Date: Tue, 11 Jun 1996 21:55:12 +0200 From: se@zpr.uni-koeln.de (Stefan Esser) To: "matthew c. mead" <mmead@glock.com> Cc: hackers@freebsd.org Subject: Re: ST43400N Message-ID: <199606111955.AA13636@Sisyphos> In-Reply-To: "matthew c. mead" <mmead@Glock.COM> "Re: ST43400N" (Jun 11, 9:42)
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On Jun 11, 9:42, "matthew c. mead" wrote: } Subject: Re: ST43400N } M.R.Murphy writes: } } > > The drive hangs before a "fdisk sd1" completes, so I haven't } > > even gotten as far as writing a disktab for it, since I can't } > > get the probed geometry values for it. } } > When it probed 2777M, what else did it say? } } sd1(ncr0:2:0): Direct-Access } sd1(ncr0:2:0): FAST SCSI-2 100ns (10 Mb/sec) offset 8. } 2777MB (5688447 512 byte sectors) } } > What kind of SCSI interface do you have? What low-level } > formatters do you have available? } } It's an NCR810 controller. I don't believe it has any } low-level formatting capability, and I don't think it came with } much software, but I can see if it will let me lowlevel format } it. Do you think that the problem is the low-level formatting of } the device? Here's some info the sheet on the ST43400N has: } } ---- } ** Already low-level formatted at the factory with six spare sectors } per cylinder, one spare cylinders/unit, one system cylinder/unit, and } one diagnostic cylinder/unit. } ---- The NCR can be used to low level format any SCSI drive with the "scsiformat" command, though I doubt it will make much of a difference. If you are running a -current kernel, then please try one built with "options FAILSAFE". This will disable use of tagged command queues, which are the most likely cause of the problem you report. If the drive works with tags disabled, then I'll send further directions to find out whether it is possible to work around that problem. (You may comment out the call to scsi_start_unit() in /sys/scsi/sd.c for a test.) Regards, STefan -- Stefan Esser, Zentrum fuer Paralleles Rechnen Tel: +49 221 4706021 Universitaet zu Koeln, Weyertal 80, 50931 Koeln FAX: +49 221 4705160 ============================================================================== http://www.zpr.uni-koeln.de/~se <se@ZPR.Uni-Koeln.DE>
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