Date: Wed, 15 Nov 1995 17:59:33 -0800 (PST) From: Julian Elischer <julian@ref.tfs.com> To: jaykuri@interaccess.com (Jay Kuri) Cc: freebsd-scsi@FreeBSD.ORG Subject: Re: Help! My SCSI-2 CD rom is timing out Message-ID: <199511160159.RAA00416@ref.tfs.com> In-Reply-To: <Pine.BSI.3.91.951115164047.21271A-100000@flowbee.interaccess.com> from "Jay Kuri" at Nov 15, 95 05:06:48 pm
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you should make a kernel with SCSIDEBUG (options SCSIDEBUG) then do: scsi -f /dev/rcd0.ctl -d 15 this should make the kernel VERY VERBOSE about any operations on that device and should let us work out what is failing use dmesg to get the debug output to a file. > > > I have made what may or may not be a worthwhile discovery in reference > to this drive. It appears that if the CD-Rom is spun-up, it will mount > the drive without a hitch. However, if the drive is not spun up > already, it does not mount... instead the 'cdo(aic0:1:0): timed out' > message comes up. This is not really consistant.. I don't know how to > force the drive to spin up. But if I try to mount the cd and it times > out, many times if I re-issue the mount command as soon as I get the > prompt back, it will mount. This is not by any means absolutely > consistant. But it is the only way I can mount it at all. Could it be > that the spin-up scsi command is not being sent? or perhaps that the > scsi-subsystem is not tolerant enough with timings to let the cd-rom spin > up before erroring? Just fumbling along here and guessing, > > Jay K. >
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