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Asset ID: 1-77-1000473.1
Update Date:2011-02-25
Keywords:

Solution Type  Sun Alert Sure

Solution  1000473.1 :   Failed Upgrade on a Sun StorEdge 6920 May Lead to Loss of Configuration  


Related Items
  • Sun Storage 6920 System
  •  
Related Categories
  • GCS>Sun Microsystems>Sun Alert>Criteria Category>Availability
  •  
  • GCS>Sun Microsystems>Sun Alert>Release Phase>Resolved
  •  

PreviouslyPublishedAs
200611


Product
Sun StorageTek 6920 System

Bug Id
<SUNBUG: 6434706>

Date of Workaround Release
25-AUG-2006

Date of Resolved Release
28-Mar-2008

During a rolling upgrade of a Sun StorEdge 6920 ... see below for details:

1. Impact

During a rolling upgrade of a Sun StorEdge 6920, if the upgrade is aborted, or the upgrade fails, then it is possible for the last phase of the upgrade to be missed. This could affect availability of data as hosts can only access mapped volumes. If the mapping and/or volume definition is lost, then the host will be denied access.


2. Contributing Factors

This issue can occur on the following platform:

  • Sun StorEdge 6920

The described issue has been observed while attempting to upgrade to firmware version 3.0.1.13. However, this issue may be common and generic to the general upgrade process.

A known cause of this issue is for "auto-save" and "auto-failback" to be left in the disabled state. These settings are normally disabled during an upgrade, and re-enabled by the last phase, which executes the UPGRADE STOP command.

When the DSP is rebooted, or MIC failover occurs, it rereads its "startup.cfg" file. If "auto-save" has been disabled, and the DSP is rebooted with the answer "No" to the question "OK to overwrite configuration file[Y]?" - then the "startup.cfg" file is likely to be out of step with the current configuration.

Running with "auto-failback" disabled may also affect the redundancy and availability of the DSP.

3. Symptoms

If the described issue occurs, after a DSP reboot, DSP volumes may be renamed to "vol/default-volxx". Mappings between hosts and volumes can be lost, or revert back to a previous configurations.


4. Workaround

After a failed upgrade, ensure that the following parameters are set to "enabled" in the DSP:

  • auto-save
  • auto-failback

Running the command "upgrade stop" should set these to the correct value.


5. Resolution
There are no further updates planned for this Sun Alert document. If
you need additional assistance regarding this issue, please contact Sun
Services.


This Sun Alert notification is being provided to you on an "AS IS"
basis. This Sun Alert notification may contain information provided by
third parties. The issues described in this Sun Alert notification may
or may not impact your system(s). Sun makes no representations,
warranties, or guarantees as to the information contained herein. ANY
AND ALL WARRANTIES, EXPRESS OR IMPLIED, INCLUDING WITHOUT LIMITATION
WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, OR
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ACKNOWLEDGE THAT SUN SHALL IN NO EVENT BE LIABLE FOR ANY DIRECT,
INDIRECT, INCIDENTAL, PUNITIVE, OR CONSEQUENTIAL DAMAGES THAT ARISE OUT
OF YOUR USE OR FAILURE TO USE THE INFORMATION CONTAINED HEREIN. This
Sun Alert notification contains Sun proprietary and confidential
information. It is being provided to you pursuant to the provisions of
your agreement to purchase services from Sun, or, if you do not have
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notification may only be used for the purposes contemplated by these
agreements.


Copyright 2000-2008 Sun Microsystems, Inc., 4150 Network Circle, Santa Clara, CA 95054 U.S.A. All rights reserved.


Modification History
28-Mar-2008: Resolved


Previously Published As
102556
Internal Comments


Internal Contributor/submitter
jerome.smith@sun.com

Internal Eng Business Unit Group
NWS (Network Storage)

Internal Eng Responsible Engineer
jerome.smith@sun.com

Internal Services Knowledge Engineer
jeff.folla@sun.com

Internal Escalation ID
1-18030557

Internal Sun Alert Kasp Legacy ID
102556

Internal Sun Alert & FAB Admin Info
Critical Category: Availability ==> Pervasive
Significant Change Date: 2006-08-25
Avoidance: Workaround
Responsible Manager: Lorraine.Dilliway@Sun.COM
Original Admin Info: [WF 25-Aug-2006, Jeff Folla: Approved by submitter. Sending for release.]

[WF 23-Aug-2006, Jeff Folla: Made changes per comments during the review process. Sent to submitter asking him to approve changes.]

[WF 22-Aug-2006, Jeff Folla: I have not heard back from submitter with comments. Sent for 24hr. and Bus review.]

[WF 8-Aug-2006, Jeff Folla: Sent to submitter for review.]
Product_uuid
67794720-356d-11d7-8ef2-ce2ac2bc9136|Sun StorageTek 6920 System

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