Using '.vol init fast' on a 6020 in a 6920 configuration to rebuild a lun requires additional steps to insure data integrity.

Asset ID:	1-73-1000172.1
Update Date:	2011-04-28
Keywords:

Solution Type FAB (standard) Sure

Solution 1000172.1 : Using '.vol init fast' on a 6020 in a 6920 configuration to rebuild a lun requires additional steps to insure data integrity.

Related Items


Sun Storage 6920 System

Related Categories


GCS>Sun Microsystems>Sun FAB>Standard>Reactive

PreviouslyPublishedAs
200221

Product
Sun StorageTek 6920 System

Bug Id
<SUNBUG: 6273852>

Impact

Using an improper procedure could result in data loss.

Symptoms

No symptoms provided.

Root Cause

Infodocs such as:

73185: Sun StorEdge[TM] T3+ Array: Re-Creating Vol-Slice LUNs
40430: Sun StorEdge[TM] T3 Array: Reconfigure/Rename a volume without losing the data

or any other procedure to wipe out the sysarea and rebuild a 6020 array without initialization within a 6920 ONLY can cause this issue to appear. The .vol init fast command will create a new WWN for the vdisk on the 6020 tray. The problem is that the DSP is expecting the OLD VDISK/LUN WWN from before the tray was rebuilt.

Workaround

See Resolution section below.

Resolution

A new command has been added to the 6020 firmware v3.2.2 to allow the WWN of the volume to be changed prior to allowing the DSP to see it. This firmware is contained in the 3.0.0.30 release of Unity.

The patch that contains the firmware and instructions for installation are located:

http://pts-storage.us.oracle.com/products/SE6920/downloads/Release_Downloads.html

Comments

A PTS escalation will be required to provide the correct procedure to rebuild the sysarea on the affected 6020 tray. Should this be identified as the action plan, please open a PTS-STORAGE escalation.

Related Information

URL: http://pts-storage.us.oracle.com/products/SE6920/downloads/Release_Downloads.html

Previously Published As
102089
howard.lapin@sun.com
Internal Eng Business Unit Group
KE Authors
Internal Eng Responsible Engineer
bill.stearns@sun.com
Internal Services Knowledge Engineer
sean.hassall@sun.com
Internal Escalation ID
1-8820289
Internal Kasp FAB Legacy ID
102089

Internal Sun Alert & FAB Admin Info
Critical Category:
Significant Change Date:
Avoidance: Workaround
Responsible Manager: null
Original Admin Info: null

Product_uuid
67794720-356d-11d7-8ef2-ce2ac2bc9136|Sun StorageTek 6920 System

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