might be a challenge though, the vnode interface varies quite a bit between the various Unices. > I had might as well have the clean-bits map to a PP/extent > disk arrangement which will act as a useful abstraction for a > Logical Volume Manager / Veritas -esque disk management > system which I also find interesting enough to code up. > > This is not an attempt to morph FreeBSD into AIX by any > means. It is just an interesting project which I think may be > of use to hackers. > > This month (02/98) I will explore the GNU HURD OS to see if > their goal of creating an OS which would allow me to imple- > ment a filesystem in user space has been realized. If it has > not, I will use my normal FreeBSD 2.2.2 i386/40 and NetBSD > 1.3 Sun 3/50 & 3/80 development boxes. See the link below for a description of stacking, I was one of the people that was talking about doing ktou/utok layers in FBSD but I haven't gotten around to it yet. http://www.isi.edu/~johnh/SOFTWARE/UCLA_STACKING/ Doing a terminal layer in userland would be a pretty good challenge. While GNU HURD is interesting, for a production environment you should probably stick with doing most of it in the kernel. You might also want to look at the CryptoFS, I think it's in the ports tree, for an example of an FS that piggybacks on NFS. > Please let me know if I am duplicating effort and provide me > with relevant pointers. > P.S. it's good to see a FreeBSDer from AB. Any chance of converting Scott Smallie? ;-) -- michaelh@cet.co.jp http://www.cet.co.jp CET Inc., Daiichi Kasuya BLDG 8F, 2-5-12 Higashi Shinbashi, Minato-ku, Tokyo 105 Japan Tel: +81-3-3437-1761 Fax: +81-3-3437-1766 To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-fs" in the body of the message
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