Subject: Re: Disk w/o geometry label.
To: None <thorpej@nas.nasa.gov>
From: Matt Ragan <matt@ibmoto.com>
List: port-sparc
Date: 12/17/1995 22:48:03
>
>Dave ...
>
>Can you please e-mail me the output of dmesg? I'm interested in what
>sort of diagnostic messages might be present. Also, are they SCSI-I or
>SCSI-II?
>
>The MI SCSI code uses "MODE_SENSE page 4" (rigid geometry) to get that
>information. I believe we're using the 6-byte version of this command
>described by the SCSI-I standard. I was reading though the SCSI-II draft
>yesterday (for other reasons) and noticed that there are 10- and 12-byte
>versions of this command now, as well (the motivation behind this isn't
>crystal-clear to me, but whatever).
>
>The MODE_SENSE command is not listed as "mandatory" in the draft, but
>rather "device dependent" (I think .. double-check today). It's entirely
>possible that this drive abuses this "feature", or has buggy firmware.
>(Ask me about IBM drives and buggy firmware sometime :-)
>
>--------------------------------------------------------------------------
>Jason R. Thorpe thorpej@nas.nasa.gov
>NASA Ames Research Center Home: 408.866.1912
>NAS: M/S 258-6 Work: 415.604.0935
>Moffett Field, CA 94035 Pager: 415.428.6939
>
Jason -
Here is the output that I get from my dmesg. FYI - the drive works just
fine, other than the mode sense error that the disklabel compensates for:
ahb0 targ 1 lun 0: <IBM, 0661467, G l> SCSI2 0/direct fixed
sd1 at scsibus0sd1(ahb0:1:0): illegal request, data = 00 00 00 00 24 00 00 00 00 00 00 00 01 32 00 00 00 00 00 00 00 00 00 00
sd1: could not mode sense (4); using fictitious geometry
: 382MB, 382 cyl, 64 head, 32 sec, 512 bytes/sec
--
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Matt Ragan (matt@ibmoto.com) Motorola/IBM Somerset PowerPC Design Center
Network Administrator Systems/Network Engineering (512) 795-7298
9737 Great Hills Trail Austin, Tx 78759 FAX (512) 795-7519
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