QLogic 7104-1M-CABLE User Manual

6–Configuring Drivers and Services
OpenFabrics Drivers and Services Configuration and Startup

6-4

IB0056101-00  H

S

For example:

# Use the UPDN algorithm instead of the Min Hop algorithm.
OPTIONS="-R updn"

For more information on OpenSM, see the OpenSM man pages, or look on the 

OpenFabrics web site.

SRP stands for SCSI RDMA Protocol. It was originally intended to allow the SCSI 
protocol to run over InfiniBand for Storage Area Network (SAN) usage. SRP 
interfaces directly to the Linux file system through the SRP Upper Layer Protocol 
(ULP). SRP storage can be treated as another device.

In this release, two versions of SRP are available: QLogic SRP and OFED SRP. 
QLogic SRP is available as part of the QLogicIB-Basic, Rocks Roll, and Platform 
OCS downloads. It is not available as a part of the RPM downloads.

SRP has been tested on targets from Engenio™ (now LSI Logic

®

) and DataDirect 

Networks™.

If you installed QLogic SRP as part of the QLogicIB-Basic download, configure it 
according to the steps shown in the QLogic ULP and Tools Reference Guide 
(OFED+ Users Guide).

To use OFED SRP, follow these steps:

1.

Add the line SRP_LOAD=yes to the module list in 
/etc/infiniband/openib.conf to have it automatically loaded.

2.

Discover the SRP devices on your fabric by running this command (as a root 
user):

# ibsrpdm

In the output, look for lines similar to these:

GUID:      0002c90200402c04
ID:        LSI Storage Systems SRP Driver 200400a0b8114527 
service entries: 1
service[  0]: 200400a0b8114527 / SRP.T10:200400A0B8114527

Before using SRP, the SRP targets must already be set up by your system 
administrator.