Special Firmware Installation Procedures Are Required to Prevent Loss of Volume Access on StorEdge T3/T3+ Arrays

Asset ID:	1-77-1000915.1
Update Date:	2011-03-04
Keywords:

Solution Type Sun Alert Sure

Solution 1000915.1 : Special Firmware Installation Procedures Are Required to Prevent Loss of Volume Access on StorEdge T3/T3+ Arrays

Related Items


Sun Storage T3 Array
 Sun Storage T3+ Array

Related Categories


GCS>Sun Microsystems>Sun Alert>Criteria Category>Availability
 GCS>Sun Microsystems>Sun Alert>Release Phase>Resolved

PreviouslyPublishedAs
201228

Product
Sun StorageTek T3 Array
Sun StorageTek T3+ Array

Bug Id
<SUNBUG: 4697868>

Date of Resolved Release
01-APR-2003

Impact

Installation of firmware versions 1.18.01 for T3 arrays or 2.01.03 for T3+ arrays may result in marginal disk drives in the arrays being marked as "disabled". This could lead to loss of disk volume access if special firmware pre-installation procedures are not followed.

Contributing Factors

This issue can occur in the following releases:

Sun StorEdge T3 Arrays upgraded to firmware 1.18.01 (patch 109115-12 ) or later
Sun StorEdge T3+ Arrays upgraded to firmware 2.01.03 (patch 112276-06) or later

Note: This issue occurs due to the inclusion of improved disk error handling routines in firmware versions 1.18.01 (T3) and 2.01.03 (T3+) and later. Because of this change in error handling, marginal disk drives which have already logged certain types of errors may be disabled (failed) by the new firmware. Loss of volume access can occur when two or more disks are disabled within a T3/T3+ array at the same time. Any of the following types of disk errors may cause the new firmware to fail a drive:

    Jun 05 06:16:14 ISR1[2]: W: Sense Key = 0x4, Asc = 0x15, Ascq = 0x1
Jun 05 06:16:14 ISR1[2]: W: Sense Data Description = Mechanical Positioning Error
Jul 31 16:19:22 ISR1[1]: N: u1d3 SCSI Disk Error Occurred (path = 0x1)
Jul 31 16:19:22 ISR1[1]: N: Sense Key = 0x1, Asc = 0x5d, Ascq = 0x0
Jul 31 16:19:22 ISR1[1]: N: Sense Data Description = Failure Prediction Threshold Exceeded

Symptoms

When this issue occurs, an affected T3/T3+ disk volume will become unavailable to software applications running on the attached host. The Solaris OS may display "Offline" error messages for the volume or "SCSI transport error, giving up". The T3/T3+ "syslog" file would show two or more disk drives within the volume as "disabled".

Workaround

Please see the Resolution section below for how to avoid the described issue.

Resolution

This issue is addressed by closely following the patch installation procedures provided in the README files for patches 109115-12 (or later) and 112276-06 (or later). The required steps are:

1) Inspect the "syslog" file from the T3/T3+ array for any of the errors shown above by running the following command:

     test_host% egrep -i'0x5D|Threshold|0x15|0x4|Mechanical|Positioning|Exceeded|Disk Error' syslog
Jun 05 06:16:14 ISR1[2]: W: u2d5 SCSI Disk Error Occurred (path = 0x0)
Jun 05 06:16:14 ISR1[2]: W: Sense Key = 0x4, Asc = 0x15, Ascq = 0x1
Jun 05 06:16:14 ISR1[2]: W: Sense Data Description = Mechanical Positioning Error
Jul 31 16:19:22 ISR1[1]: N: u1d3 SCSI Disk Error Occurred (path = 0x1)
Jul 31 16:19:22 ISR1[1]: N: Sense Key = 0x1, Asc = 0x5d, Ascq = 0x0
Jul 31 16:19:22 ISR1[1]: N: Sense Data Description = Failure Prediction Threshold Exceeded

2) Back up the data from volumes with disk drives reporting any one of the above errors.

3) Replace any disk drives reporting the above errors.

4) Verify the volume is in optimal working order.

5) Install the new firmware.

Modification History

Previously Published As
101219
Internal Comments

Internal Contributor/submitter
[email protected]

Internal Eng Business Unit Group
NWS (Network Storage)

Internal Eng Responsible Engineer
[email protected]

Internal Services Knowledge Engineer
[email protected]

Internal Sun Alert Kasp Legacy ID
101219, 52562 (Sun Alert)

Internal Sun Alert & FAB Admin Info
Critical Category: Availability ==> Pervasive
Significant Change Date: 2003-04-01
Avoidance: Workaround
Responsible Manager: [email protected]
Original Admin Info: This document has been imported from KMS Creator and may need adjustment before re-publishing.

This imported document has been reviewed/adjusted by:
Review Name:
Review Date:

Original KMS Creator attributes below:

--- PLEASE DO NOT MAKE ANY CHANGES BELOW THIS LINE! ---

Sun Alert ID: 52562
Synopsis: Special Firmware Installation Procedures Are Required to Prevent Loss of Volume Access on StorEdge T3/T3+ Arrays
Category: Availability
Product: Sun StorEdge T3/T3+ Array
BugIDs: 4697868
Avoidance: Workaround
State: Resolved
Date Released: 01-Apr-2003
Date Closed: 01-Apr-2003
Date Modified:
Escalation IDs:
Pending Patches:
Resolution Patches: see, above
FIN: I0876-2, I0936-1
FCO:
Date Submitted: 31-Mar-2003
Submitter: [email protected]
Responsible Engineer: [email protected]
Responsible Manager: [email protected]
CTE group: CPRE NWS US
Responsible Writer: [email protected]
Distribution: Public SunSolve

Workflow History:

WF State: Issued, 01-Apr-2003, Pete Stauffer
WF Note: Received Signoff and sent to SunSolve.

WF State: Draft, 01-Apr-2003, Pete Stauffer
WF Note: Received Signoff and sent to SunSolve.

WF State: Draft, 31-Mar-2003, Pete Stauffer
WF Note: Sent to [email protected].

WF State: Draft, 28-Mar-2003, Pete Stauffer
WF Note: Article created.

Exported from KMS Creator Sat May 21 08:57:16 2005 GMT, [email protected]
Internal SA-FAB Eng Submission
Special Firmware Installation Procedures Are Required to Prevent Loss of Volume Access on StorEdge T3/T3+ Arrays

Product_uuid
2a6d7d50-0a18-11d6-8e0b-f0bd33b24928|Sun StorageTek T3 Array
2a714b10-0a18-11d6-86e2-d56b387d4fbf|Sun StorageTek T3+ Array

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