Date: Tue, 13 Mar 2001 10:38:30 +0100 (CET) From: Soren Schmidt <sos@freebsd.dk> To: bright@wintelcom.net (Alfred Perlstein) Cc: mwm@mired.org (Mike Meyer), Helge.Oldach@de.origin-it.com (Helge Oldach), oberman@es.net, mobile@FreeBSD.ORG, stable@FreeBSD.ORG Subject: Re: Disk I/O problem in 4.3-BETA Message-ID: <200103130938.KAA95619@freebsd.dk> In-Reply-To: <20010313013301.L29888@fw.wintelcom.net> from Alfred Perlstein at "Mar 13, 2001 01:33:01 am"
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It seems Alfred Perlstein wrote: > > Having write caching on is like having the disk ignore _any_ > filesystem's attempt to do softupdates/logging/delayed-order-writes > because the disk _lies_ to the OS about when a write is safely on > the disk. Hmm, I think the problem here is that the OS doesn't tell the drivers WHEN it expects to have data written to disk, I can't see why it should not be possible to have even softupdates say "now before I write this I expect everything so far to be on disk". -Søren To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-mobile" in the body of the message
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