How To Change The MPxIO/STMS Controller Number In Solaris 10 (Does not Apply to Solaris 11)
Last updated on JANUARY 01, 2018
Applies to:Sun Storage Traffic Manager Software - Version 4.6 and later
Solaris Operating System - Version 10 3/05 to 10 1/13 U11 [Release 10.0]
Information in this document applies to any platform.
***Updated 26 July 2015***
Some applications like Oracle RAC require that the MPxIO/STMS controller numbers are consistent across multiple nodes.
This c0 reservation is independent of mpxio enable/disable and independent of established /dev namespace.
The procedure below applies to all versions of Solaris 10 only.
In this scenario, after replacing a faulty HBA, the MPxIO controller number changed from the original c6 to c0. The goal is to change it back to c6.
Comparing the explorer before and after the HBA was replaced showed that the /dev/cfg links and /etc/path_to_inst are the same, and yet somehow the controller number changed. Hardware installation of the HBAs is exactly the same as the other Oracle RAC node. The /dev/cfg and /etc/path_to_inst are also exactly the same as the other node.
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