scsimodepage(1m)scsimodepage(1m)NAMEscsimodepage - display and edit Mode Pages for SCSI and Fibre Channel
devices
SYNOPSISscsimodepage [-D] [-B Byte from Start of Page] [-P Page No.] [-F Ref.
Field No.] [-V New Field/Byte Value] [-o Output LogFile] -d Device
DESCRIPTIONscsimodepage is an interactive utility for devices accessed using the SGI
SCSI subsystem. It sends a Mode Sense(6) command to the device to get the
modepages, displays them in a tabular format, allows the user to change
various fields in those pages and then sends a Mode Select(6) command to
the device to save the changed modepages. More information about the
Mode Sense(6) and Mode Select(6) commands can be found in the SCSI
Primary Commands-2 (SPC-2) reference documents.
OPTIONS
In the interactive mode scsimodepage is invoked with the -d devicename
option. The device name must correspond to the 'sc' device. A logfile to
store modepage modifications should also be specified using the -o
logfile option. For example :
scsimodepage-d /dev/scsi/sc9d70l0 -o target70.log
If a logfile is not specified, modepage changes are stored in
scsimodepage.log in the current working directory of the user. The
logfile is intended to facilitate the user to make the same change on
multiple devices (all supporting the modepages being edited). For
example (assuming the logfile is target70.log):
sh target70.log /dev/scsi/sc9d71l0
will copy the modepage changes made on sc9d70l0 to sc9d71l0.
-P Page No.
specifies the number of the modepage to be edited. Both decimal and
hex values (preceded by 0x) are acceptable.
-F Ref. Field No.
Specifies the Reference no. of the modepage field being edited.
Cannot be used with the -B option. Both decimal and hex values
(preceded by 0x) are acceptable.
-V Value
The new value to be placed in the specified field/byte of the page.
Both decimal and hex values (preceded by 0x) are acceptable.
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scsimodepage(1m)scsimodepage(1m)-B Byte No.
Specifies the byte no. from the start of the page. Bytes are
numbered starting from 0 and include the bytes forming the page
header. This option cannot be used with the -F option. Both
decimal and hex values (preceded by 0x) are acceptable.
-D Load Default Values. This option changes the current values in the
modepage ( specified using -P ) to their default values.
In the interactive mode an invalid choice results in the default option
(specified in []) being chosen. For example :
Do you wish to modify this [n] :
Any keystroke other than 'y' or 'Y' will result in 'n' being chosen.
Modepage changes can result in loss of system data and this facility
ensures that the user is fully aware of the changes being made.
EXAMPLES
1) scsimodepage-P 0x1 -F 16 -V 0x1024 -d <device>
In this example Field 16 (in the tabular representation) of Page 1 gets
changed to 0x1024.
2) scsimodepage-P 0x1 -B 16 -V 0x24 -d <device>
In this example the 16th byte of Page 1 gets changed to 0x24.
3) scsimodepage-P 0x1 -D -d <device>
In this example the current values of ModePage 1 are changed to their
default values.
FILES
/dev/scsi/sc*d*l* - the generic 'sc' scsi driver device
SEE ALSOscsicontrol(1M), scsiha(1M), scsidiskformat(1M), scsidisktest(1M).
NOTE
This command is normally usable only by the superuser, because the
standard permissions of the devices in /dev/scsi restrict access to other
users.
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