User Manual

Driver FeaturesRev 2.2-1.0.1

Mellanox Technologies

Manual Activation of High Availability

Initialization: (Execute after each boot of the driver)

1. Execute modprobe dm-multipath

2. Execute modprobe ib-srp

3. Make sure you have created file /etc/udev/rules.d/91-srp.rules as described above.

4. Execute for each port and each HCA:

srp_daemon -c -e -R 300 -i <InfiniBand HCA name> -p <port number>

This step can be performed by executing srp_daemon.sh, which sends its log to /var/log/

srp_daemon.log.

Now it is possible to access the SRP LUNs on

/dev/mapper/.

It is possible for regular (non-SRP) LUNs to also be present; the SRP LUNs may be

identified by their names. You can configure the /etc/multipath.conf file to change

multipath behavior.

It is also possible that the SRP LUNs will not appear under /dev/mapper/. This can

occur if the SRP LUNs are in the black-list of multipath. Edit the ‘blacklist’ section in

/etc/multipath.conf and make sure the SRP LUNs are not black-listed.

Automatic Activation of High Availability

• Set the value of SRP_DAEMON_ENABLE in

/etc/infiniband/openib.conf to

"yes".

For the changes in

openib.conf to take effect, run:

/etc/init.d/openibd restart

• Start srpd service, run: service srpd start

• From the next loading of the driver it will be possible to access the SRP LUNs on /dev/

mapper/

It is possible that regular (not SRP) LUNs may also be present; the SRP LUNs may be

identified by their name.

• It is possible to see the output of the SRP daemon in /var/log/srp_daemon.log

4.1.2.7 Shutting Down SRP

SRP can be shutdown by using “rmmod ib_srp”, or by stopping the OFED driver (“

/etc/

init.d/openibd stop”), or as a by-product of a complete system shutdown.

Prior to shutting down SRP, remove all references to it. The actions you need to take depend on

the way SRP was loaded.

There are three cases:

1. Without High Availability

When working without High Availability, you should unmount the SRP partitions that were

mounted prior to shutting down SRP

2. After Manual Activation of High Availability