3par 8450 problem about persistent port fail_over

[usopp]

Hi Everyone.

I have a 3PAR 8450 connected to host(OS:SUSE 12SP3,HBA: QLE 2692 FW:v8.03.04&Driver:v9.00.00.00-k,Switch:Brocade 6510)

As the following, primary port 1:0:2 corresponds to partner persistent port 0:0:2.

N:S:P Mode State   ----Node_WWN----  -Port_WWN/HW_Addr- Type Protocol Label Partner FailoverState

0:0:1 target ready 2FF70002AC019EE7 20010002AC019EE7   host FC       -    1:0:1  none

0:0:2 target ready 2FF70002AC019EE7 20020002AC019EE7   free FC       -   1:0:2  none

0:1:1 initiator ready 50002ACFF7019EE7 50002AC011019EE7   disk  SAS     DP-1    -    -

0:1:2 initiator ready 50002ACFF7019EE7 50002AC011019EE7   disk  SAS     DP-2    -    -

0:2:1 peer offline                - 00110A6ACF4C      free IP       -      -    -

0:2:2 peer offline                - 00110A6ACF4D      free IP       -      -    -

0:3:1 peer loss_sync                - 3464A9EA8F5D       fs IP       IP0   -    -

1:0:1 target ready 2FF70002AC019EE7 21010002AC019EE7     host   FC   -    0:0:1  none

1:0:2 target ready 2FF70002AC019EE7 21020002AC019EE7     host   FC   -    0:0:2  none

1:1:1 initiator ready 50002ACFF7019EE7 50002AC011019EE7   disk  SAS     DP-1    -    -

1:1:2 initiator ready 50002ACFF7019EE7 50002AC011019EE7   disk  SAS     DP-2    -    -

1:2:1 peer offline                - 00110A6AB24B4      free IP       -      -    -

1:2:2 peer offline                - 00110A6AB24B5    free IP       -      -    -

1:3:1 peer loss_sync                - 3464A9EA9189       fs IP       IP1   -    -

At this moment we can see 8 wwns of the host via cli showhost,

Id Name   Persona       -WWN/iSCSI_Name- Port

45 xxx     xxx          21000024FF7E9D2B 0:0:2

                         21000024FF7E9D2A 0:0:2

                         21000024FF7E9D2B 1:0:2

                         21000024FF7E9D2A 1:0:2

                        21000024FF2F4293 1:0:1

                         21000024FF28EA84 1:0:1

                         21000024FF28EA85 0:0:1

                         21000024FF2F4292 0:0:1

I plug out the optical fiber of port 1:0:2, then 1:0:2 fail_over to 0:0:2.

After a while I replug in the optical fiber,then 1:0:2 fail_back.

But I check the wwns via cli showhost, the 2 wwns of port 1:0:2 were missing.

Id Name   Persona       -WWN/iSCSI_Name- Port

45 xxx     xxx          21000024FF7E9D2B 0:0:2

                           21000024FF7E9D2A 0:0:2

                            21000024FF2F4293 1:0:1

                            21000024FF28EA84 1:0:1

                         21000024FF28EA85 0:0:1

                         21000024FF2F4292 0:0:1

I also checked the link, All connections are normal.

Does anyone know what is the root cause of the problem?Is there any known issues about persistent port fail_over?

And what can I do to solve this problem?

Thank you very much for any help!

[Sheldon Smith]

Not showing up as partners is the problem. What do the following commands show:

showportdev fcswitch 0:0:2
showportdev fcswitch 1:0:2

[usopp]

Hi  Sheldon Smith:

Thank you very much and sorry to reply you so late.

The commands show(The switch is Brocade6510):

host1 cli% showportdev fcswitch 1:0:2
------Name------ Logical_Name Type   Ports -----------Vendor-----------
100050EB1A8A65FC B_1    switch    48 Brocade Communications, Inc.

host1 cli% showportdev fcswitch 0:0:2
------Name------ Logical_Name Type   Ports -----------Vendor-----------
100050EB1A8A65FC B_1    switch    48 Brocade Communications, Inc.