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Sun systems, Solaris 2 (SunOS 5.x)
This topic is available in English only.
contents of this section
determining the SCSI ID
configuring the device files
hp-data values
related topics
verifying installation
glossary
determining the SCSI id
Before you configure your system to support your new HP SureStore DLT1 drive,
you need to determine what SCSI ID to use. The SCSI ID must be unique for each
device attached to the SCSI bus.
1
Check for existing SCSI controllers using the following command:
% modinfo | grep "SCSI Host"
This will produce output similar to the following:
18 501a4000 c3b8 61 1 esp (ESP SCSI Host Bus Adapter Drive)
21 501c8000 9e70 6 1 fas (FAS SCSI Host Bus Adapter Drive)
This indicates that there are two SCSI controllers on the system, an ESP-
based adapter and a FAS-based adapter. For the adapter to which the new
tape drive is attached, you will need to determine what SCSI IDs are already
used.
2
Determine the SCSI IDs of the existing devices attached to the SCSI
controller:
For all adapters:
% dmesg | egrep ".*xxx.*target" | sort | uniq
where xxx = the type of adapter (esp, glm, fas or isp), as appropriate.
For example, for an ESP-based adapter:
% dmesg | egrep ".*esp.*target" | sort | uniq
This produces a list similar to:
sd0 at esp0: target 0 lun 0 sd6 at esp0: target 6 lun 0
This indicates that SCSI IDs 0 and 6 are used for existing devices. SCSI ID
7 is generally used for the adapter itself. In this situation, you would use a
SCSI ID from 1 to 5 for the new tape drive.
configuring the device files
Only if necessary, make the following file modifications to enhance performance:
1
In the file /kernel/drv/st.conf, after these lines:
########
# Copyright (c) 1992, by Sun Microsystems, Inc.
#ident "@(#)st.conf 1.6 93/05/03 SMI"
add the following:
tape-config-list =
"BNCHMARKDLT1", "HP DLT1", "DLT1",
DLT1 = 1,0x36,0,0xd639,4,0x00,0x00,0x86,0x87,3;
name="st" class="scsi"
target=X lun=0;
where X is the SCSI target address of the device you have attached.
2
If you are replacing an existing tape device on the same SCSI ID, remove
the contents of the /dev/rmt directory as follows:
% cd /dev/rmt
% rm *
3
Do a reconfigure boot:
% cd /
% touch /reconfigure
% sync;halt
4
When the system is down, reboot:
% boot -r
Make sure you include the -r switch, so that the device directory is
reconfigured using the new data.
5
You should now be able to use the drive:
Use /dev/rmt/Xcb if you require a compression rewind device file,
where X is the relevant device address.
Use /dev/rmt/Xcbn when you require a compression non-rewind
device.
Once the device files have been created, you should confirm that your new tape
drive is working properly. See Verifying Installation.
hp-data values
The values for DLT1 and name, which provide normal DLT mode, have the
following meanings:
Value Meaning
1 This value should be 1.
0x36
Value for a DLT drive in /usr/include/sys/mtio.h.
0 or
1024
Default block size. For variable block size, use 0 instead of 1024
(except with Solaris 2.3, where you should not use 0).
0xd639 A value is derived from constants provided in
/usr/include/sys/scsi/targets/stdef.h. The value
determines which operations the driver can perform with the
attached device by using a unique value for each feature and then
adding them together to form 0xd639. The features are as follows:
0x001 Device supports variable length records.
0x008
Device can backspace over files (as in the ‘mt bsf’
option).
0x010
Device supports backspace record (as in ‘mt bsr’).
0x020 Device requires a long time-out period for erase
functions.
0x0200 Device knows when end of data has been reached.
0x0400 Device driver is unloadable.
0x1000 Time-outs five times longer than normal.
0x4000 Driver buffers write requests and pre-acknowledges
success to application.
0x8000 Variable record size not limited to 64 KB.
0x00 Default density setting. Creates a device file with compression
disabled.
0x86 Density code specifying 40GB capacity (no compression).
0x87 The density code for data compression enabled by default (80GB).
target=X
X specifies the SCSI ID (target) of the device.
lun=0 Specifies the LUN for the device.
© 2000, Hewlett-Packard Company
file:///C|/Documents%20and%20Settings/topher.COL-SPRINGS/Desktop/manual/document/dlt1/user/reseller/eng/c_sun.htm [12/3/2001 7:50:55 AM]