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Path: euryale.cc.adfa.oz.au!newshost.carno.net.au!harbinger.cc.monash.edu.au!munnari.OZ.AU!news.ecn.uoknor.edu!solace!nntp.uio.no!www.nntp.primenet.com!nntp.primenet.com!EU.net!Germany.EU.net!Dortmund.Germany.EU.net!interface-business.de!usenet From: j@ida.interface-business.de (J Wunsch) Newsgroups: comp.os.linux.advocacy,comp.unix.bsd.misc Subject: Re: Linux vs BSD Date: 7 Feb 1997 17:22:14 GMT Organization: interface business GmbH, Dresden Lines: 33 Message-ID: <5dfoc6$cre@innocence.interface-business.de> References: <32DFFEAB.7704@usa.net> <32F378FC.41C67EA6@freebsd.org> <slrn5ekm26.5ml.ralsina@ultra7.unl.edu.ar> <32F68743.2781E494@freebsd.org> <slrn5feb63.93l.ralsina@ultra7.unl.edu.ar> <32F73973.167EB0E7@freebsd.org> <slrn5fejrn.353.bet@onyx.interactive.net> <5d8f4p$jto@junkie.gnofn.org> <5dd5n7$72n@innocence.interface-business.de> <5ddgno$nlb@dutch.eng.ox.ac.uk> Reply-To: joerg_wunsch@interface-business.de (Joerg Wunsch) NNTP-Posting-Host: ida.interface-business.de X-Newsreader: knews 0.9.6 X-Phone: +49-351-31809-14 X-Fax: +49-351-3361187 X-PGP-Fingerprint: DC 47 E6 E4 FF A6 E9 8F 93 21 E0 7D F9 12 D6 4E Xref: euryale.cc.adfa.oz.au comp.os.linux.advocacy:82710 comp.unix.bsd.misc:2334 paul@dutch.eng.ox.ac.uk (Paul D Thomas) wrote: > The reason we have async writes in linux (metadata gets written more > regularly, though) is that it is faster and *reliable*. The reason we have async metadata updates in FreeBSD (data updates are always async, mind you) is that it is faster and *reliable*. :-) > I have never seen corruption of the filesystem which can't be repaired > by fsck. ``Absense of evidence is no evidence of absence.'' (Not by me.) Sure, there are only rare occasions where it crashes, but even the potential possibility that it will cause more damage in the case of a crash is reason enough for us to not make it the default. Note, that's the only difference: it's not the default, but an option. I run some of my less important filesystems with async metadata updates myself, and sure, i also have yet to see a serious corruption, despite of it being a development box that can sometimes also crash during kernel development. But pray, let's not start this whole argumentation war again. We do have different opinions about the safety vs. performance tradeoffs here, and neither side will likely change their position in this. -- J"org Wunsch Unix support engineer joerg_wunsch@interface-business.de http://www.interface-business.de/~j