Document fins/I0889-1
FIN #: I0889-1
SYNOPSIS: A potential for data loss exists with SBus Fibre Channel Adapters
(6757A) attached to Sun StorEdge 99xx arrays or to Fibre Channel Tape
drives in specific configurations
DATE: Oct/31/02
KEYWORDS: A potential for data loss exists with SBus Fibre Channel Adapters
(6757A) attached to Sun StorEdge 99xx arrays or to Fibre Channel Tape
drives in specific configurations
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- Sun Proprietary/Confidential: Internal Use Only -
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FIELD INFORMATION NOTICE
(For Authorized Distribution by SunService)
SYNOPSIS: A potential for data loss exists with SBus Fibre Channel Adapters
(6757A) attached to Sun StorEdge 99xx arrays or to Fibre Channel
Tape drives in specific configurations.
SunAlert: No
TOP FIN/FCO REPORT: Yes
PRODUCT_REFERENCE: StorEdge 99xx Array
PRODUCT CATEGORY: Storage / SW Admin
PRODUCTS AFFECTED:
Systems Affected:
-----------------
Mkt_ID Platform Model Description Serial Number
------ -------- ----- ----------- -------------
- Anysys - System Platform Independent -
X-Options Affected:
-------------------
Mkt_ID Platform Model Description Serial Number
------ -------- ----- ----------- -------------
X6757A - - SBus Dual FC Network Adapter -
- SE99XX ALL StorEdge 99XX Array -
PART NUMBERS AFFECTED:
Part Number Description Model
----------- ----------- -----
375-3048-01 SBus Dual FC Network Adapter -
REFERENCES:
BugId: 4719105 - data miscompare with X6757A attached to SE99xx.
PatchId: 
112244: Hardware/FCode: SBus Dual Fibre Channel Host
Adapter.
ECO: WO_25016
ESC: 540371 - 6757 HBAs not working with E10K andHitachi 9980 bug
4719105.
HDS Alert: 001A - Potential Data Integrity Problem with SUN X6757A and
QLogic QLA2202FS SBus HBAs.
PROBLEM DESCRIPTION:
Customer configurations with SBus Dual Fibre Channel Adapters (6757A)
attached to either Sun StorEdge 99xx Arrays with 2Gb Fibre Channel
cards, or to Fibre Channel Tape drives, may experience data loss when
data is written to disk or tape.
This issue affects SBus Dual Fibre Channel Adapters with FCode 1.13.06
or lower, in one of the following scenarios:
1. 6757A with SE9900 arrays with the HS (High Speed) Fibre Channel port
(2Gbit) cards in FC/AL or switched FC/AL mode (TL, QL, etc.).
Switched fabric Point- To-Point configurations are not affected. The
channel port cards affected are Sun P/N T8-DKC-F410I-8HSE and
T9-DKC-F460I-8HSE.
2. 6757A with Fibre Channel tape drives if running an application that
transfers blocksizes which are not a multiple of 512 bytes. This may
include the 'cpio' command with the '-C' option, or a customer's own
developed tool. Standard tape ISV backup applications and UNIX
applications are not at risk as they use blocksizes which are
multiples of 512. The 'dd' command is not at risk because of the
way it manages data flow. This FC tape scenario is considered to be
very low risk.
NOTES:
1. 6757A cards connected to A3500FC, A5x00, or T3/T3+ arrays are not at
risk.
2. No system error messages are generated when this issue occurs.
To determine the FCode version for a 6757A adapter, run 'luxadm qlgc' as
shown below:
hba2-41# luxadm qlgc
Found Path to 4 FC100/P, ISP2200, ISP23xx Devices
Opening Device: /devices/sbus@2,0/SUNW,qlc@1,30000/fp@0,0:devctl
Detected FCode Version: ISP2200 Sbus FC-AL Host Adapter Driver: 1.13.06
10/31/01
Opening Device: /devices/sbus@2,0/SUNW,qlc@1,30400/fp@0,0:devctl
Detected FCode Version: ISP2200 Sbus FC-AL Host Adapter Driver: 1.13.06
10/31/01
Opening Device: /devices/pci@a,2000/SUNW,qlc@2/fp@0,0:devctl
Detected FCode Version: ISP2300 FC-AL Host Adapter Driver: 1.13.08
04/10/02
Opening Device: /devices/pci@b,2000/SUNW,qlc@2/fp@0,0:devctl
Detected FCode Version: ISP2300 FC-AL Host Adapter Driver: 1.13.08
04/10/02
Complete
hba2-41#
In the above output, "ISP2200 Sbus FC-AL Host Adapter" indicates the
presence of the 6757A adapter. Since it is a dual channel board,
luxadm prints two instances of the driver/FCode attached. The 6757A
board in the above example has Rev. 1.13.06 FCode.
To identify a 99XX array which contains a 2Gb High Speed Fibre Channel
port, use one of these methods:
Use the Hitrack tool to check the P/N and revision of the CHA boards. In
addition, this information is provided in the installation manual:
9910/60 DKC-F410I-8HSE is 2G CHA p/n WP411-C,SH261A
9970/80 DKC-F460I-4HSE " p/n WP461-E,SH481A
" DKC-F460I-8HSE " p/n WP461-B,SH481A
" DKC-F460I-8HLE " p/n WP461-C,SH481A
The SVP may also be used to check P/N's:
Go to Modify mode - select Install - select PCB Revision Display.
Reference page SVP02-1020 in the maintenance manual.
The 6757A uses a Field Programmable Gate Array (FPGA) to provide the
internal SBus to PCI interface. The FPGA controls all data movement,
including those resulting from DMA requests. The FPGA maintains
pointers used for data access, data alignment on writes and it also
provides flow control for data transfer to insure SBus address
boundaries are not exceeded.
Most DMA data transfers through the FPGA will be initiated in 64 bit
PCI mode and will transition to 32 bit transfer mode when the residual
byte count is equal to or less than 8 bytes. Under certain conditions
logic in the FPGA fails to align the data correctly and the last 4
bytes in a data stream are overlaid by the previous 4 bytes.
Use of frame size or block size that is not a multiple of 512 bytes can
trigger an error condition in FPGA. With the SE9900 and the 2Gbit
channel port cards attached to 6757A HBA in FC/AL or switched FC/AL
mode, the HBA and channel port card will negotiate to a frame size that
is not a multiple of 512 bytes.
CPRE has contacted all SE99XX customers with the 6757A adapter
installed. None of the customers contacted utilize the 2Gb SE9900 in
FC/AL or switched FC/AL mode. No Sun customer has reportedly
encountered this data integrity problem.
This issue has been addressed with FCode 1.13.07 which is available in
Patch 112244. All new 6757A adapters (P/N 375-3048-02) shipped from
the supplier will contain FCode 1.13.07 and FPGA 2.3, which corrects
the problem.
IMPLEMENTATION:
---
| | MANDATORY (Fully Proactive)
---
---
| X | CONTROLLED PROACTIVE (per Sun Geo Plan)
---
---
| | REACTIVE (As Required)
---
CORRECTIVE ACTION:
The following recommendation is provided as a guideline for authorized
Sun Services Field Representatives who may encounter the above
mentioned problem.
All 6757A adapter cards with FCode 1.13.06 attached to Sun StorEdge
99XX arrays or attached to Fibre Channel Tape drives should be upgraded
to FCode version 1.13.07 with Patch 112244. Please follow the
installation instructions provided in the README file.
COMMENTS:
None
============================================================================
Implementation Footnote:
i) In case of MANDATORY FINs, Sun Services will attempt to
contact all affected customers to recommend implementation of
the FIN.
ii) For CONTROLLED PROACTIVE FINs, Sun Services mission critical
support teams will recommend implementation of the FIN (to their
respective accounts), at the convenience of the customer.
iii) For REACTIVE FINs, Sun Services will implement the FIN as the
need arises.
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