Goal

Solution

Decode the Port World Wide Nodename

Steps to Follow
1. The PWWN reported back to the host has the following format:

50060E80TTSSSSCP

Table 1: HDS PWWN Field breakdown

Table 2: CP Value for 9900 Series

Example: 500060e802791812

Type=02 = 9900 series

Serial number = 0x7918 = 31000

CP= 12 = CL-2 port C

Physical location:

CL-2 CHA card is located in card slot V (CHA-V)

Table 3: 4-Port CHA card port locations (SE9900 & SE9900V)

Table 4: CP Value for 9900V Series (9980 and 9970)

Example: 50060e8003f52d04

Type=03 = 9900V

Serial Number = 0xf52d = 62765

CP=04 = CL-1 port E.

For 4-Port CHA cards, the port assignments are the same as the 9900 Series in Table 3.

Table 5: 8-Port CHA card port locations

Table 6: CP Value for 9990 Series (9990 and 9985)

Example : 50060e8004275531

Type 04 = 9990

Serial number 0x2755 = 10069

CP = 31 = Cluster-2 logical port 4B

Looking at Table 7, the physical port location is in CL-2 basic CHA (CHA-2Q) port 6

Table 7: 9990 CHA port locations

2. How to determine the CU:LDEV information, from the output of  format -e  command or  iostat -E  command.

     2.1 Let's say you have more than one subsystem attached to your host or you just need to find CU and/or LDEV information of a disk, from the O/S point of view:

# format -e

select disk

format> scsi

scsi> inquiry

You will see an output such as..

Inquiry:

 00 00 02 02 77 00 00 02 48 49 54 41 43 48 49 20 ....w...HITACHI

 4f 50 45 4e 2d 39 20 20 20 20 20 20 2d 53 55 4e OPEN-9 -SUN

 32 31 30 39 30 34 35 30 39 44 35 44 30 30 41 45 210904509D5D00AE

 00 00 00 00 01 02 01 01 00 00 00 00 00 00 00 00 ................

 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................

 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................

 02 05 05 00 04 00 ff 00 21 01 00 e0 8b 27 a2 b5 ........!....'..

 20 01 00 e0 8b 27 a2 b5 00 00 00 ....'.....

The number we want is 210904509D5D00AE .

2109 The first 4 digits represent the Microcode version of the sub-system.

0450 Next 4 digits are not explained at this time.

9D5D This is the subsystem serial/mfg number in hex .

00 This is the CU number in the subsystem.

AE This is the LDEV ID within the above CU group.

     2.2 Alternate method is to run/view the output from the  iostat -E  command, helpful when reviewing Explorer files:

sd60     Soft Errors: 0 Hard Errors: 0 Transport Errors: 0

Vendor: HITACHI Product: OPEN-L 
-SUN Revision
: 
2109
 
Serial No:
 
04509D5D00AE

Size: 36.45GB <36449648640 bytes>

Media Error: 0 Device Not Ready: 0 No Device: 0 Recoverable: 0

Illegal Request: 0 Predictive Failure Analysis: 0

The - SUN Revision: 2109 is the Microcode version .

The Serial No: 04509D5D00AE is decoded similar to item 2.1 above.

3. How to determine the CU:LDEV information from an MPxIO controlled device, using the output of  format  command.

# format

 14. c7t50060E800000000000009D5D0000

00AE

d0 

 /scsi_vhci/ssd@g50060e800000000000009d5d000000ae

 15. c7t50060E800000000000009D5D0000

00AF

d0 

 /scsi_vhci/ssd@g50060e800000000000009d5d000000af

The Four characters immediately preceding the "d" map out the CU and LDEV ID of the LUN.  

In this case disk #14 is CU: 00 LDEV: AE , and disk #15 is CU:00 LDEV: AF .

4. Using the output of    luxadm display   to:

Map  CU:LDEVs  to a SCSI LUN number

Map a MPxIO  controller number back to the  physical controller  numbers.

The output below is derived from the explorer:

$ more luxadm_display_500060e8027d3d04.out

DEVICE PROPERTIES for disk: 500060e8027d3d04  <--The HDS port WWN being displayed

  Vendor:               HITACHI

  Product ID:           OPEN-E      -SUN

  Revision:             0119

  Serial Num:           04007D3D000A

  Unformatted capacity: 13893.047 MBytes

  Write Cache:          Enabled

  Read Cache:           Enabled

    Minimum prefetch:   0x0

    Maximum prefetch:   0x0

  Device Type:          Disk device

  Path(s):

  /dev/rdsk/ c2 t500060E80000000000007D3D0000 000A d0s2

  /devices/scsi_vhci/ssd@g500060e80000000000007d3d0000000a:c,raw

    Controller            /devices/ssm@0,0/pci@1a,600000/SUNW,qlc@1/fp@0,0

    Device Address              500060e8 027d3d04,80

    Note: Using the decoding instructions above:

                    02 = 9960               d3d4 = Serial Number in Hex =  54228

                    04 = Cluster 1 port E

                   80 = LUN number in Hex =  LUN 128

    Host controller port WWN    210000e08b927965

    Class                       primary

    State                       ONLINE

    Controller            /devices/ssm@0,0/pci@1b,600000/SUNW,qlc@1/fp@0,0

    Device Address              500060e8027d3d 14 ,80

      Note: Same LUN (80) mapped to Cluster 2 port E (Refer to Table 3)

    Host controller port WWN    210000e08b92e265

    Class                       primary

    State                       ONLINE

Note: Conclusions from the above output:

c2t500060E80000000000007D3D0000000Ad0s2 maps to these physical controllers:

/devices/ssm@0,0/pci@1a,600000/SUNW,qlc@1/fp@0,0

/devices/ssm@0,0/pci@1b,600000/SUNW,qlc@1/fp@0,0

From the explorer output, we can also map these paths to their physical controller number:

    $ from ls-l_dev_cfg.out

    c7 -> ../../devices/ssm@0,0/pci@1a,600000/SUNW,qlc@1/fp@0,0:fc

    c8 -> ../../devices/ssm@0,0/pci@1b,600000/SUNW,qlc@1/fp@0,0:fc

CU:LDEV 00:0A = LUN 128

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