From owner-freebsd-current Sun Nov 1 11:31:08 1998 Return-Path: Received: (from majordom@localhost) by hub.freebsd.org (8.8.8/8.8.8) id LAA21533 for freebsd-current-outgoing; Sun, 1 Nov 1998 11:31:08 -0800 (PST) (envelope-from owner-freebsd-current@FreeBSD.ORG) Received: from narnia.plutotech.com (narnia.plutotech.com [206.168.67.130]) by hub.freebsd.org (8.8.8/8.8.8) with ESMTP id LAA21527 for ; Sun, 1 Nov 1998 11:31:07 -0800 (PST) (envelope-from gibbs@narnia.plutotech.com) Received: (from gibbs@localhost) by narnia.plutotech.com (8.9.1/8.7.3) id MAA08917; Sun, 1 Nov 1998 12:24:09 -0700 (MST) Date: Sun, 1 Nov 1998 12:24:09 -0700 (MST) From: "Justin T. Gibbs" Message-Id: <199811011924.MAA08917@narnia.plutotech.com> To: Bernd Walter cc: current@FreeBSD.ORG Subject: Re: scsi disk (cam?) problems X-Newsgroups: pluto.freebsd.current In-Reply-To: <199811010132.UAA04810@bb01f39.unx.sas.com> <199811010208.TAA27408@panzer.plutotech.com> <19981101195246.10586@cicely.de> User-Agent: tin/pre-1.4-980818 ("Laura") (UNIX) (FreeBSD/3.0-BETA (i386)) Sender: owner-freebsd-current@FreeBSD.ORG Precedence: bulk X-Loop: FreeBSD.ORG In article <19981101195246.10586@cicely.de> you wrote: > Very interesting. > I've saw the same message yesterday: > Oct 31 20:10:18 cicely5 /kernel: (da23:ahc4:0:1:0): Invalidating pack What kinds of power supplies are all of you using? The reason the pack is being invalidated is that the drive in question is not responding within a selection timeout period (250ms). This is usually because of a device no being there, but I suspect in this case the cause is a parallel I/O load that pushes your drives to their maximum power rating, saturating your power supply leaving one or more devices starving for power. Any I/O attempted while the drive is going through a power-on reset is likely to fail with a selection timeout. I will change the error handler for the selection timeout case to return EIO instead of ENXIO, but this is just a temporary work around until we can provide a better pack invalidation scheme in the system. -- Justin To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-current" in the body of the message