NetBSD/share/man/man4/man4.hp300/rd.4

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.\" Copyright (c) 1990, 1991 The Regents of the University of California.
.\" All rights reserved.
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.\" This code is derived from software contributed to Berkeley by
.\" the Systems Programming Group of the University of Utah Computer
.\" Science Department.
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.\" 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
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.\" from: @(#)rd.4 5.2 (Berkeley) 3/27/91
.\" $Id: rd.4,v 1.2 1993/08/01 07:56:24 mycroft Exp $
.\"
.Dd March 27, 1991
.Dt RD 4 hp300
.Os
.Sh NAME
.Nm rd
.Nd
.Tn CS/80
disk interface
.Sh SYNOPSIS
.Cd "master hpib? at scode?"
.Cd "disk rd? at hpib? slave?"
.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 4 .
.Pp
The script
.Xr MAKEDEV 8
should be used to create the
.Nm rd
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 rd
and
.Sq Li rrd
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 4 ) .
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
rd?a 112 15904 1-142
rd?b 16016 20160 143-322
rd?c 0 108416 0-967
rd?d 16016 40320 143-502
rd?e undefined
rd?f undefined
rd?g 36176 72240 323-967
rd?h 56336 52080 503-967
.Tn 9134D No partitions:
.Sy disk start length cyls
rd?a 96 15936 1-166
rd?b 16032 13056 167-302
rd?c 0 29088 0-302
rd?d undefined
rd?e undefined
rd?f undefined
rd?g undefined
rd?h undefined
.Tn 9122S No partitions:
.Sy disk start length cyls
rd?a undefined
rd?b undefined
rd?c 0 1232 0-76
rd?d undefined
rd?e undefined
rd?f undefined
rd?g undefined
rd?h undefined
.Tn 7912P No partitions:
.Sy disk start length cyls
rd?a 0 15904 0-70
rd?b 16128 22400 72-171
rd?c 0 128128 0-571
rd?d 16128 42560 72-261
rd?e undefined
rd?f undefined
rd?g 38528 89600 172-571
rd?h 58688 69440 262-571
.Tn 7914CT/P No partitions:
.Sy disk start length cyls
rd?a 224 15904 1-71
rd?b 16128 40320 72-251
rd?c 0 258048 0-1151
rd?d 16128 64960 72-361
rd?e 81088 98560 362-801
rd?f 179648 78400 802-1151
rd?g 56448 201600 252-1151
rd?h 81088 176960 362-1151
.Tn 7958A No partitions:
.Sy disk start length cyls
rd?a 252 16128 1-64
rd?b 16380 32256 65-192
rd?c 0 255276 0-1012
rd?d 16380 48384 65-256
rd?e 64764 100800 257-656
rd?f 165564 89712 657-1012
rd?g 48636 206640 193-1012
rd?h 64764 190512 257-1012
.Tn 7957A No partitions:
.Sy disk start length cyls
rd?a 154 16016 1-104
rd?b 16170 24640 105-264
rd?c 0 159544 0-1035
rd?d 16170 42350 105-379
rd?e 58520 54824 380-735
rd?f 113344 46200 736-1035
rd?g 40810 118734 265-1035
rd?h 58520 101024 380-1035
.Tn 7933H No partitions:
.Sy disk start length cyls
rd?a 598 16146 1-27
rd?b 16744 66976 28-139
rd?c 0 789958 0-1320
rd?d 83720 16146 140-166
rd?e 99866 165646 167-443
rd?f 265512 165646 444-720
rd?g 83720 706238 140-1320
rd?h 431158 358800 721-1320
.Tn 9134L No partitions:
.Sy disk start length cyls
rd?a 80 15920 1-199
rd?b 16000 20000 200-449
rd?c 0 77840 0-972
rd?d 16000 32000 200-599
rd?e undefined
rd?f undefined
rd?g 36000 41840 450-972
rd?h 48000 29840 600-972
.Tn 7936H No partitions:
.Sy disk start length cyls
rd?a 861 16359 1-19
rd?b 17220 67158 20-97
rd?c 0 600978 0-697
rd?d 84378 16359 98-116
rd?e 100737 120540 117-256
rd?f 220416 120540 256-395
rd?g 84378 516600 98-697
rd?h 341817 259161 397-697
.Tn 7937H No partitions:
.Sy disk start length cyls
rd?a 1599 15990 1-10
rd?b 17589 67158 11-52
rd?c 0 1116102 0-697
rd?d 84747 15990 53-62
rd?e 100737 246246 63-216
rd?f 346983 246246 217-370
rd?g 84747 1031355 53-697
rd?h 593229 522873 371-697
.Tn 7957B/7961B No partitions:
.Sy disk start length cyls
rd?a 126 16002 1-127
rd?b 16128 32760 128-387
rd?c 0 159894 0-1268
rd?d 16128 49140 128-517
rd?e 65268 50400 518-917
rd?f 115668 44226 918-1268
rd?g 48888 111006 388-1268
rd?h 65268 94626 518-1268
.Tn 7958B/7962B No partitions:
.Sy disk start length cyls
rd?a 378 16254 1-43
rd?b 16632 32886 44-130
rd?c 0 297108 0-785
rd?d 16632 49140 44-173
rd?e 65772 121716 174-495
rd?f 187488 109620 496-785
rd?g 49518 247590 131-785
rd?h 65772 231336 174-785
.Tn 7959B/7963B No partitions:
.Sy disk start length cyls
rd?a 378 16254 1-43
rd?b 16632 49140 44-173
rd?c 0 594216 0-1571
rd?d 16632 65772 44-217
rd?e 82404 303912 218-1021
rd?f 386316 207900 1022-1571
rd?g 65772 528444 174-1571
rd?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 rd?a
partition is for the root file system,
.Pa rd?b
is a paging/swapping area, and
.Pa rd?g
is for everything else.
.Pp
The second layout is the same idea,
but has a larger paging/swapping partition
.Pq Pa rd?d
and
a smaller ``everything else'' partition
.Pq Pa rd?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 rd?h
partition into two partitions,
.Pa rd?e
and
.Pa rd?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/rrd[0-7][a-h] -compact
.It Pa /dev/rd[0-7][a-h]
block files
.It Pa /dev/rrd[0-7][a-h]
raw files
.El
.Sh DIAGNOSTICS
.Bl -diag
.It "rd%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 HISTORY
The
.Nm
driver
.Ud
.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 of 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.