HP XP128, XP10000 manual Verifying device recognition, To verify device recognition

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 –fncommand 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 –eto build all missing device files.

Example

#ioscan -fn

class I H/W PathDriver 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

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

32 HP StorageWorks Disk Array XP Operating System Configuration Guide: HP-UX