QLogic OFED+ Host Software User Guide, Rev. B

D–SRP Configuration
QLogic SRP Configuration
• A SRP Initiator Extension is a 64-bit numeric value that is appended to the
port GUID of the SRP initiator port, which allows an SRP initiator port to
have multiple SRP maps associated with it. Maps are for FVIC only.
InfiniBand attached storage will use their own mechanism as maps are not
necessary.
• A SRP Initiator is the combination of an SRP initiator port and an SRP
initiator extension.
• A SRP Target is identified by the combination of an SRP target IOC and a
SRP target extension.
• A SRP Session defines a connection between an SRP initiator and a SRP
target.
• A SRP Map associates an SRP session with a Fibre Channel Target Device.
This mapping is configured on the VIO hardware. Maps are for FVIC only.
InfiniBand attached storage will use their own mechanism as maps are not
necessary.
NOTE:
• If a device connected to a map is changed, the SRP driver must
be restarted.
• If the connected device is unreachable for a period of time, the
Linux kernel may set the device offline. If this occurs the SRP
driver must be restarted.
• A SRP Adapter is a collection of SRP sessions. This collection is then
presented to the Linux kernel as if those sessions were all from a single
adapter. All sessions configured for an adapter must ultimately connect to
the same target device.
NOTE:
• The SRP driver must be stopped before OFED (i.e., openibd) is
stopped or restarted. This is due to SRP having references on
OFED modules. The Linux kernel will not allow those OFED
modules to be unloaded.
QLogic SRP Configuration
The QLogic SRP is installed as part of the QLogic OFED+ Host Software or the
QLogic InfiniBand Fabric Suite. The following section provide procedures to set up
and configure the QLogic SRP.
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