From owner-freebsd-fs Mon Jun 29 03:09:53 1998 Return-Path: Received: (from majordom@localhost) by hub.freebsd.org (8.8.8/8.8.8) id DAA15603 for freebsd-fs-outgoing; Mon, 29 Jun 1998 03:09:53 -0700 (PDT) (envelope-from owner-freebsd-fs@FreeBSD.ORG) Received: from parkplace.cet.co.jp (parkplace.cet.co.jp [202.32.64.1]) by hub.freebsd.org (8.8.8/8.8.8) with ESMTP id DAA15598 for ; Mon, 29 Jun 1998 03:09:50 -0700 (PDT) (envelope-from michaelh@cet.co.jp) Received: from localhost (michaelh@localhost) by parkplace.cet.co.jp (8.8.8/CET-v2.2) with SMTP id KAA01384; Mon, 29 Jun 1998 10:08:42 GMT Date: Mon, 29 Jun 1998 19:08:42 +0900 (JST) From: Michael Hancock To: Cejka Rudolf cc: freebsd-fs@FreeBSD.ORG, johnh@isi.edu Subject: Re: Stackable filesystems and SunOS In-Reply-To: <199806250845.IAA20990@sts.dcse.fee.vutbr.cz> Message-ID: MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII Sender: owner-freebsd-fs@FreeBSD.ORG Precedence: bulk X-Loop: FreeBSD.org On Thu, 25 Jun 1998, Cejka Rudolf wrote: > Heh. > > There _is_ basic small compression layer for FreeBSD 3.0. I made it. > You can look at http://www.stud.fee.vutbr.cz/~xcejka00/dp_cejka.tar.gz > _BUT_: Cool!!! > * Sorry, it is in czech - my english capabilities are not sufficient > and I have no time to make czech -> english conversions. But program > part (comments) is in english. > > * My layer is totally unusable at this time because it is builded on > nullfs basis and nullfs & FreeBSD 3.0 kernel is broken... (kern/6465). We have name-object coherency problems when using layering. We don't address these issues at the moment. I think Tor Egge had some patches that might fix the specific case of nullfs, but a general solution will require some work. > * It needs too much further work to make it good... > > > - structuring CD-ROM file systems as a set of layers > > (I don't know how hard this would be...) Regards, Mike Hancock To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-fs" in the body of the message