Target Port Group (TPG) IDs Change in 'mpathadm show lu <device>' Command after Sun Storage 2500/6000 Array Reboots (Doc ID 1445145.1)

Last updated on MAY 12, 2017

Applies to:

Solaris SPARC Operating System - Version 10 3/05 HW2 and later
Sun Storage 2510 Array - Version Not Applicable and later
Sun Storage 6780 Array - Version Not Applicable and later
Sun Storage 2530 Array - Version Not Applicable and later
Sun Storage 2530-M2 Array - Version Not Applicable and later
Information in this document applies to any platform.

Symptoms

It is observed that Target Port Group (TPG) ID values, reported in mpathadm  show lu <device> output under the "Target Port Groups" section, for LUN(s) from Sun Storage 2500(-M2)/6000 series arrays change after the array reboots. The TPG IDs are swapped after reboot for the respective target ports and also the order in which the TPG displayed, are swapped.

This issue occurs in all instances of Solaris 9/10 connected to Sun Storage 2500(-M2)/6000 series arrays.
However there is a difference in Solaris 11 environment:


Before reboot:

Target port 202400a0b838900b has TPG id 2
Target port 202500a0b838900b has TPG id 4

Cause

Sign In with your My Oracle Support account

Don't have a My Oracle Support account? Click to get started

My Oracle Support provides customers with access to over a
Million Knowledge Articles and hundreds of Community platforms