Date: Fri, 17 Sep 1999 09:39:53 -0500 From: Dan Nelson <dnelson@emsphone.com> To: Pavel Roskin <pavel_roskin@geocities.com> Cc: freebsd-questions@FreeBSD.ORG Subject: Re: How to invalidate cache? Message-ID: <19990917093953.A53781@dan.emsphone.com> In-Reply-To: <Pine.LNX.4.10.9909171613140.32722-100000@intra.typhoon.spb.ru> References: <Pine.LNX.4.10.9909171613140.32722-100000@intra.typhoon.spb.ru>
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In the last episode (Sep 17), Pavel Roskin said: > The installer writes directly to the disk. The questions is: what > precautions should be done before and after writing to /dev/rwd0 ? > (or should that be /dev/wd0 ?) > > More specifically, is it possible to invalidate the cache for the > whole disk? Is it necessary? Neither diskalbel nor boot0cfg seem to do anything apart from open /dev/rda0, write, close. The /dev/r* devices imply non-buffered access. At least when I open and read or write, I see the SCSI light blink immediately. -- Dan Nelson dnelson@emsphone.com To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-questions" in the body of the message
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