About: IOSCAN's QUESTION

[Season Chu]

System is HP-UX 11.31  (rx3660).       I  have one question about the "ioscan"  ,

bash-3.2# ioscan -m lun

,
Class     I  Lun H/W Path  Driver  S/W State   H/W Type     Health   Description
=======================================================================
disk      3  64000/0xfa00/0x0    esdisk  CLAIMED     DEVICE       online   HP      IR Volume         
             0/4/1/0.0xc90c3141ba86224.0x0
                      /dev/disk/disk3      /dev/disk/disk3_p2   /dev/rdisk/disk3     /dev/rdisk/disk3_p2
                      /dev/disk/disk3_p1   /dev/disk/disk3_p3   /dev/rdisk/disk3_p1  /dev/rdisk/disk3_p3
disk    169  64000/0xfa00/0x68   esdisk  CLAIMED     DEVICE       online   DGC     CX4-240           
             0/7/1/0.0x50060160446020c2.0x0
             0/7/1/0.0x50060168446020c2.0x0
             0/7/1/0.0x50060168446020c2.0x4000000000000000
             0/7/1/0.0x50060160446020c2.0x4000000000000000
                      /dev/disk/disk169   /dev/rdisk/disk169
disk    170  64000/0xfa00/0x69   esdisk  CLAIMED     DEVICE       limited  DGC     CX4-240WDR5       
             0/7/1/0.0x50060160446020c2.0x1000000000000
             0/7/1/0.0x50060168446020c2.0x1000000000000
             0/7/1/0.0x50060168446020c2.0x4001000000000000
             0/7/1/0.0x50060160446020c2.0x4001000000000000
                      /dev/disk/disk170   /dev/rdisk/disk170
disk    171  64000/0xfa00/0x6a   esdisk  CLAIMED     DEVICE       limited  DGC     CX4-240WDR5       
             0/7/1/0.0x50060160446020c2.0x2000000000000
             0/7/1/0.0x50060168446020c2.0x2000000000000
             0/7/1/0.0x50060168446020c2.0x4002000000000000
             0/7/1/0.0x50060160446020c2.0x4002000000000000
                      /dev/disk/disk171   /dev/rdisk/disk171

what are they  with red ?  thx ！

[Torsten. · Accepted solution]

From "HP-UX 11i v3 Mass Storage Device Naming" white paper:

Lunpath hardware path format
The format of the lunpath hardware path is as follows:
•  <HBA hw path>.<target port WWN or port id>.<SCSI-3 LUNid>
Where:
•  HBA hw path: legacy HBA hardware path (example: 0/3/1/0).
•  target port WWN or port id: hexadecimal representation of the target port Worldwide name
(WWN), or the target port identifier if the SCSI transport does not support WWN (example:
0x21000020370fe8c8 for WWN, and 0x0 for port id).
•  SCSI-3 LUNid: hexadecimal representation of the SCSI-3 64 bit LUN identifier

From "Native Multi-Pathing for Mass Storage" white paper:

Make sure the correct "host mode" is set for HP-UX!

[Season Chu]

thx for Torsten.