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.\" $OpenBSD: hd.4,v 1.3 2001/10/05 14:45:53 mpech Exp $
.\"
.\" Copyright (c) 1990, 1991, 1993
.\" The Regents of the University of California. All rights reserved.
.\"
.\" This code is derived from software contributed to Berkeley by
.\" the Systems Programming Group of the University of Utah Computer
.\" Science Department.
.\"
.\" Redistribution and use in source and binary forms, with or without
.\" modification, are permitted provided that the following conditions
.\" are met:
.\" 1. Redistributions of source code must retain the above copyright
.\" notice, this list of conditions and the following disclaimer.
.\" 2. Redistributions in binary form must reproduce the above copyright
.\" notice, this list of conditions and the following disclaimer in the
.\" documentation and/or other materials provided with the distribution.
.\" 3. All advertising materials mentioning features or use of this software
.\" must display the following acknowledgement:
.\" This product includes software developed by the University of
.\" California, Berkeley and its contributors.
.\" 4. Neither the name of the University nor the names of its contributors
.\" may be used to endorse or promote products derived from this software
.\" without specific prior written permission.
.\"
.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
.\" ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
.\" SUCH DAMAGE.
.\"
.\" from: @(#)rd.4 8.1 (Berkeley) 6/9/93
.\"
.Dd June 9, 1993
.Dt RD 4 hp300
.Os
.Sh NAME
.Nm hd
.Nd
.Tn CS/80
disk interface
.Sh SYNOPSIS
.Cd "hd* at hpibbus? slave ? punit ?"
.Sh DESCRIPTION
This is a generic
.Tn CS/80
disk driver.
Only a small number of possible
.Tn CS/80
drives are supported,
but others can easily be added by adding tables to the driver.
It is a typical block-device driver; see
.Xr physio 9 .
.Pp
The script
.Xr MAKEDEV 8
should be used to create the
.Nm hd
special files; consult
.Xr mknod 8
if a special file needs to be made manually.
.Sh DISK SUPPORT
The driver interrogates the controller
to determine the type of drive attached.
The driver recognizes the following drives:
7912, 7914, 7933, 7936, 7937, 7945,
.Tn 757A/B ,
.Tn 7958A/B ,
.Tn 7959B,
7962, 7963, 9122, 9134, 7912, 7936,
and 9122,
not all of which have been tested.
Special file names begin with
.Sq Li hd
and
.Sq Li rhd
for the block and character files respectively.
The second component of the name, a drive unit number in the range of zero to
seven, is represented by a
.Sq Li ?
in the disk layouts below.
The last component of the name is the file system partition and is designated
by a letter from
.Sq Li a
to
.Sq Li h
which also corresponds to a minor device number sets: zero to seven,
eight to 15, 16 to 23 and so forth for drive zero, drive two and drive
three respectively
(see physio 9 ) .
The location and size (in sectors) of the
partitions for these drives:
.Bl -column header diskx undefined length
.Tn 7945/7946 No partitions:
.Sy disk start length cyls
hd?a 112 15904 1-142
hd?b 16016 20160 143-322
hd?c 0 108416 0-967
hd?d 16016 40320 143-502
hd?e undefined
hd?f undefined
hd?g 36176 72240 323-967
hd?h 56336 52080 503-967
.Tn 9134D No partitions:
.Sy disk start length cyls
hd?a 96 15936 1-166
hd?b 16032 13056 167-302
hd?c 0 29088 0-302
hd?d undefined
hd?e undefined
hd?f undefined
hd?g undefined
hd?h undefined
.Tn 9122S No partitions:
.Sy disk start length cyls
hd?a undefined
hd?b undefined
hd?c 0 1232 0-76
hd?d undefined
hd?e undefined
hd?f undefined
hd?g undefined
hd?h undefined
.Tn 7912P No partitions:
.Sy disk start length cyls
hd?a 0 15904 0-70
hd?b 16128 22400 72-171
hd?c 0 128128 0-571
hd?d 16128 42560 72-261
hd?e undefined
hd?f undefined
hd?g 38528 89600 172-571
hd?h 58688 69440 262-571
.Tn 7914CT/P No partitions:
.Sy disk start length cyls
hd?a 224 15904 1-71
hd?b 16128 40320 72-251
hd?c 0 258048 0-1151
hd?d 16128 64960 72-361
hd?e 81088 98560 362-801
hd?f 179648 78400 802-1151
hd?g 56448 201600 252-1151
hd?h 81088 176960 362-1151
.Tn 7958A No partitions:
.Sy disk start length cyls
hd?a 252 16128 1-64
hd?b 16380 32256 65-192
hd?c 0 255276 0-1012
hd?d 16380 48384 65-256
hd?e 64764 100800 257-656
hd?f 165564 89712 657-1012
hd?g 48636 206640 193-1012
hd?h 64764 190512 257-1012
.Tn 7957A No partitions:
.Sy disk start length cyls
hd?a 154 16016 1-104
hd?b 16170 24640 105-264
hd?c 0 159544 0-1035
hd?d 16170 42350 105-379
hd?e 58520 54824 380-735
hd?f 113344 46200 736-1035
hd?g 40810 118734 265-1035
hd?h 58520 101024 380-1035
.Tn 7933H No partitions:
.Sy disk start length cyls
hd?a 598 16146 1-27
hd?b 16744 66976 28-139
hd?c 0 789958 0-1320
hd?d 83720 16146 140-166
hd?e 99866 165646 167-443
hd?f 265512 165646 444-720
hd?g 83720 706238 140-1320
hd?h 431158 358800 721-1320
.Tn 9134L No partitions:
.Sy disk start length cyls
hd?a 80 15920 1-199
hd?b 16000 20000 200-449
hd?c 0 77840 0-972
hd?d 16000 32000 200-599
hd?e undefined
hd?f undefined
hd?g 36000 41840 450-972
hd?h 48000 29840 600-972
.Tn 7936H No partitions:
.Sy disk start length cyls
hd?a 861 16359 1-19
hd?b 17220 67158 20-97
hd?c 0 600978 0-697
hd?d 84378 16359 98-116
hd?e 100737 120540 117-256
hd?f 220416 120540 256-395
hd?g 84378 516600 98-697
hd?h 341817 259161 397-697
.Tn 7937H No partitions:
.Sy disk start length cyls
hd?a 1599 15990 1-10
hd?b 17589 67158 11-52
hd?c 0 1116102 0-697
hd?d 84747 15990 53-62
hd?e 100737 246246 63-216
hd?f 346983 246246 217-370
hd?g 84747 1031355 53-697
hd?h 593229 522873 371-697
.Tn 7957B/7961B No partitions:
.Sy disk start length cyls
hd?a 126 16002 1-127
hd?b 16128 32760 128-387
hd?c 0 159894 0-1268
hd?d 16128 49140 128-517
hd?e 65268 50400 518-917
hd?f 115668 44226 918-1268
hd?g 48888 111006 388-1268
hd?h 65268 94626 518-1268
.Tn 7958B/7962B No partitions:
.Sy disk start length cyls
hd?a 378 16254 1-43
hd?b 16632 32886 44-130
hd?c 0 297108 0-785
hd?d 16632 49140 44-173
hd?e 65772 121716 174-495
hd?f 187488 109620 496-785
hd?g 49518 247590 131-785
hd?h 65772 231336 174-785
.Tn 7959B/7963B No partitions:
.Sy disk start length cyls
hd?a 378 16254 1-43
hd?b 16632 49140 44-173
hd?c 0 594216 0-1571
hd?d 16632 65772 44-217
hd?e 82404 303912 218-1021
hd?f 386316 207900 1022-1571
hd?g 65772 528444 174-1571
hd?h 82404 511812 218-1571
.El
.Pp
The eight partitions as given support four basic, non-overlapping layouts,
though not all partitions exist on all drive types.
.Pp
In the first layout there are three partitions and a ``bootblock'' area.
The bootblock area is at the beginning of the disk and holds
the standalone disk boot program.
The
.Pa hd?a
partition is for the root file system,
.Pa hd?b
is a paging/swapping area, and
.Pa hd?g
is for everything else.
.Pp
The second layout is the same idea,
but has a larger paging/swapping partition
.Pq Pa hd?d
and
a smaller ``everything else'' partition
.Pq Pa hd?h .
This layout is better for environments which run many large processes.
.Pp
The third layout is a variation of the second,
but breaks the
.Pa hd?h
partition into two partitions,
.Pa hd?e
and
.Pa hd?f .
.Pp
The final layout is intended for a large, single file system second disk.
It is also used when writing out the boot program since it is the only
partition mapping the bootblock area.
.Sh FILES
.Bl -tag -width /dev/rhd[0-7][a-h] -compact
.It Pa /dev/hd[0-7][a-h]
block files
.It Pa /dev/rhd[0-7][a-h]
raw files
.El
.Sh DIAGNOSTICS
.Bl -diag
.It "hd%d err: v%d u%d, R0x%x F0x%x A0x%x I0x%x, block %d"
An unrecoverable data error occurred during transfer of the
specified block on the specified disk.
.El
.Sh BUGS
The current disk partitioning is totally bogus.
.Tn CS/80
drives have 256 byte sectors which are mapped to 512 byte
``sectors'' by the driver.
Since some
.Tn CS/80
drives have an odd number of sectors per cylinder,
the disk geometry used is not always accurate.
.Pp
The partition tables for the file systems should be read off each pack,
as they are never quite what any single installation would prefer,
and this would make packs more portable.
.Pp
A program to analyze the logged error information (even in its
present reduced form) is needed.
|
