From owner-freebsd-stable Thu Jun 17 13:57:33 1999 Delivered-To: freebsd-stable@freebsd.org Received: from dingo.cdrom.com (dingo.cdrom.com [204.216.28.145]) by hub.freebsd.org (Postfix) with ESMTP id 8E7E7155A4 for ; Thu, 17 Jun 1999 13:57:31 -0700 (PDT) (envelope-from mike@dingo.cdrom.com) Received: from dingo.cdrom.com (localhost.cdrom.com [127.0.0.1]) by dingo.cdrom.com (8.9.3/8.8.8) with ESMTP id NAA00513; Thu, 17 Jun 1999 13:51:48 -0700 (PDT) (envelope-from mike@dingo.cdrom.com) Message-Id: <199906172051.NAA00513@dingo.cdrom.com> X-Mailer: exmh version 2.0.2 2/24/98 To: chad@DCFinc.com Cc: mike@smith.net.au (Mike Smith), jedgar@fxp.org, sec@42.org, des@flood.ping.uio.no, freebsd-stable@FreeBSD.ORG Subject: Re: / not properly unmounted ? In-reply-to: Your message of "Thu, 17 Jun 1999 10:00:25 PDT." <199906171700.KAA29113@freeway.dcfinc.com> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Date: Thu, 17 Jun 1999 13:51:48 -0700 From: Mike Smith Sender: owner-freebsd-stable@FreeBSD.ORG Precedence: bulk X-Loop: FreeBSD.ORG > As I recall, Mike Smith wrote: > > > The first complaint was that the power-down was catching disk stuff > > > still in cache. Setting an arbitrary delay on the way down seems > > > inefficient at best, and possibly not sufficient. How about instead > > > just making sure all buffers are flushed before the power-down is > > > allowed to to occur, however long that takes? > > > > You can't do this, because it's the _disk_ that holds the cached data. > > Ok, I missed something in the original post? He's using some kind > of caching (or RAID) controller? No. Only the worst disks these days don't have onboard cache. -- \\ The mind's the standard \\ Mike Smith \\ of the man. \\ msmith@freebsd.org \\ -- Joseph Merrick \\ msmith@cdrom.com To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-stable" in the body of the message