After the VIS Takes Over the Disk Array, the Disk Label of the Disk Array Fails to be Discovered in HP-UX

Publication Date:  2012-07-18 Views:  254 Downloads:  0
Issue Description
Initialize the disk array LUN on the VIS. Create a volume and map the volume to the host. Run the ioscan -fnC disk command on the host and the following information is displayed:
#ioscan -fnC disk
Class        I  H/W Path        Driver         S/W State   H/W Type     Description
====================================================================================
disk         3  0/0/2/1.0.16.0.0       sdisk          CLAIMED     DEVICE       TEAC    DV-28E-V
                               /dev/dsk/c0t0d0      /dev/rdsk/c0t0d0  
                               /dev/dsk/disk_query
disk        15  0/3/1/0.1.0.179.0.0.1  sdisk          CLAIMED     DEVICE       HUAWEI  VIS6000
                               /dev/dsk/c16t0d1   /dev/rdsk/c16t0d1
disk        23  0/3/1/0.1.0.179.0.0.2  sdisk          CLAIMED     DEVICE       HUAWEI  VIS6000
                               /dev/dsk/c16t0d2   /dev/rdsk/c16t0d2
disk        24  0/3/1/0.1.0.179.0.0.3  sdisk          CLAIMED     DEVICE       HUAWEI  VIS6000
                               /dev/dsk/c16t0d3   /dev/rdsk/c16t0d3
disk        26  0/3/1/0.1.0.179.0.0.4  sdisk          CLAIMED     DEVICE       HUAWEI  VIS6000
                               /dev/dsk/c16t0d4   /dev/rdsk/c16t0d4
disk        31  0/3/1/0.1.0.179.0.0.5  sdisk          CLAIMED     DEVICE       HUAWEI  VIS6000
The last line specifies the LUN mapped to the host by the added VIS. However, the disk label CxTxDx is not generated and you cannot manage the hard disk.
Alarm Information
None
Handling Process
Run the insf -C disk -e command in HP-UX and the following information is displayed:
# insf -C disk -e
insf: Installing special files for sdisk instance 3 address 0/0/2/1.0.16.0.0
insf: Installing special files for sdisk instance 15 address 0/3/1/0.1.0.179.0.0.1
insf: Installing special files for sdisk instance 23 address 0/3/1/0.1.0.179.0.0.2
insf: Installing special files for sdisk instance 24 address 0/3/1/0.1.0.179.0.0.3
insf: Installing special files for sdisk instance 26 address 0/3/1/0.1.0.179.0.0.4
insf: Installing special files for sdisk instance 31 address 0/3/1/0.1.0.179.0.0.5
Run the ioscan -funC disk command and the following information is displayed:
#ioscan -funC disk
Class        I  H/W Path        Driver         S/W State   H/W Type     Description
====================================================================================
disk         3  0/0/2/1.0.16.0.0       sdisk          CLAIMED     DEVICE       TEAC    DV-28E-V
                               /dev/dsk/c0t0d0      /dev/dsk/disk_query  /dev/rdsk/c0t0d0  
disk        15  0/3/1/0.1.0.179.0.0.1  sdisk          CLAIMED     DEVICE       HUAWEI  VIS6000
                               /dev/dsk/c16t0d1   /dev/rdsk/c16t0d1
disk        23  0/3/1/0.1.0.179.0.0.2  sdisk          CLAIMED     DEVICE       HUAWEI  VIS6000
                               /dev/dsk/c16t0d2   /dev/rdsk/c16t0d2
disk        24  0/3/1/0.1.0.179.0.0.3  sdisk          CLAIMED     DEVICE       HUAWEI  VIS6000
                               /dev/dsk/c16t0d3   /dev/rdsk/c16t0d3
disk        26  0/3/1/0.1.0.179.0.0.4  sdisk          CLAIMED     DEVICE       HUAWEI  VIS6000
                               /dev/dsk/c16t0d4   /dev/rdsk/c16t0d4
disk        31  0/3/1/0.1.0.179.0.0.5  sdisk          CLAIMED     DEVICE       HUAWEI  VIS6000
                               /dev/dsk/c16t0d5   /dev/rdsk/c16t0d5
The last line specifies the generated disk label c16t0d5 and you can operate the hard disk.
Root Cause
HP-UN detects the LUN, but no disk label is generated.
Suggestions
After the VIS maps the LUN to the HP-UX host, if the LUN is discovered on the HP-UX host by running the ioscan command, run the insf command to generate the disk label.

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