IBM TS2340 User Guide - Page 158

which means that SCSI commands Write FM, Locate, Load-Unload, Erase, and, IBMtape.conf, ioctl

Page 158 highlights

Solaris Device Driver (IBMtape) % /opt/IBMtape/tmd -s for IBMtape.4.0.9.2 and later % /usr/sbin/rem_drv IBMtape % /usr/sbin/add_drv -m '* 0666 bin bin' IBMtape % /opt/IBMtape/tmd for IBMtape.4.0.9.2 and later Default settings in IBMtape.conf can be overridden for a particular device (and only while the device is kept open) using the ioctl application programming interface (API) of the device driver. The parameter settings made through the API revert back to the default values in IBMtape.conf the next time the device is opened. Refer to the IBM TotalStorage and System Storage Tape Device Drivers: Programming Reference for more information about changing configuration parameters under program control. IBMtape.conf contains one stanza for each SCSI target address/LUN pair owned by IBMtape. The reference IBMtape.conf file supplied with the package contains a stanza for every possible SCSI target and LUN combination supported by IBM tape systems. The following example shows the stanza for target 0, LUN 0, with IBMtape's default configuration parameter values. The parameter immediate is disabled, which means that SCSI commands Write FM, Locate, Load-Unload, Erase, and Rewind complete before returning status: name="IBMtape" class="scsi" target=0 lun=0 block_size=0 buffering=1 immediate=0 trailer=0 sili=0; The following example shows the stanza for target 0, LUN 0, with IBMtape's default configuration parameter values and the rewind immediate mode set on, which causes the SCSI rewind command to return control to the application program before the command actually completes on the tape drive: name="IBMtape" class="scsi" target=0 lun=0 block_size=0 buffering=1 rew_immediate=1 trailer=0 sili=0; If immediate is set to 1 and rew_immediate is set to 0, the setting of rew_immediate is ignored. The name variable identifies IBMtape as the device driver, and class identifies the type of device supported as SCSI. The target and the lun variables determine the target address and LUN of IBM devices that are controlled by that stanza. On systems with multiple SCSI adapters, a single target/LUN stanza controls the configuration settings for all devices addressed with that target address and LUN. Thus, two or more supported IBM devices on the system that have the same target and LUN settings but are attached to different SCSI buses are all affected by the configuration parameters of the single stanza having that target address and LUN. After installation of the IBMtape package is complete, you may eliminate unnecessary probing for devices by commenting out unused target/LUN pairs. In 140 IBM Tape Device Drivers Installation and User's Guide

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% /opt/IBMtape/tmd -s
for IBMtape.4.0.9.2 and later
% /usr/sbin/rem_drv IBMtape
% /usr/sbin/add_drv -m '* 0666 bin bin' IBMtape
% /opt/IBMtape/tmd
for IBMtape.4.0.9.2 and later
Default settings in
IBMtape.conf
can be overridden for a particular device (and only
while the device is kept open) using the
ioctl
application programming interface
(API) of the device driver. The parameter settings made through the API revert
back to the default values in
IBMtape.conf
the next time the device is opened. Refer
to the
IBM TotalStorage and System Storage Tape Device Drivers: Programming Reference
for more information about changing configuration parameters under program
control.
IBMtape.conf
contains one stanza for each SCSI target address/LUN pair owned by
IBMtape. The reference
IBMtape.conf
file supplied with the package contains a
stanza for every possible SCSI target and LUN combination supported by IBM tape
systems.
The following example shows the stanza for target 0, LUN 0, with IBMtape’s
default configuration parameter values. The parameter immediate is disabled,
which means that SCSI commands Write FM, Locate, Load-Unload, Erase, and
Rewind complete before returning status:
name="IBMtape" class="scsi"
target=0 lun=0
block_size=0
buffering=1
immediate=0
trailer=0
sili=0;
The following example shows the stanza for target 0, LUN 0, with IBMtape’s
default configuration parameter values and the rewind immediate mode set on,
which causes the SCSI rewind command to return control to the application
program before the command actually completes on the tape drive:
name="IBMtape" class="scsi"
target=0 lun=0
block_size=0
buffering=1
rew_immediate=1
trailer=0
sili=0;
If immediate is set to 1 and rew_immediate is set to 0, the setting of
rew_immediate is ignored.
The
name
variable identifies IBMtape as the device driver, and
class
identifies the
type of device supported as SCSI.
The
target
and the
lun
variables determine the target address and LUN of IBM
devices that are controlled by that stanza. On systems with multiple SCSI adapters,
a single target/LUN stanza controls the configuration settings for all devices
addressed with that target address and LUN. Thus, two or more supported IBM
devices on the system that have the same target and LUN settings but are attached
to different SCSI buses are all affected by the configuration parameters of the
single stanza having that target address and LUN.
After installation of the IBMtape package is complete, you may eliminate
unnecessary probing for devices by commenting out unused target/LUN pairs. In
Solaris Device Driver (IBMtape)
140
IBM Tape Device Drivers Installation and User’s Guide