Date: Mon, 17 Nov 1997 11:25:08 -0800 (PST) From: Doug White <dwhite@gdi.uoregon.edu> To: Greg Hormann <ghormann@nix.kconline.com> Cc: questions@FreeBSD.ORG Subject: Re: async fs? Message-ID: <Pine.BSF.3.96.971117112455.10644D-100000@gdi.uoregon.edu> In-Reply-To: <Pine.BSI.3.95.971117131018.4448A-100000@wawasee.read.indiana.edu>
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On Mon, 17 Nov 1997, Greg Hormann wrote: > > Are you aware that losing your system while you are running async is > > usually fairly safe (often you lose no files, or if you were very busy > > doing disk activity, maybe a few), but if you are mounted async, you > > could possibly lose much, much more? It'll certainly increase > > performance, but you'd better be willing to pay the price. > > What *exactly* does async do? Does async I/O just mean that Meta data is > not immediately written to disk? I assume that FBSD buffers data, but > writes Meta data to disk immediately like most Unix file systems. Correct on both counts. Doug White | University of Oregon Internet: dwhite@resnet.uoregon.edu | Residence Networking Assistant http://gladstone.uoregon.edu/~dwhite | Computer Science Major
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