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Xref: sserve comp.unix.aix:22888 comp.unix.aux:9535 comp.unix.bsd:12065 comp.unix.cray:795 comp.unix.sys5.r4:2954 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!spool.mu.edu!enterpoop.mit.edu!eru.mt.luth.se!lunic!sunic!mcsun!sun4nl!fwi.uva.nl!casper From: casper@fwi.uva.nl (Casper H.S. Dik) Newsgroups: comp.unix.aix,comp.unix.aux,comp.unix.bsd,comp.unix.cray,comp.unix.sys5.r4,cmp.unix.xenix Subject: Re: Support for 4.2BSD Fast File System Keywords: bsd filesystem Message-ID: <1ukgtd$gmr@mail.fwi.uva.nl> Date: 3 Jun 93 09:39:57 GMT References: <C7yBIu.Bt1@iupui.edu> <1ugqo1$5vl@genesis.MCS.COM> <C815MC.10I@queernet.org> Distribution: inet Organization: FWI, University of Amsterdam Lines: 26 NNTP-Posting-Host: adam.fwi.uva.nl 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). Problems youw ill see when moving disks with FFS from one host to another are: - endian problems FFS is byte order dependent. Forget about moving your 386x disks to a Sun or vice versa. - disk labelling the table of contents of a disk which contains the partition table and other info is not a fixed format. This will differ from vendor to vendor. The FFS format has changed over time. Casper