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FCO #: A0153-1

Status: inactive

Date: Aug/24/99

Keywords: 

SCSI transport soft retry errors on Ultra 60 systems running external Ultra SCSI I/O devices

Top FIN/FCO Report: No

Products Reference: Ultra 60 Motherboard Linfinity terminator

Product Category: Desktop / System Board ; Storage / SCSI I/O

Product Affected: 

Systems Affected:

Mkt_ID   Platform   Model   Description   Serial Number
------   --------   -----   -----------   -------------
   -       A23        -     Ultra 60            -

X-options Affected:

Mkt_ID   Platform   Model   Description                           Serial Number
------   --------   -----   -----------                           -------------
SG-XDSK020C-18G	  -   -   StorEdge MultiPack 18.2-GByte (2X9.1GB) 10000 RPM   -
SG-XDSK020B-36G	  -   -   StorEdge MultiPack 36.4-GByte (2X18.2GB) 7200 RPM   -
SG-XDSK040C-36G	  -   -   StorEdge MultiPack 36.2-GByte (4X9.1GB) 10000 RPM   -
SG-XDSK040B-72G	  -   -   StorEdge MultiPack 72.2-GByte (4X18.2GB) 7200 RPM   -
SG-XDSK060C-54G	  -   -   StorEdge MultiPack 54.6-GByte (6X9.1GB) 10000 RPM   -
SG-XDSK060B-109G  -   -   StorEdge MultiPack 109.2-GByte (6X18.2GB) 7200 RPM  -

Parts Affected: 

Part Number   Description   Model
-----------   -----------   -----
501-4450-10 (or below)   Ultra 60 motherboard   -

(SCSI Devices)
Type    Vendor    Model     SerialNumber(Min)    SerialNumber(Max)    Firmware
----    ------    -------   ------------------   ------------------   --------
N/A

References: 

ECO: WO_15048
   LEAP: 1018
   FCO: A0149-1

Issue Description: 

SCSI transport soft retry errors could occur on Ultra 60 system running external
Ultra SCSI I/O devices.  A typical error message for this failure would be as
follows:

 unix: WARNING: /sbus@b,0/SUNW,fas@3,8800000 (fas1):
 unix:         Connected command timeout for Target 14.0
 unix: WARNING: /sbus@b,0/SUNW,fas@3,8800000 (fas1):
 unix:         Target 14 reducing sync. transfer rate
 unix: fas:    Cmd dump for Target 14 Lun 0:
 unix: fas:     cdb=[ 0xa 0x0 0x14 0x0 0x80 0x0 ]
 unix: fas:    State=DATA_DONE Last State=DATA
 unix: fas:    pkt_state=0x7 pkt_flags=0x4000 pkt_statistics=0x61
 unix: WARNING: /sbus@b,0/SUNW,fas@3,8800000/sd@e,0 (sd58):
 unix:         SCSI transport failed: reason 'timeout':retrying command
 unix: WARNING: /sbus@b,0/SUNW,fas@3,8800000 (fas1):
 unix:         Connected command timeout for Target 14.0
 
When there is a Sun MultiPack connected to the onboard external Ultra SCSI port,
the system gives errors in the messages file.

Below is a sample of the errors that show up in /var/adm/messages:
       
Jan 31 07:08:12 courses unix: WARNING: /pci@1f,4000/scsi@3,1 (glm1):
Jan 31 07:08:12 courses unix:   Target 2 reducing sync. transfer rate
Jan 31 07:08:12 courses unix: WARNING: ID[SUNWpd.glm.sync_wide_backoff.6014]
Jan 31 07:08:12 courses unix: WARNING: /pci@1f,4000/scsi@3,1/sd@1,0 (sd16):
Jan 31 07:08:12 courses unix: SCSI transport failed: reason 'reset': retrying command
Jan 31 07:08:12 courses unix:
Jan 31 07:08:12 courses unix: WARNING: /pci@1f,4000/scsi@3,1/sd@2,0 (sd17):
Jan 31 07:08:12 courses unix: SCSI transport failed: reason 'timeout': retrying command
Jan 31 07:08:12 courses unix:
Jan 31 07:09:23 courses unix: glm1: Cmd (0x601e77a0) dump for Target 1 Lun 0:
Jan 31 07:09:23 courses unix: glm1: cdb=[ 0x8 0x0 0x6 0x0 0x80 0x0 ]
Jan 31 07:09:23 courses unix: glm1: pkt_flags=0x4000 pkt_statistics=0x61 pkt_state=0x7
Jan 31 07:09:23 courses unix: glm1: pkt_scbp=0x0 cmd_flags=0x8e0
Jan 31 07:09:23 courses unix: WARNING: /pci@1f,4000/scsi@3,1 (glm1):
Jan 31 07:09:23 courses unix: Connected command timeout for Target 1.0
Jan 31 07:09:23 courses unix: WARNING: ID[SUNWpd.glm.cmd_timeout.6017]
Jan 31 07:09:23 courses unix: WARNING: /pci@1f,4000/scsi@3,1 (glm1):
Jan 31 07:09:23 courses unix: Target 1 reducing sync. transfer rate
Jan 31 07:09:23 courses unix: WARNING: ID[SUNWpd.glm.sync_wide_backoff.6014]
Jan 31 07:09:23 courses unix: WARNING: /pci@1f,4000/scsi@3,1/sd@1,0 (sd16):
Jan 31 07:09:23 courses unix: SCSI transport failed: reason 'reset': retrying

This problem only appears when the Ultra 60 is connected to a MultiPack via the
system's external SCSI port AND configured as a raid system.  During a file
transfer the Ultra 60 receives a disconnected timeout message.  Device driver
traces indicate that REQs and ACKs were out of sync.

The root cause has determined the Linfinity SCSI terminators are causing jitter
on the REQ signal such that the pulse width was not meeting the SCSI specs, and
thereby causing the REQ signal not to be recognized by either the target or the
initiator.

Corrective action was implemented in Sun Manufacturing via ECO# WO_15048 on
April 5th, 1999, and in Enterprise Services via LEAP_1018 as part of the
implementation of FCO A0149-1.

Implementation: 

---
  	|   |  	MANDATORY (Fully Pro-Active)
	 ---    

         ---
  	|   | 	CONTROLLED PRO-ACTIVE (per Sun Geo Plan) 
	 ---   
			
         ---
  	| X | 	UPON FAILURE
	 ---

Replacement Time Estimate: 

30 minutes

Special Considerations: 

Corrective Action: 

Upon failure replace 501-4450-10 (or below) with 501-4450-12 (or above).

Billing Type: 

Warranty: Sun will provide parts at no charge under Warranty 
           Service. On-Site Labor Rates are based on how the
           system was initially installed.

 Contract: Sun will provide parts at no charge. On-Site Labor Rates
           are based on the type of service contract.

 Non Contract: Sun will provide parts at no charge. Installation by
               Sun is available based on the On-Site Labor Rates 
               defined in the Price List.

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Implementation Footnote: 

________________________

i)   In case of Mandatory FCOs, Enterprise Services will attempt to contact
      all known customers to recommend the part upgrade.

ii)  For controlled proactive swap FCOs, Enterprise Services mission critical
     support teams will initiate proactive swap efforts for their respective 
     accounts, as required.

iii) For Replace upon Failure FCOs, Enterprise Services partners will implement 
     the necessary corrective actions as and when they are required.

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* From there, follow the hyperlink path of "SunService Documentation" and 
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