How to change HBA Tachyon settings/parameters

[Erika_4]

Could you please give me directions about the command to change the SAN topology of an Tachyon HBA?

I know that command fcmsutil shows the HBA attributes, but I don't know how I can change them.

Could you please help me with that?

Tks,
Erika

[Sridhar Bhaskarla]

Hi Erika,

I believe the topology automatically detected based on how the adapter is attached. It's not a configurable setting.

-Sri

[Ashwani Kashyap]

The TAchyon HBA Autodetects the Topology its attached to and sets its attributes accordingly that can be seen by fcmsutil .

What is it actually that you are trying to do .

[Michael Tully]

The HBA cards are auto-detect. They will tell you the current status from the 'Topology' field in the output silimlar to that of the below:

# /opt/fcms/bin/fcmsutil /dev/td0

Vendor ID is = 0x00103c
Device ID is = 0x001028
TL Chip Revision No is = 2.3
PCI Sub-system Vendor ID is = 0x00103c
PCI Sub-system ID is = 0x000006
Topology = PTTOPT_FABRIC
Local N_Port_id is = 0x011700
N_Port Node World Wide Name = 0x50060b00000b0379
N_Port Port World Wide Name = 0x50060b00000b0378
Driver state = ONLINE
Hardware Path is = 0/2/0/0
Number of Assisted IOs = 376
Number of Active Login Sessions = 0
Dino Present on Card = NO
Maximum Frame Size = 960
Driver Version = @(#) PATCH_11.11: libtd.a : Jun 28 2002, 11:08:35, PHSS_26799

If it is directly connected the topology will report "Private Loop"

[Erika_4]

Hi guys! Thank you for all replies. Could you please explain me how can I set the attributes of an HBA via fcmsutil? How is the sintax command?

The below information is the display of fcmsutil command to my HBA:

# fcmsutil /dev/td1

Vendor ID is = 0x00103c
Device ID is = 0x001029
XL2 Chip Revision No is = 2.3
PCI Sub-system Vendor ID is = 0x00103c
PCI Sub-system ID is = 0x00128c
Previous Topology = PRIVATE_LOOP
Link Speed = UNINITIALIZED
Local N_Port_id is = 0x000002
Local Loop_id is = 124
N_Port Node World Wide Name = 0x50060b0000219f21
N_Port Port World Wide Name = 0x50060b0000219f20
Driver state = AWAITING_LINK_UP
Hardware Path is = 0/0/10/0/0
Number of Assisted IOs = 0
Number of Active Login Sessions = 0
Dino Present on Card = NO
Maximum Frame Size = 960
Driver Version = @(#) PATCH_11.11: libtd.a : Jun 28 2002, 11:08:35, PHSS_26799

[Mel Burslan]

Erika,

as all of the above posts indicated, you cannot 'set' the parameters of a Tachyon inteface. There is no user tunable parameter for these interfaces.

[Michael Tully]

As previously mentioned the HBA cards are auto-detect, which basically means there are no settings that you can actually change. From the symptoms you display, the cable is either not connected, faulty or there is a port problem at the destination. If the connection was good, the driver state would report "ONLINE"