Return to BSD News archive
Path: euryale.cc.adfa.oz.au!newshost.carno.net.au!harbinger.cc.monash.edu.au!news.mira.net.au!news.netspace.net.au!news.mel.connect.com.au!news.syd.connect.com.au!phaedrus.kralizec.net.au!godzilla.zeta.org.au!not-for-mail From: bde@zeta.org.au (Bruce Evans) Newsgroups: comp.unix.bsd.freebsd.misc Subject: Re: ufs, ext2fs sizes Date: 27 Jun 1997 03:43:50 +1000 Organization: Kralizec Internet Lines: 33 Message-ID: <5ou9om$mqg$1@godzilla.zeta.org.au> References: <33AF89E9.513B63BD@info13.polytechnique.fr> <5otrdo$dlh@ui-gate.utell.co.uk> NNTP-Posting-Host: godzilla.zeta.org.au Xref: euryale.cc.adfa.oz.au comp.unix.bsd.freebsd.misc:43570 In article <5otrdo$dlh@ui-gate.utell.co.uk>, Brian Somers <brian@awfulhak.org, brian@utell.co.uk> wrote: >In article <33AF89E9.513B63BD@info13.polytechnique.fr>, > ClimServ <climserv@info13.polytechnique.fr> writes: >> - what is the maximum size of an ufs filesystem ? > >9223372036854775808 bytes. Many wrong answers have been given to this question. The limit is 2^31 * DEV_BSIZE, where DEV_BSIZE is normally 512, i.e., normally 1TB. The file size is currently limited mainly by triple indirect blocks never actually being allocated. This gives a maximum file size of about 32GB for a file system with a block size of 8K. >> - if I choose ext2fs instead of ufs, can I take full advantage, under >> FreeBSD, of the Terabyte filesystem size of ext2fs ? > >Eh ? A terabyte is relatively small ! What's the "full advantage" ? ext2fs has the same file system size limit as ufs for the same reasons. The file size for ext2fs is limited to 2^32 by the 32-bit size field in the inode and to 2^31 by bugs in the code. >> - are ext2fs tools (mke2fs, e2fsck) available under FreeBSD ? > >Not in my path (RELENG_2_2). The Linux version of more or less work under the Linux emulator. You have to give block counts explicitly because some ioctls don't work. -- Bruce Evans bde@zeta.org.au