Asset ID:	1-77-1000249.1
Update Date:	2011-03-04
Keywords:

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Solution Type  Sun Alert Sure

Solution  1000249.1 :   Firmware Patch 112276-08 For Sun StorEdge T3+ WITHDRAWN, May Cause Data Loss  


PreviouslyPublishedAs
200354

Product
Sun StorageTek T3 Array
Sun StorageTek T3+ Array

Bug Id
<SUNBUG: 4940346>

Date of Workaround Release
17-NOV-2003

Date of Resolved Release
01-DEC-2003

Impact

Sun StorEdge T3+ firmware patch 112276-08 (firmware 2.01.05) has been withdrawn from SunSolve due to a very rare possibility of data loss. In 2.01.05 firmware, there is a possibility that the execution of the "vol verify fix" command could block access to a volume or slice that is part of a particular volume of the T3+ array.

Firmware Patch 112276-08 (firmware 2.01.05) has been WITHDRAWN and is no longer available from SunSolve.

Contributing Factors

This issue can occur with the following release:

• Sun StorEdge T3+ Array with firmware patch 112276-08 (firmware 2.01.05) and without firmware patch 112276-09 (firmware 2.01.06)

Note: Please reference the patch README installation instructions on how to determine the current firmware level.

Symptoms

The "vol verify fix" operation is recommended to be run once in at least 30 days to ensure the good health of T3+ volumes. This operation checks the parity of data blocks for RAID 5 volumes and mirror blocks for RAID 1 volumes. If the data and parity/mirror does not match, then it logs the information that a data and parity/mirror mismatch is seen on the corresponding T3 volume (if vol slicing is not enabled) or slice (if vol slicing is enabled). After the mismatch, it blocks the read and write access to the smallest element - slice (if vol slicing is enabled) or volume (if vol slicing is not enabled), which may result in data loss. After this it continues scanning the volume until the end.

Workaround

To work around the described issue until the patch can be applied:

A) Backout patch 112276-08 (firmware 2.01.05) and re-install 112276-07 (firmware 2.01.04).

Or, if this issue is already present:

B) Backup the data, remove the read/write blockage by deleting the affected volume or slice, recreate it, then restore the data from backup.

Resolution

This issue is addressed in the following release:

• Sun StorEdge T3+ Array with firmware patch 112276-09 (firmware 2.01.06) or later

Modification History
Date: 01-DEC-2003

• Resolution patch released
• Updated Contributing Factors and Resolution sections
• Re-release as "Resolved"

References

<SUNPATCH: 112276-09>

Previously Published As
101390
Internal Comments

Internal Contributor/submitter
dave.bruce@sun.com

Internal Eng Business Unit Group
NWS (Network Storage)

Internal Eng Responsible Engineer
guruprasad.sakaleshpura@sun.com

Internal Services Knowledge Engineer
david.mariotto@sun.com

Internal Escalation ID
548999

Internal Resolution Patches
112276-09

Internal Sun Alert Kasp Legacy ID
101390, 57425 (Sun Alert)

Internal Sun Alert & FAB Admin Info
Critical Category: Data Loss
Significant Change Date: 2003-11-17, 2003-12-01
Avoidance: Patch, Workaround
Responsible Manager: tejinder.singh@sun.com
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: 57425
Synopsis: Firmware Patch 112276-08 For Sun StorEdge T3+ WITHDRAWN, May Cause Data Loss
Category: Data Loss
Product: Sun StorEdge T3+ Array
BugIDs: 4940346
Avoidance: Patch, Workaround
State: Resolved
Date Released: 17-Nov-2003, 01-Dec-2003
Date Closed: 01-Dec-2003
Date Modified: 01-Dec-2003
Escalation IDs: 548999
Pending Patches:
Resolution Patches: 112276-09
FIN:
FCO:
Date Submitted: 13-Nov-2003
Submitter: dave.bruce@sun.com
Responsible Engineer: guruprasad.sakaleshpura@sun.com
Responsible Manager: tejinder.singh@sun.com
CTE group: CPRE NWS EMEA
Responsible Writer: david.mariotto@sun.com
Distribution: Public SunSolve

Workflow History:

WF State: Issued, 01-Dec-2003, David Mariotto
WF Note: Add updates for Resolution and re-release.

WF State: Issued, 17-Nov-2003, David Mariotto
WF Note: Sent for release.

WF State: Draft, 17-Nov-2003, David Mariotto
WF Note: Sending for signoff.

WF State: Draft, 14-Nov-2003, David Mariotto
WF Note: Sent for review - close by Monday noon.

WF State: Draft, 14-Nov-2003, David Mariotto
WF Note: Article created.

Exported from KMS Creator Sat May 21 09:05:51 2005 GMT, olaf.reineke@sun.com
Internal SA-FAB Eng Submission
Firmware Patch 112276-08 For Sun StorEdge T3+ WITHDRAWN, May Cause Data Loss

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

References

SUNPATCH:112276-09

Attachments

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