Example of scsi_vhci (MPxIO) multipath aggregation

Normal fiberchannel devices are named
cXtWWPNdLUN

Example:

/dev/dsk/c5t21000080E511F169d0

WWPN in this case is 21:00:00:80:E5:11:F1:69. It appears as "target" in the standard Solaris SCSI notation.

The problem: If you got multiple paths (to multiple WWPNs) to your devices, your volumes will appears as many identical volumes - one for each path:

       1. c5t21000080E511F169d2 <LSI-ProFibre 4000R-5902-262.26GB>
          /pci@7b,0/pci10de,5d@e/pci1077,142@0/fp@0,0/disk@w21000080e511f169,2
       2. c5t21000080E511F169d3 <LSI-ProFibre 4000R-5902-262.26GB>
          /pci@7b,0/pci10de,5d@e/pci1077,142@0/fp@0,0/disk@w21000080e511f169,3
       3. c5t22000080E511F169d2 <LSI-ProFibre 4000R-5902-262.26GB>
          /pci@7b,0/pci10de,5d@e/pci1077,142@0/fp@0,0/disk@w22000080e511f169,2
       4. c5t22000080E511F169d3 <LSI-ProFibre 4000R-5902-262.26GB>
          /pci@7b,0/pci10de,5d@e/pci1077,142@0/fp@0,0/disk@w22000080e511f169,3
       5. c5t23000080E511F169d2 <LSI-ProFibre 4000R-5902-262.26GB>
          /pci@7b,0/pci10de,5d@e/pci1077,142@0/fp@0,0/disk@w23000080e511f169,2
       6. c5t23000080E511F169d3 <LSI-ProFibre 4000R-5902-262.26GB>
          /pci@7b,0/pci10de,5d@e/pci1077,142@0/fp@0,0/disk@w23000080e511f169,3
       7. c5t24000080E511F169d2 <LSI-ProFibre 4000R-5902-262.26GB>
          /pci@7b,0/pci10de,5d@e/pci1077,142@0/fp@0,0/disk@w24000080e511f169,2
       8. c5t24000080E511F169d3 <LSI-ProFibre 4000R-5902-262.26GB>
          /pci@7b,0/pci10de,5d@e/pci1077,142@0/fp@0,0/disk@w24000080e511f169,3

How to correct this?

Tell scsi_vhci to accept this "LSI ProFibre"-Device as multipath device:

device-type-scsi-options-list =
"LSI     ProFibre 4000R", "symmetric-option";
symmetric-option = 0x1000000;

Set a suitable region size to use logical-block round-robin:

device-type-mpxio-options-list =
"device-type=LSI     ProFibre 4000R", "load-balance-options=logical-block-options";
logical-block-options="load-balance=logical-block", "region-size=20";


Result:

       1. c6t0080E52126CDF002d0 <LSI-ProFibre 4000R-5902-262.26GB>
          /scsi_vhci/disk@g0080e52126cdf002
       2. c6t0080E52126CDF003d0 <LSI-ProFibre 4000R-5902-262.26GB>
          /scsi_vhci/disk@g0080e52126cdf003


Wonderful.