From owner-freebsd-questions Fri Mar 1 12:36:12 2002 Delivered-To: freebsd-questions@freebsd.org Received: from mired.org (dsl-64-192-6-133.telocity.com [64.192.6.133]) by hub.freebsd.org (Postfix) with SMTP id 301B837B41A for ; Fri, 1 Mar 2002 12:36:06 -0800 (PST) Received: (qmail 14460 invoked by uid 100); 1 Mar 2002 20:36:03 -0000 MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7bit Message-ID: <15487.58931.330759.467126@guru.mired.org> Date: Fri, 1 Mar 2002 14:36:03 -0600 To: Cliff Sarginson Cc: questions@freebsd.org Subject: Re: 15...14...13...12 SCSI drives getting comfortable... In-Reply-To: <73499105@toto.iv> X-Mailer: VM 6.90 under 21.1 (patch 14) "Cuyahoga Valley" XEmacs Lucid X-face: "5Mnwy%?j>IIV\)A=):rjWL~NB2aH[}Yq8Z=u~vJ`"(,&SiLvbbz2W`;h9L,Yg`+vb1>RG% *h+%X^n0EZd>TM8_IB;a8F?(Fb"lw'IgCoyM.[Lg#r\ From: "Mike Meyer" X-Delivery-Agent: TMDA/0.46 (Python 2.2; freebsd-4.5-STABLE-i386) Sender: owner-freebsd-questions@FreeBSD.ORG Precedence: bulk List-ID: List-Archive: (Web Archive) List-Help: (List Instructions) List-Subscribe: List-Unsubscribe: X-Loop: FreeBSD.ORG Cliff Sarginson types: > On Fri, Mar 01, 2002 at 07:07:06PM +0000, Mark Drayton wrote: > > Rick Hamell (hamellr@heorot.1nova.com) wrote: > > > > Why does FreeBSD waut 15 seconds for SCSI devices to "settle". I > > > > noticed NetBSD considers 2 seconds suffient to find the comfy chair. > > > > > > For older drives and controllers, especially Tape drives... I believe > > > you can reset that in the Kernal. > > > > You can indeed: > > > > options SCSI_DELAY=15000 #Delay (in ms) before probing SCSI > > > Oh, I know it is configurable, but being a curious sort of person I > often wonder where these numbers come from, 15 seconds sounds like a > lifetime in this context :). Paranoia? Old DEC rz23's that didn't spin up on power on, but waited until they were told to do so, and wouldn't answer a probe until then? Given that I don't reboot systems with SCSI drives more than once a week unless I'm debugging a problem, it doesn't seem to matter much. http://www.mired.org/home/mwm/ Independent WWW/Perforce/FreeBSD/Unix consultant, email for more information. To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-questions" in the body of the message