Date: Tue, 11 Jun 1996 16:01:19 -0400 (EDT) From: "matthew c. mead" <mmead@Glock.COM> To: se@zpr.uni-koeln.de (Stefan Esser) Cc: hackers@freebsd.org Subject: Re: ST43400N Message-ID: <199606112001.QAA07036@Glock.COM> In-Reply-To: <199606111955.AA13636@Sisyphos> from "Stefan Esser" at Jun 11, 96 09:55:12 pm
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Stefan Esser writes: > 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. Hmm. That's the last hope I was clinging to. > 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.) Do the above two paragraphs apply to a 2.1.0-RELEASE kernel as well? This drive is on a 2.1.0-R system. -matt -- Matthew C. Mead mmead@goof.com http://www.goof.com/~mmead/
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