Date: Tue, 6 Oct 1998 22:15:21 +0200 From: "Johan Granlund" <johan@granlund.nu> To: "Kenneth D. Merry" <ken@plutotech.com>, dmlb@ragnet.demon.co.uk Cc: freebsd-current@FreeBSD.ORG Subject: Re: Exabyte 8200 and CAM, Take 2 Message-ID: <199810062015.WAA00311@phoenix.granlund.nu> In-Reply-To: <199810052246.QAA28339@panzer.plutotech.com> References: <XFMail.981005205330.dmlb@computer.my.domain> from Duncan Barclay at "Oct 5, 98 08:53:30 pm"
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Bingo That did it. I haven't tried to use the drive, but it survives the probe. I played around a little with the patch and found out that multi-lun is not a factor, but serial number requests is. Tried both with and without multi-lun support enabled on the controller and with only "CAM_QUIRK_SERIAL" in the quirkentry. With multilun support enabled the tape drive shows up on all luns in the bios probe, but only at lun 0 when probed by CAM as it should. Food for thought: The tapedrive survived the probe with (duncans) ncr controller but dies horrible with my adaptec 2940 one. /Johan > Duncan Barclay wrote... > > > > On 05-Oct-98 Johan Granlund wrote: > > > > > > [Long Snip] > > > > > > > > >> Strange, my Exabyte 8200 probes fine with no lockups, I have a NCR810 > > >> card. Current as of about 06:30GMT 2/10/98. Exabyte has same firmware > > >> as yours. > > > > Having now got some tapes for this drive it locks up when being _used_ > > under CAM. It probes fine though. > > It isn't surprising that y'all are having trouble with 8200's under CAM. > The tape driver needs some work before it will work around all the bugs in > all the old (and often broken) tape drives out there. > > Hopefully we'll be able to do something about it before 3.0, but for now, > just realize that it's a little broken. > > I've attached a patch to disable multi-lun probing and serial number > requests; that should allow the drive to at least probe properly. > > We'll probably end up disabling serial number inquiries and multi-lun > probing for all SCSI-1 devices. (need to adjust the transport layer quirk > mechanism to handle that, first) > > Ken > -- > Kenneth Merry > ken@plutotech.com > ___________________________________________________________ Internet: johan@granlund.nu I don't even speak for myself To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-current" in the body of the message
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