Sun Storage J4500 Array
 
Sun Storage J4400 Array
 
Sun Storage J4200 Array
 

PLA-Support>Sun Systems>DISK>HDD-JBOD>SN-DK: J4xxx JBOD
 

In this Document

Purpose

Symptoms:

Troubleshooting Steps

References

Applies to:

Purpose

The purpose of this document is to help troubleshoot disk failure symptoms on Sun StorEdge J4000 JBOD arrays.

Symptoms:

An amber LED is lit on one or more drives in the array
Host(s) connected to the array report(s) SCSI driver errors for one or more drives
One or more drives from J4000 is/are not seen by host(s)
SAS RAID HBA reports Failed/Degraded status for Volume(s) configured using J4000 drives

Troubleshooting Steps

1. Verify Host logs to identify the fault(s), and the details of each fault

Reference <Document 1005530.1> How to Check for Solaris[TM] x64 Disk Errors and Online/Offline Status

2. Verify whether the drive(s) is/are configured under RAID HBA

Reference <Document 1017961.1> How to Identify if a Solaris[TM] Operating Environment is Installed on a Hardware RAID Controller

• If the drive(s) is/are configured under SAS RAID HBA, refer <Document 1013107.1> How to Identify BIOS and Solaris[TM] Hardware RAID Status. If one or more J4000 drives identified as faulty, proceed to Step 7.
  
  
  For more information about SAS RAID HBAs, refer the documentation located here

• If the drive(s) is/are NOT configured under SAS RAID HBA, proceed to Step 3.

3. Verify '/var/adm/messages*' file(s) for any SCSI errors

Verify /var/adm/messages* file(s) for any scsi errors similar to the following:

(or)

• If such errors are found, proceed to Step 4.
• If no such errors are found, proceed to Step 7.

4. Verify whether Common Array Manager(CAM) application is installed in the host

SCSI errors reported in host(s) installed with Common Array Manager(CAM), and connected to J4000 JBOD array(s) using Pandora HBA, due to Bug 6946711 - mpt Disconnected timeouts - Pandora HBA connected to two J4500 continually reset.
<SunBug 6946711> - mpt Disconnected timeouts - Pandora HBA connected to two J4500 continually reset.

You are required to verify whether CAM application is installed in the host. Use pkginfo command as indicated below:

• If CAM is installed, proceed to Step 5.
• If CAM is NOT installed, proceed to Step 6.

5. Implement the workaround for Bug 6946711

The workaround for the Bug 6946711 is to disable fmservice as follows:

• Verify the status of 'fmservice':
  
  # svcs fmservice
STATE STIME FMRI
online Aug_24 svc:/system/fmservice:default

• If fmservice is reported online, disable fmservice and reboot the host for the drive(s) to come online. Then proceed to Step 12.
  
  # svcadm disable fmservice
# svcs fmservice
STATE STIME FMRI
disabled 20:16:06 svc:/system/fmservice:default

• If fmservice is reported disabled, or no fmservice is found (in case of no CAM installation), this bug is not applicable and hence proceed to Step 6.

6. Check the SCSI errors for any media errors:

• If there are Media errors as indicated below and there are less than 30 for a two week period for the same drive, the errors were relocated successfully and no further action is required.
  
  Mar 12 10:01:10 host02 scsi: [ID 107833 kern.warning] WARNING: /pci@0,0/pci8086,3410@9/pci1000,3150@0/sd@b,0 (sd6):
Mar 12 10:01:10 host02  Error for Command: read(10)                Error Level: Retryable
Mar 12 10:01:10 host02 scsi: [ID 107833 kern.notice]    Requested Block: 55060475                  Error Block: 55060539
Mar 12 10:01:10 host02 scsi: [ID 107833 kern.notice]    Vendor: SEAGATE                            Serial Number: 01234XXXXX
Mar 12 10:01:10 host02 scsi: [ID 107833 kern.notice]    Sense Key: Media Error
Mar 12 10:01:10 host02 scsi: [ID 107833 kern.notice]    ASC: 0x11 (unrecovered read error), ASCQ: 0x0, FRU: 0x0
   
• If they are 30 or more for the same drive during the two week period, the drive needs to be replaced; contact Oracle Support for drive replacement.
• If there is no uniform pattern, or if the errors are reported for multiple drives, proceed to Step 7.

7. Verify whether the fault(s) is/are observed for multiple drives

• If the issue is seen with a single drive, proceed to Step 8.
• If the issue is seen with multiple drives, proceed to Step 9.

8. Verify the physical LED indications of the drive

• If the Amber Fault LED is ON, the drive is faulty; contact Oracle Support for drive replacement.

9. Check the cable connectivity

Reference Cabling configuration for J4500
Reference Cabling configuration for J4200/J4400 - Single path
Reference Cabling configuration for J4200/J4400 - Multipath

• If the cabling is as per the documentation, proceed to Step 11.
• If not, proceed to Step 10.

10. Adjust the cabling as per the documentation and verify whether the host can access the drives properly

• If host can access the drives properly, proceed to Step 12.
• If host sees one of the Symptoms again, proceed to Step 11.

11. Verify SIM board LEDs and back panel indicators

Reference Back Panel Indications J4500
Reference Back Panel Indications J4200/J4400

Capture any Amber LED indications seen and proceed to Step 13.

12. Monitor the system for any errors for two days

• If the Symptoms repeat, proceed to Step 13.
• If no further Symptoms are seen, the issue is considered to be resolved.

13. Open a call for further analysis

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 contact Oracle Support and supply:

Critical Faults
Support Data Collection (if applicable) Reference <Document 1002514.1> Collecting Support Data for Arrays Using Sun StorageTek[TM] Common Array Manager
Detailed LED indications
Cabling configuration
Explorer output

References

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