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Asset ID: 1-77-1000059.1
Update Date:2011-02-25
Keywords:
Solution Type  Sun Alert Sure

Solution  1000059.1 :   T3+ Array In Loop Mode Goes Offline From Fabric Switch After 'volslice remove' is Run  

Related Items 
    

  • Sun Storage T3+ Array
    •  
Related Categories 
    

  • GCS>Sun Microsystems>Sun Alert>Criteria Category>Availability
    •  
  • GCS>Sun Microsystems>Sun Alert>Release Phase>Workaround
    •  

PreviouslyPublishedAs
200075 


Product
Sun StorageTek T3+ Array

Bug Id

<SUNBUG: 6577650>


Date of Workaround Release
21-SEP-2007


Impact


When a T3+ array with firmware 3.2.3.3 (and above) is attached to a Fabric switch and a volume slice is removed using 'volslice remove', the complete loop goes offline and all devices (LUNs) become unavailable.


Contributing Factors


This issue can occur in the following release:




SPARC Platform


    

  • Sun StorageTek T3+ array Firmware 3.2.3.3 and above
    • 



Notes:


    

  1. No other storage arrays or firmware releases are affected by this issue.
    2. 

  2. This issue only occurs when the T3+ is attached to a Fabric Switch or similar High-Availability configuration (T3+ direct attach is not affected).
    3. 



To determine the firmware revision on the T3+ array, log in to the T3+ and run the following command:


    t3m:/:<1>ver
    T3B Release 3.2.6 Mon Feb  5 01:00:35 MST 2007 (129.158.142.117)
    Copyright (C) 1997-2006 Sun Microsystems, Inc.
    All Rights Reserved.



 


Symptoms


After 'volslice remove' is run, errors similar to the following are reported to the attached host:


    Jun 20 17:00:34 v4u-880h fctl: [ID 517869 kern.warning] WARNING: fp(5)::N_x Port
    with D_ID=620ce8, PWWN=50020f2300    009720 disappeared from fabric
    Jun 20 17:00:34 v4u-880h fctl: [ID 517869 kern.warning] WARNING: fp(4)::N_x Port
    with D_ID=620ce8, PWWN=50020f2300    009720 disappeared from fabric
    Jun 20 17:00:35 v4u-880h fctl: [ID 517869 kern.warning] WARNING: fp(4)::N_x Port
    with D_ID=620ae4, PWWN=50020f2300    00921a disappeared from fabric
    Jun 20 17:00:35 v4u-880h fctl: [ID 517869 kern.warning] WARNING: fp(5)::N_x Port
    with D_ID=620ae4, PWWN=50020f2300    00921a disappeared from fabric



Workaround


To work around this issue, set the 'fc_topology' to 'fabric_p2p' on the array by doing the following (logged in to the array):


    t3m:/:<6>sys fc_topology fabric_p2p
    WARNING - Changing topology will disrupt i/o traffic.
    Continue ? [N]: y



 


Resolution


A final resolution is pending completion.




 Previously Published As

 103074

 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 Escalation ID

 1-21897382



 Internal Sun Alert Kasp Legacy ID

 103074



 Internal Sun Alert & FAB Admin Info

 Critical Category: Availability ==> HA-Failure

 Significant Change Date: 2007-09-21

 Avoidance: Workaround

 Responsible Manager: [email protected]

 Original Admin Info: [WF 21-Sep-2007, dave m: no review comments, send for release]

 [WF 20-Sep-2007, dave m: draft created, send for review]



 Product_uuid

 2a714b10-0a18-11d6-86e2-d56b387d4fbf|Sun StorageTek T3+ Array



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