Asset ID:	1-77-1017437.1
Update Date:	2011-03-01
Keywords:

---

Solution Type  Sun Alert Sure

Solution  1017437.1 :   Access to Data on a Sun StorEdge T3/T3+ and Sun StorEdge 6120 Array May be Temporarily Lost When a Substituted Drive is Replaced  


PreviouslyPublishedAs
228540

Product
Sun StorageTek T3 Array
Sun StorageTek T3+ Array
Sun StorageTek 6120 Array

Bug Id
<SUNBUG: 4932057>

Date of Resolved Release
01-APR-2005

Impact

On a Sun StorEdge T3/T3+ or Sun StorEdge 6120 array, access to data may be lost when a drive that has previously failed (and has been logically disabled and substituted) is removed. The data will be inaccessible until the volume is remounted and any necessary recovery actions are performed on the host. Since the loss of access is abrupt, loss of data not yet committed to disk is possible.

Contributing Factors

This issue can occur in the following releases:

SPARC Platform

• Sun StorEdge T3 Array with firmware 1.01a through 1.16c (as delivered with patch 109115-01 through 109115-06)
• Sun StorEdge T3 Array with firmware 1.18.0 through 1.18.4 (as delivered with patch 109115-10 through 109115-17)
• Sun StorEdge T3+ Array without firmware 3.1.0 (as delivered with patch 115180-01)
• Sun StorEdge 6120 Array without firmware 3.1.0 (as delivered with patch 115179-01)

The Sun StorEdge "ver" command at the T3, T3+ or 6120 system prompt can be used to determine the current firmware revision, as shown in the following example:

    6120a:/:<1>ver
6120 Release 3.1.0 Fri Dec 19 14:49:54 PST 2003 (129.156.169.50)
Copyright (C) 1997-2003 Sun Microsystems, Inc

Note: In order for the described issue to occur, a drive failure must first result in the successful substitution of the hot spare followed by a second drive failure in the same RAID set. On a RAID 5 volume, this issue can occur if a second drive fails in any slot. On a RAID 1 volume, this issue will only occur if the second drive failure is adjacent to the first failed drive.

Symptoms

The "vol stat" command shows one drive substituted and another drive failed in a volume. When the drive in the substituted state is removed, the volume is unmounted.

Workaround

To work around the described issue, do the following:

1. Replace the second failed drive and keep the substituted drive in place. Do not remove the substituted drive until the reconstruction process is complete.

2. Replace the first failed drive which was substituted by the standby drive. The volume is fixed once this reconstruction process is complete.

Note: Before replacing either failed drive, be sure to backup the data on the affected volume.

Resolution

This issue is addressed in the following releases:

SPARC Platform

• Sun StorEdge T3+ Array with firmware 3.1.0 (as delivered with patch 115180-01) or later
• Sun StorEdge 6120 Array with firmware 3.1.0 (as delivered with patch 115179-01) or later

Note: The "Relief/Workaround" provided above is the final resolution for the Sun StorEdge T3 array.

Modification History

References

<SUNPATCH: 115180-01>
<SUNPATCH: 115179-01>

Previously Published As
101661
Internal Comments

This is a regression previously fixed in firmware 1.17a and applies to T3 firmware releases 1.01a, 1.14, 1.16, 1.16c, 1.18.00, 1.18.01, 1.18.02, 1.18.03 and 1.18.04 as well as T3B firmware 2.1.X.

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 Escalation ID
1-6901727

Internal Resolution Patches
115180-01, 115179-01

Internal Sun Alert Kasp Legacy ID
101661, 57751 (Sun Alert)

Internal Sun Alert & FAB Admin Info
Critical Category: Availability ==> Pervasive
Significant Change Date: 2005-04-01
Avoidance: Patch, 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: 57751
Synopsis: Access to Data on a Sun StorEdge T3/T3+ and Sun StorEdge 6120 Array May be Temporarily Lost When a Substituted Drive is Replaced
Category: Availability
Product: Sun StorEdge T3/T3+, Sun StorEdge 6120 Array
BugIDs: 4932057
Avoidance: Workaround, Patch
State: Resolved
Date Released: 01-Apr-2005
Date Closed: 01-Apr-2005
Date Modified:
Escalation IDs: 1-6901727
Pending Patches:
Resolution Patches: 115180-01, 115179-01
FIN:
FCO:
Date Submitted: 21-Feb-2005, 28-Feb-2005, 08-Mar-2005, 23-Mar-2005
Submitter: [email protected]
Responsible Engineer: [email protected]
Responsible Manager: [email protected]
CTE group: NWS
Responsible Writer: [email protected]
Distribution: Public SunSolve

Workflow History:

WF State: Issued, 05-Apr-2005, Jeff Folla
WF Note: This Sun Alert was resolved at the time it was released.
Updated the sun alert accordingly.

WF State: Issued, 01-Apr-2005, David Mariotto
WF Note: rcvd final from submitter, release to "Contract"

WF State: Draft, 01-Apr-2005, David Mariotto
WF Note: rcvd final from submitter, release to "Contract"

WF State: Draft, 30-Mar-2005, Jeff Folla
WF Note: Sent to BU and 24 hour review

WF State: Draft, 29-Mar-2005, Jeff Folla
WF Note: Waiting for approval from submitter and responsible engineer.


WF State: Draft, 28-Mar-2005, Jeff Folla
WF Note: Received an email with the requested information. Sent to
submitter for review. Will send to 24 hour review upon approval.

WF State: Draft, 23-Mar-2005, Jeff Folla
WF Note: Sent email to the submitter requesting patch numbers and firmware versions
for the affected platforms.

WF State: Draft, 09-Mar-2005, Jeff Folla
WF Note: Article created.

Exported from KMS Creator Sat May 21 09:17:11 2005 GMT, [email protected]
Internal SA-FAB Eng Submission
Access to Data on a Sun StorEdge T3/T3+ and Sun StorEdge 6120 Array May be Temporarily Lost When a Substituted Drive is Replaced

Product_uuid
2a6d7d50-0a18-11d6-8e0b-f0bd33b24928|Sun StorageTek T3 Array
2a714b10-0a18-11d6-86e2-d56b387d4fbf|Sun StorageTek T3+ Array
2cd2e7d2-2980-11d7-9c3f-c506fe37b7ef|Sun StorageTek 6120 Array

References

SUNPATCH:115179-01
SUNPATCH:115180-01

Attachments

This solution has no attachment