371.2.3.For your machine to be part of the InfiniBand/VPI fabric, a Subnet Manager must be running on one ofthe fabric nodes. At this point, Mellanox OFED for Linux has already installed the OpenSM SubnetManager on your machine.For the list of installation options, run:./mlnxofedinstall --hInstallation ProcedureLogin to the installation machine as root.Mount the ISO image on your machine.# mount -o ro,loop MLNX_OFED_LINUX---.iso /mntRun the installation script./mnt/mlnxofedinstallLogs dir: /tmp/MLNX_OFED_LINUX-x.x-x.logsThis program will install the MLNX_OFED_LINUX package on your machine.Note that all other Mellanox, OEM, OFED, RDMA or Distribution IB packages will be removed.Those packages are removed due to conflicts with MLNX_OFED_LINUX, do not reinstall them.Starting MLNX_OFED_LINUX-x.x.x installation ...................Installation finished successfully.Attempting to perform Firmware update...Querying Mellanox devices firmware ...The DKMS (on Debian based OS) and the weak-modules (RedHat OS) mechanisms rebuild theinitrd/initramfs for the respective kernel in order to add the MLNX_OFED drivers.When installing MLNX_OFED without DKMS support on Debian based OS, or without KMPsupport on RedHat or any other distribution, the initramfs will not be changed. Therefore, theinbox drivers may be loaded on boot. In this case, openibd service script will automaticallyunload them and load the new drivers that come with MLNX_OFED.For unattended installation, use the --force installation option while running theMLNX_OFED installation script:/mnt/mlnxofedinstall --forceMLNX_OFED for Ubuntu should be installed with the following flags in the rootenvironment:./mlnxofedinstall --without-dkms --add-kernel-support --kernel version in chroot> --without-fw-update --forceFor example:./mlnxofedinstall --without-dkms --add-kernel-support --kernel3.13.0-85-generic --without-fw-update --forceNote that the path to kernel sources (--kernel-sources) should be added if the sourcesare not in their default location.