Asset ID:	1-71-1434184.1
Update Date:	2012-03-12
Keywords:

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Solution Type  Technical Instruction Sure

Solution  1434184.1 :   Sun Storage 7000 Unified Storage System: How to Troubleshoot Fibre-Channel Problems  

In this Document
  Goal
  Solution
  References

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Applies to:

Sun Storage 7310 Unified Storage System - Version: Not Applicable to Not Applicable - Release: N/A to N/A
Sun ZFS Storage 7420 - Version: Not Applicable to Not Applicable   [Release: N/A to N/A]
Sun Storage 7110 Unified Storage System - Version: Not Applicable to Not Applicable   [Release: N/A to N/A]
Sun Storage 7210 Unified Storage System - Version: Not Applicable to Not Applicable   [Release: N/A to N/A]
Sun Storage 7410 Unified Storage System - Version: Not Applicable to Not Applicable   [Release: N/A to N/A]
7000 Appliance OS (Fishworks)

Goal

How to Troubleshoot Fibre-Channel Problems on a Unified Storage

Solution

The purpose of this document is to assist in identifying, troubleshooting
and resolving Fibre-Channel lun issues related to the Zfs Storage Appliance.


1. Symptoms

a. The target / lun is not visible on the host ( cannot see device in format after initial configuration)
b. The target/lun has disappeared.
c. The target/lun is offline.
d. The target/lun is present but not responding to the host commands (eg.Busy)
e. The target/lun is present but resulting in transport or timeouts (link errors or queue overruns)
f. The target/lun is experiencing a failover to another path too quickly or to a path which has already experienced a failure.
g. Boot issues
h. Performance issues.


2. Troubleshooting steps.

Step 1 - Identify the device or device path
Validate that the HBA in the path can be seen from the Operating System, and the devices connected to the HBA are visible.
Refer to <Document 1432935.1> Sun Storage 7000 Unified Storage System: How to verify host connectivity to Unified Storage


Step 2 - Validate that the multi-pathing software is optimal.
Refer to <Document 1433014.1> Sun Storage 7000 Unified Storage System: How to verify that the multipathing software ( MPxIO / VxDMP) is optimal


Step 3 - Verify the Unified Storage configuration for FC connectivity is correct if it has not already been checked in step 1 above.
Refer to <Document 1434004.1> Sun Storage 7000 Unified Storage System: Verifying that the Unified Storage has been configured correctly for Fibre-Channel connectivity


Step 4 - Verify the Fabric health of the FC connectivity to the Unified Storage if it has not already been checked in step 1 above.
Refer to <Document 1434045.1> Sun Storage 7000 Unified Storage System: Verifying the Fabric health for Fibre-Channel connectivity


Step 5 - Troubleshooting boot issues
To troubleshoot FC boot issues, please refer to Implementing Fibre Channel SAN Boot with Oracle's Sun ZFS Storage Appliance

Step 6 - Troubleshooting performance issues related to FC luns
Refer to <Document 1434007.1> Sun Storage 7000 Unified Storage System: Troubleshooting performance problems with Fibre-Channel Luns

Step 7 - At this point, if the configuration checks and the above troubleshooting steps have been carried out and the issue still exists,
please gather the following
- a Solaris[TM] Explorer (Refer to <Document 1312847.1> Sun Explorer Product Information Center).
- a support bundle after collecting analytics information ( in case of performance issues). Refer to <Document 1019887.1> Sun Storage 7000 Unified Storage System: How to collect supportfile bundle using BUI or CLI.

and contact Oracle Support to raise a Service Request.

References

<NOTE:1432935.1> - Sun Storage 7000 Unified Storage System: How to verify host connectivity to Unified Storage
<NOTE:1433014.1> - Sun Storage 7000 Unified Storage System: How to verify that the multipathing software ( MPxIO / VxDMP) is optimal
<NOTE:1434004.1> - Sun Storage 7000 Unified Storage System: Verifying that the Unified Storage has been configured correctly for Fibre-Channel connectivity
<NOTE:1434045.1> - Sun Storage 7000 Unified Storage System: Verifying the Fabric health to troubleshoot Fibre-Channel connectivity
FC SAN Boot with ZFSSA: http://www.oracle.com/technetwork/articles/servers-storage-admin/fbsanboot-365291.html
<NOTE:1434007.1> - Sun Storage 7000 Unified Storage System: Troubleshooting performance problems with Fibre-Channel Luns
<NOTE:1312847.1> - Oracle Explorer Data Collector - Product Information Center
<NOTE:1019887.1> - Sun Storage 7000 Unified Storage System: How to collect supportfile bundle using the BUI or CLI

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