Asset ID:	1-75-1009557.1
Update Date:	2011-05-24
Keywords:

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Solution Type  Troubleshooting Sure

Solution  1009557.1 :   Troubleshooting Fibre Channel Devices from the OS  


PreviouslyPublishedAs
213181

Applies to:

Sun Storage 6920 System
Sun Storage 3510 FC Array
Sun Storage 3511 SATA Array
Sun Storage T3 Array
All Platforms

Purpose

Description

This document assumes there is a problem with a fibre channel device path from Solaris and will address the required troubleshooting steps. The information contained in this document does not address SCSI devices.

In order to provide you the most accurate fix, please validate that each statement under the symptoms below is true for your environment. These symptoms will hyperlink you into a relevant content that will:

1) tell you how to validate the listed symptom
2) tell you how to fix the symptom if it is true for your environment.

The listed symptoms are ordered in the most appropriate sequence to isolate the issue and be certain about the related fix. Please do not skip a step.

Symptoms:

- Device disappeared

- Device offline

-Can not see device in format

-Can not see device with luxadm commands

-Link errors

Last Review Date

May 24, 2011

Instructions for the Reader

Troubleshooting Details

Steps to Follow

Please validate that each troubleshooting step below is true for your environment. Each step will provide instructions via a link to a document, for validating the step and taking corrective action as necessary. The steps are ordered in the most appropriate sequence to isolate the issue and identify the proper resolution. Please do not skip a step.

Step 1 - Identify the device or device path from format(1M) or /var/adm/messages. 

Validate that the HBA in the path can be seen from the Operating System, and the devices connected to the HBA are visible. 

For details on how to verify this refer to:

How to verify connectivity on Oracle/Sun Branded Host Bus Adaptors (HBAs) (Doc ID 1009556.1)

Example of device path:

     /devices/pci@1f,4000/SUNW,qlc@4/fp@0,0

Step 2 - Validate that the multipathing software is optimal.

Sun[TM] supports two types of multipathing: Sun Storage Traffic Manager(STMS) and Veritas Dynamic Multi-Pathing(DMP). 

 Refer to:

DocID: 1002465.1 "Verifying STMS (mpxio) health" for STMS
DocID: 1011302.1 "Verifying DMP Health" for VxDMP

Step 3 - Verify Sun Storage Array hardware and configuration is optimal.

Refer to the troubleshooting documents below to confirm the hardware and configuration settings are correct:

For T3 : DocID: 1012673.1 "Troubleshooting Sun StorEdge[TM] T3 Configuration"

For 351x : DocID: 1005313.1 "Troubleshooting Sun StorEdge[TM] 33x0/351x Configurations"

For 6920 : DocID: 1009915.1 "Troubleshooting Sun StorEdge[TM] 6920 Configuration Problems"

Step 4 - At this point, if you have validated that each troubleshooting step above is true for your environment, and the issue still exists, further troubleshooting is required.

Please gather a Solaris[TM] Explorer, and contact Oracle Support. 

Refer to the Sun Explorer Product Information Center (Doc ID 1312847.1)

Internal Comments
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NOTE: Storage: Fibre Channel (FC) Devices reporting sd or ssd " SCSI parity error messages may not be faulty themselves.

T3, T3+, luxadm, can't see device, mpxio, vxdmp, path offline, 6920, mapping, lun, Audited, normalized
Previously Published As
86520



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