ddr_config - Compile and display the SCSI CAM I/O device
database
/sbin/ddr_config [-option] [argument...]
Compiles the /etc/ddr.db binary database file from the
input filename. If no input file is specified, the
/etc/ddr.dbase file is used as the default. The input
filename must use the syntax rules specified in
ddr.dbase(4). Displays the contents of the /etc/ddr.db
database for the specified SCSI device. The display is to
standard output.
The type is the device type, one of the following
strings or integer values:
String: Integer: -------
-------- disk 0 tape 1
printer 2 processor 3 worm
4 rodirect, cdrom 5 scanner 6 optical
7 changer 8 comm 9
The vendor_id is the string that defines the vendor's
id for the device. Be sure to exactly quote
the vendor's id in the string, including the correct
number of space characters, if needed.
The product_id and revision are optional strings
for the vendor's name for the product and its revision
(or version) number. If used, be sure to
exactly quote them, including the correct number of
space characters. Displays the database contents
for a global_section. Enter one of the following
global section names (only the first three characters
are checked by the compiler):
partitions
densities
Displays the ddr_config help information. Processes
the /sys/data/cam_data.c file, and writes to
standard output. The output is a summary of additions
and modifications that you should make to the
/etc/ddr.dbase file in order to synchronize it with
the /sys/data/cam_data.c file.
The MACHINE parameter must be specified, and it
must be the name of your machine's system configuration
file, the file you used to build your current
system. The MACHINE system configuration file
supplies the machine-specific information that the
-x option uses to produce the output summary. Use
this option as an aid to propagating customized
SCSI device information into the dynamic device
recognition database.
Dynamic Device Recognition (DDR) is a framework for
describing the operating parameters and characteristics of
SCSI devices to the SCSI CAM I/O subsystem. You use a
utility, /sbin/ddr_config, and a text database,
/etc/ddr.dbase, to make changes to the subsystem after
installation and without rebooting.
This dynamic device recognition capability replaces the
static methods of device recognition that have been
employed by using the compiled-in device table,
/sys/data/cam_data.c.
Note
SCSI devices in the /sys/data/cam_data.c file are supported
for this release of the operating system, but support
will be withdrawn in a future release.
Use the /sbin/ddr_config utility to compile new versions
of the device definition binary database. If you use the
utility to compile customized databases, be sure to follow
the syntax rules specified in ddr.dbase(4).
The /etc/ddr.dbase text database file is initially populated
on the software distribution, and is used when the
system is booted at installation. After the initial
installation, you determine when this text database needs
to be changed. Then, you edit the /etc/ddr.dbase file to
make the changes and then use the /sbin/ddr_config utility
to compile the changes.
The /sbin/ddr_config utility places the output in the
/etc/ddr.db binary database file and notifies the kernel
that the device database has been modified. The kernel
then synchronizes its in-memory device tables with the
definitions in the /etc/ddr.db binary database file.
The compiler returns syntax errors to the standard output
device. An output file is not produced if there are syntax
errors.
The following two examples show how the command can be
used to display the partition table defaults and the tape
density table from the global section of the /etc/dbase
file. # ddr_config -g par
Recommended Partition Table Defaults:
Partition_A_Size : 64 MBytes
Partition_B_Size : 128 MBytes
Partition_G_Size : 400 MBytes
Min_Partition_Size : 50 MBytes
# ddr_config -g den
SCSI Density Code Translation Table:
Density Code Density BPI Blocking Name
0x00 0 0 default
0x01 800 0 800r_bpi
0x02 1600 0 1600r_bpi
0x03 6250 0 6250r_bpi
0x04 8000 0 8000c_bpi
0x05 8000 0 8000r_bpi
0x06 3200 0 3200r_bpi
0x07 6400 0 6400c_bpi
0x08 8000 0 8000cs_bpi
0x09 38000 0 38000c_bpi
0x0a 6666 0 6666c_bpi
0x0b 1600 0 1600c_bpi
0x0c 12690 0 12690c_bpi
0x0d 10000 512 qic120_ecc
0x0e 10000 512 qic150_ecc
0x0f 10000 512 qic120
0x10 10000 512 qic150
0x11 16000 0 qic320
0x12 0 0 qic1350
0x13 61000 0 61000_bpi
0x14 54000 0 54000_bpi
0x15 45434 0 45434_bpi
0x16 10000 0 10000_bpi
0x17 42500 0 42500_bpi
0x18 42500 0 density_code_18
0x19 62500 0 62500_bpi
0x1a 81630 0 81630_bpi
0x1b 0 0 density_code_1b
0x1c 0 0 density_code_1c
0x1d 0 0 density_code_1d
0x1e 36000 0 36000_bpi
0x1f 0 0 density_code_1f
0x20 0 0 density_code_20
0x21 0 0 density_code_21
0x22 40640 0 40640_bpi
0x23 0 0 density_code_23
0x24 61000 0 density_code_24
0x25 0 0 density_code_25
0x26 0 0 density_code_26
0x27 0 0 density_code_27
0x28 0 0 density_code_28
0x29 0 0 density_code_29
0x2a 0 0 (None)
0x2b 0 0 (None)
0x2c 0 0 (None)
0x2d 0 0 (None)
0x2e 0 0 (None)
0x2f 0 0 (None)
Binary database of SCSI device definitions Text database
of SCSI device definitions
Files: ddr.dbase(4)
ddr_config(8)
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