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Full Discussion: Receiving: 4B436A3D 0313233216 T H fscsi0 LINK ERROR
Operating Systems AIX Receiving: 4B436A3D 0313233216 T H fscsi0 LINK ERROR Post 302968715 by Devyn on Sunday 13th of March 2016 11:52:14 PM
Old 03-14-2016
Receiving: 4B436A3D 0313233216 T H fscsi0 LINK ERROR
Hey All,

I'm receiving the following error off of a Power5 9133-55A after I write 2-5 files to the LUN:

4B436A3D 0313233216 T H fscsi0 LINK ERROR

I can create the filesystem, volume groups etc etc. All goes well until there is sustained activity to the LUN then the above error shows up with no messages on the target.

Code:
[ AIX root@mdsnim01:/htpc ] lsattr -El fcs0
bus_intr_lvl  277        Bus interrupt level                                False
bus_io_addr   0xdf800    Bus I/O address                                    False
bus_mem_addr  0xe8081000 Bus memory address                                 False
init_link     al         INIT Link flags                                    True
intr_priority 3          Interrupt priority                                 False
lg_term_dma   0x800000   Long term DMA                                      True
max_xfer_size 0x400000   Maximum Transfer Size                              True
num_cmd_elems 200        Maximum number of COMMANDS to queue to the adapter True
pref_alpa     0x1        Preferred AL_PA                                    True
sw_fc_class   2          FC Class for Fabric                                True
tme           no         Target Mode Enabled                                True
[ AIX root@mdsnim01:/htpc ] lsattr -El fscsi0
attach       al        How this adapter is CONNECTED         False
dyntrk       yes       Dynamic Tracking of FC Devices        True+
fc_err_recov fast_fail FC Fabric Event Error RECOVERY Policy True+
scsi_id      0x1       Adapter SCSI ID                       False
sw_fc_class  3         FC Class for Fabric                   True
[ AIX root@mdsnim01:/htpc ]

Code:
[ AIX root@mdsnim01:/ ] /hbainfo
Total Adapters:                 2
This Adapter Index:             0
Adapter Name:                   com.ibm-df1000fd-1
Manufacturer:                   IBM
SerialNumber:                   1B70704261
Model:                          df1000fd
Model Description:              FC Adapter
HBA WWN:                        20000000C9621B82
Node Symbolic Name:
Hardware Version:
Driver Version:                 7.1.3.0
Option ROM Version:             02C82774
Firmware Version:               271304
Vendor Specific ID:             0
Number Of Ports:                1
Driver Name:                    /usr/lib/drivers/pci/efcdd
Port Index:                     0
Node WWN:                       20000000C9621B82
Port WWN:                       10000000C9621B82
Port Fc Id:                     1
Port Type:                      Private Loop
Port State:                     Operational
Port Symbolic Name:
OS Device Name:                 fcs0
Port Supported Speed:           4 GBit/sec
Port Speed:                     4 GBit/sec
Port Max Frame Size:            2112
Fabric Name:                    0000000000000000
Number of Discovered Ports:     1
Seconds Since Last Reset:       5060
Tx Frames:                      938801
Tx Words:                       478609152
Rx Frames:                      35195
Rx Words:                       3098112
LIP Count:                      1
NOS Count:                      0
Error Frames:                   0
Dumped Frames:                  0
Link Failure Count:             0
Loss of Sync Count:             2
Loss of Signal Count:           0
Primitive Seq Protocol Err Cnt: 0
Invalid Tx Word Count:          4
Invalid CRC Count:              0
[ AIX root@mdsnim01:/ ]
[ AIX root@mdsnim01:/ ]

Code:
Error log information:
          Date: Sun Mar 13 23:32:52 EDT 2016
          Sequence number: 7007
          Label: FCP_ERR4

The initiator card on the above is an LP11002 card and the target card is a QLogic 2464 card. I tried all sorts of things over the last 2 months but no luck. Still I get the above error. The connection breaks each time a significant amount of data is being transferred (1-4 GB). I'm wondering how to debug that card further? I'm aware of an APAR on some AIX versions that throw the above but I upgraded the OS as suggested yet the error still remains. Any other way to debug the above? I tried P2P and the cards negotiate for a few seconds then the connection is dropped. Arbitrary loop seems to work best but the connection fails on sustained writes.

[ AIX root@mdsnim01:/ ] oslevel -s
7100-03-00-0000
[ AIX root@mdsnim01:/ ]

Cheers,
DH
 

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