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Path: euryale.cc.adfa.oz.au!newshost.anu.edu.au!harbinger.cc.monash.edu.au!hobyah.cc.uq.oz.au!bunyip.cc.uq.oz.au!munnari.OZ.AU!news.ecn.uoknor.edu!paladin.american.edu!gatech!newsfeed.internetmci.com!info.ucla.edu!library.ucla.edu!agate!reason.cdrom.com!usenet From: "Jordan K. Hubbard" <jkh@FreeBSD.org> Newsgroups: comp.os.linux.development.apps,comp.os.linux.development.system,comp.os.linux.x,comp.os.linux.hardware,comp.os.linux.setup,comp.unix.bsd.386bsd.misc,comp.unix.bsd.bsdi.misc,comp.unix.bsd.netbsd.misc,comp.unix.bsd.freebsd.misc Subject: Re: Why to not buy Matrox Millennium Date: Fri, 05 Apr 1996 23:06:28 -0800 Organization: Walnut Creek CDROM Lines: 27 Message-ID: <316617F4.2781E494@FreeBSD.org> References: <4jn4qp$6p@darkstar.my.lan> <4k0m0f$68j@hoopoe.psc.edu> <4k0r5l$g2@siberia.gtri.gatech.edu> <4k3rha$m9t@clark.net> <4k3scl$qc9@hoopoe.psc.edu> NNTP-Posting-Host: time.cdrom.com Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7bit X-Mailer: Mozilla 3.0b2 (X11; I; FreeBSD 2.2-CURRENT i386) To: Peter Berger <peterb@hoopoe.psc.edu> Xref: euryale.cc.adfa.oz.au comp.os.linux.development.apps:14176 comp.os.linux.development.system:20723 comp.os.linux.x:28614 comp.os.linux.hardware:35495 comp.os.linux.setup:49104 comp.unix.bsd.386bsd.misc:462 comp.unix.bsd.bsdi.misc:3006 comp.unix.bsd.netbsd.misc:2767 comp.unix.bsd.freebsd.misc:16682 Peter Berger wrote: > Linux uses asynchronous metadata updates, which the *BSD crowd has > always insisted puts you at a greater risk of losing data in the > event of a crash. My understanding is that FreeBSD will be making > this an option...whether async metadata updates are an improvement > or not depends on your needs. I certainly will like having the > option, anyway. This is already the case in 2.2 (and has been retrofitted into 2.1-stable, from which the next mainstream release will be derived). You can tweak the bit on and off for a given filesystem and visually see the difference as something like a large tar file extracts - it's quite impressive. Simply: mount -u -o async /some/existing/fs To turn it on for a filesystem that's already mounted, or live a little more dangerously and add it to the filesystem options in /etc/fstab. The installation (sysinstall) is one area where the new async feature is used - all filesystems are initially mounted async during extraction of the release since if the power goes out during installation you can simply install again. The increase in installation speed is strikingly noticable! -- - Jordan Hubbard President, FreeBSD Project