Date: Tue, 6 Jun 1995 21:40:28 +0200 (MET DST) From: hm@ernie.altona.hamburg.com (Hellmuth Michaelis) To: imb@scgt.oz.au (michael butler) Cc: dufault@hda.com, freebsd-hackers@freebsd.org (FreeBSD Hackers) Subject: Re: Quantum hardware errors (Deferred Error: HARDWARE FAILURE asc:87,0) Message-ID: <m0sJ4UG-0002OfC@ernie.altona.hamburg.com> In-Reply-To: <199506061603.CAA02057@asstdc.scgt.oz.au> from "michael butler" at Jun 7, 95 02:03:44 am
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>From the keyboard of michael butler: > > Peter Dufault writes: > > > # scsi -f rsd0.ctl -m 8 > > > WCE: 1 <--- (write cache enabled, for the -hackers folks) [...] > > In 2.1 the system will sanity check the mode page settings during > > boot and will comment on anything it thinks is set wrong. > > Warning .. OK .. but please do not mandate such a change, some drives > simply do not support the modification of these parameters, e.g. .. > > /kernel: (aha0:0:0): "MICROP 2217-15MZ1001904 HQ30" type 0 fixed SCSI 2 > /kernel: sd0(aha0:0:0): Direct-Access 1685MB (3450902 512 byte sectors) >From ''SCSI Implementation in Micropolis "MZR" Products'' Working Draft - Document No. 110366 Page 2-132: "Two versions of Page Code 08h exist (SCSI-I/CCS and Micropolis unique). Switching between the two pages is accomplished via the CHANGE DEFINITION command." The SCSI-I/CCS page looks like the direct access page 8 in the SCSI-II spec X3T9.2/375R revision 10k page 204. The Micropolis unique looks very Micropolis unique ;-) In the SCSI-I/CCS page 8, only the RCD and the minimum prefetch field are supported, all others are "Not used". In the Micropolis unique version, some 2 or 3 more unimportant fields are supported. hellmuth -- Hellmuth Michaelis hm@altona.hamburg.com Hamburg, Europe (A)bort, (R)etry, (I)nstall BSD ?
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