Date: Fri, 1 Mar 2002 14:36:03 -0600 From: "Mike Meyer" <mwm-dated-1015446963.6817d1@mired.org> To: Cliff Sarginson <csfbsd@raggedclown.net> Cc: questions@freebsd.org Subject: Re: 15...14...13...12 SCSI drives getting comfortable... Message-ID: <15487.58931.330759.467126@guru.mired.org> In-Reply-To: <73499105@toto.iv>
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Cliff Sarginson <csfbsd@raggedclown.net> 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. <mike -- Mike Meyer <mwm@mired.org> 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
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