Dell Mellanox Family of Adapters - Manual (Page 25)

User Manual for Mellanox ConnectX®-3 10/40 Gigabit Ethernet Adapters for Dell PowerEdge Servers Rev 1.1
Mellanox Technologies 25
• The installation process unlimits the amount of memory that can be pinned by a user
space application. See
Step 6.
• Man pages will be installed under /usr/share/man/
4.1.7 Post-installation Notes
• Most of the Mellanox OFED components can be configured or reconfigured after the
installation by modifying the relevant configuration files.
4.1.8 Uninstalling Mellanox OFED
Either use the distribution specific uninstall.sh script or use the script /usr/sbin/
ofed_uninstall.sh to uninstall the Mellanox OFED package. The ofed_uninstall.sh is part
of the ofed-scripts RPM.
4.2 Linux Driver Features
4.2.1 iSCSI Extensions for RDMA (iSER)
iSCSI Extensions for RDMA (iSER) extends the iSCSI protocol to RDMA. It permits data to be
transferred directly into and out of SCSI buffers without intermediate data copies.
4.2.2 iSER Initiator
The iSER initiator is controlled through the iSCSI interface available from the iscsi-initiator-utils
package.
Make sure iSCSI is enabled and properly configured on your system before proceeding with
iSER.
Targets settings such as timeouts and retries are set the same as any other iSCSI targets.
Example for discovering and connecting targets over iSER:
iSER also supports RoCE without any additional configuration required. To bond the RoCE
interfaces, set the
fail_over_mac option in the bonding driver.
4.2.3 Quality of Service (QoS) Ethernet
4.2.3.1 Mapping Traffic to Traffic Classes
Mapping traffic to TCs consists of several actions which are user controllable, some controlled
by the application itself and others by the system/network administrators.
If targets are set to auto connect on boot, and targets are unreachable, it may take a long
time to continue the boot process if
timeouts and max retries are set too high.
iscsiadm -m discovery -o new -o old -t st -I iser -p -l