Return to BSD News archive
Xref: sserve comp.unix.aix:22932 comp.unix.aux:9549 comp.unix.bsd:12068 comp.unix.cray:798 comp.unix.sys5.r4:2965
Newsgroups: comp.unix.aix,comp.unix.aux,comp.unix.bsd,comp.unix.cray,comp.unix.sys5.r4,cmp.unix.xenix
Path: sserve!newshost.anu.edu.au!munnari.oz.au!constellation!osuunx.ucc.okstate.edu!moe.ksu.ksu.edu!ux1.cso.uiuc.edu!howland.reston.ans.net!agate!ames!sgi!sgigate!sgiblab!unpc!rogerk
From: rogerk@queernet.org (Roger B.A. Klorese)
Subject: Re: Support for 4.2BSD Fast File System
Message-ID: <C823vt.7up@queernet.org>
Date: Thu, 3 Jun 1993 17:43:05 GMT
Distribution: inet
References: <1ugqo1$5vl@genesis.MCS.COM> <C815MC.10I@queernet.org> <1ukgtd$gmr@mail.fwi.uva.nl>
Organization: QueerNet
Keywords: bsd filesystem
Lines: 26
In article <1ukgtd$gmr@mail.fwi.uva.nl> casper@fwi.uva.nl (Casper H.S. Dik) writes:
>rogerk@queernet.org (Roger B.A. Klorese) writes:
>
>>In article <1ugqo1$5vl@genesis.MCS.COM> karl@genesis.MCS.COM (Karl Denninger) writes:
>>>The "ufs" in SVR4 releases is nearly 100% BSD FFS in terms of its
>>>implementation. Blocks/frags, cylinder groups, inodes > 64k, long
>>>filenames, symlinks, etc.
>
>>However, its on-disk format is *not* identical, and UFS/FFS file systems
>>cannot be physically transported between different operating systems.
>
>I'm not sure about this. The SunOS format (BSD) can be used in
>Solaris 2.x (SYSV).
This is a special case; Sun decided to keep their on-disk format
identical. You cannot, however, move a filesystem image between
SVR4/Intel and Solaris 2, or SVR4/Intel and SunOS, or even (no byte
order issues) Mips RISCos and either Sun operating system. The
exact on-disk layouts differ somewhat.
--
ROGER B.A. KLORESE +1 415 ALL-ARFF
rogerk@unpc.QueerNet.ORG {ames,decwrl,pyramid}!sgiblab!unpc!rogerk
"Sometimes you wake up. Sometimes the fall kills you. And sometimes, when
you fall, you fly." -- N. Gaiman