HP XP20000/XP24000 HP StorageWorks XP Disk Array Configuration Guide (T5278-96 - Page 22

SCSI target ID, repeat the procedures

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repeat the procedures in "Verifying device recognition" (page 19) to verify new device recognition and the device files and driver. Example # insf -e insf: Installing special files for mux2 instance 0 address 8/0/0 : : : : : : : : # Failure of the insf -e command indicates a SAN problem. If the device files for the new disk array devices cannot be created automatically, you must create the device files manually using the mknodcommand as follows: 1. Retrieve the device information you recorded earlier. 2. Construct the device file name for each device, using the device information, and enter the file names in your table. Use the following formula to construct the device file name: cxtydz where: • x = SCSI bus instance number • y = SCSI target ID • z = LUN • c stands for controller • t stands for target ID • d stands for device The numbers x, y, and z are hexadecimal. 3. Construct the minor number for each device, using the device information, and enter the file names in your table. Use the following formula to construct the minor number: 0xxxyz00 where xx = SCSI bus instance number, y = SCSI target ID, and z = LUN. 4. Display the driver information for the system using the lsdev command. Example # lsdev Character : 188 # Block : 31 Driver : sdisk Class : disk 5. Enter the major numbers for the device drivers into the table. You should now have all required device and driver information in the table. 22 HP-UX

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repeat the procedures in
“Verifying device recognition” (page 19)
to verify new device recognition
and the device files and driver.
Example
# insf -e
insf: Installing special files for mux2 instance 0 address 8/0/0
:
:
:
:
:
:
:
:
#
Failure of the
insf
–
e
command indicates a SAN problem.
If the device files for the new disk array devices cannot be created automatically, you must create
the device files manually using the
mknodcommand
as follows:
1.
Retrieve the device information you recorded earlier.
2.
Construct the device file name for each device, using the device information, and enter the
file names in your table. Use the following formula to construct the device file name:
c
x
t
y
d
z
where:
•
x
= SCSI bus instance number
•
y
= SCSI target ID
•
z
= LUN
•
c
stands for controller
•
t
stands for target ID
•
d
stands for device
The numbers
x
,
y
, and
z
are hexadecimal.
3.
Construct the minor number for each device, using the device information, and enter the file
names in your table. Use the following formula to construct the minor number:
0x
xxyz
00
where
xx
= SCSI bus instance number,
y
= SCSI target ID, and
z
= LUN.
4.
Display the driver information for the system using the
lsdev
command.
Example
# lsdev
Character
Block
Driver
Class
:
:
:
:
188
31
sdisk
disk
#
5.
Enter the major numbers for the device drivers into the table. You should now have all required
device and driver information in the table.
22
HP-UX