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Installation 27
Verifying device recognition
Verify that the HP-UX system recognizes the new devices on the disk
array.
If the SCSI paths were defined after the system is powered on, you must
halt and restart the system to allow the system to recognize the new
devices.
To verify device recognition:
1. Log in to the system as root.
2. Display the device data to verify that the system recognizes the newly
installed devices on the disk array. Use the ioscan –fn command to
display the device data.
On a system with a large LUN configuration, HP-UX may not build
device files on all LUNs. Enter insf –e to build all missing device files.
Example
In the example:
HP OPEN-9 device: SCSI bus number = 14/12, bus instance = 6, SCSI
target ID = 0, LUN = 0.
HP OPEN-9*2 device: SCSI bus number = 14/12, bus instance = 6,
SCSI target ID = 0, LUN = 1.
If UNKNOWN is displayed for a disk, the HP 9000 system may not be
configured properly. Refer to the HP documentation or contact HP
# ioscan -fn
class I H/W Path Driver S/W State H/W Type Description
==========================================================================
bc 6 14 ccio CLAIMED BUS_NEXUS I/O Adapter HP Fibre Channel Mass
fc 1 14/12 fcT1 CLAIMED INTERFACE Storage Adapter HP Fibre Channel Mass
lan 2 14/12.5 fcT1_cntl CLAIMED INTERFACE Storage Cntl /dev/fcms2
fcp 1 14/12.8 fcp CLAIMED INTERFACE FCP Protocol Adapter HP A3308 FCP-SCSI MUX
ext_bus 6 14/12.8.0.0.0 fcpmux CLAIMED INTERFACE Interface
target 9 14/12.8.0.0.0.0 tgt CLAIMED DEVICE
disk 4 14/12.8.0.0.0.0.0 sdisk CLAIMED DEVICE HP OPEN-9 /dev/dsk/c6t0d0/dev/rdsk/c6t0d0
disk 5 14/12.8.0.0.0.0.1 sdisk CLAIMED DEVICE HP OPEN-9*2 /dev/dsk/c6t0d1 /dev/rdsk/c6t0d1
ext_bus 7 14/12.8.0.255.0 fcpdev CLAIMED INTERFACE FCP Device Interface
target 10 14/12.8.0.255.0.0 tgt CLAIMED DEVICE
ctl 5 14/12.8.0.255.0.0.0 sctl CLAIMED DEVICE HP HPA3308 /dev/rscsi/c7t0d0