IBM Support

MA40589 - OSP-INTSRVSUP-SRC573BB300-INCORROUT DEPLOY OF AN ESX TEMPLATE
CAUSES TARGET ADAPTER TO FAIL

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 APAR (Authorized Program Analysis Report)

Abstract

OSP-INTSRVSUP-SRC573BB300-INCORROUT DEPLOY OF AN ESX TEMPLATE
CAUSES TARGET ADAPTER TO FAIL

Error Description

Customer is running ESX 4.0 U1. D/T3550 M2 with 32 Gb          
of memory, and a single quad core processor 2.8 GHZ. 750 Gb    
NWSSTG linked to the server and is running virtual machines    
in ESX on the NWSSTG. Dual port Qlogic card which was          
running MPIO but has since removed an NWSH from the multipath  
group and changed to use a single NWSH.                        
                                                               
Attempts to deploy a template that is about 1 Gb and            
expands to 20 Gb for the virtual machine. Virtual machine      
contains Ubuntu, but has attempted to deploy windows images as  
well. This action always causes the HBA or HBAs (when using    
mpio) to fail immediately with SRC573BB300 or SRC573BA6D9.      
                                                               
Both HBAs and the planer in the IBM i have been replaced        
without changing the result. Initial hardware investigation    
indicated that the adapter may not be handling an unexpected    
large write that is outside of its maximum burst parameters,    
but it is still being investigated.                            
                                                               
VMware support was contacted by the customer but they have so  
far seen no issues.                                            

Problem Summary

Please see the ERROR DESCRIPTION section.                      

Problem Conclusion

There was a problem in the iSCSI adapter driver that caused    
large (> 2MB) SCSI write transfers to fail the adapter. When    
large ESX storage spaces (> 512 Gb) are created the block size  
must be set to 4Mb or 8Mb, which results in the large SCSI      
writes. The driver can now handle the large transfers without  
issue.                                                          

Temporary Fix

Comments

COMMENTS:                                                      
573BB300                                                        
573BA6D9                                                        

Circumvention


PTFs Available

R610 MF52438 PTF Cover Letter   1256
R611 MF52631 PTF Cover Letter   1256
R710 MF52632 PTF Cover Letter   1270

Affected Modules

         
         

Affected Publications

Summary Information

Status............................................ CLOSED PER
HIPER........................................... No
Component.................................. 9400DG300
Failing Module.......................... RCHMGR
Reported Release................... R610
Duplicate Of..............................




System i Support

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Document Information

Modified date:
15 October 2011