Diskful InstallationΒΆ
Prepare dependency packages in the pkglist
In order for the Mellanox installation script to execute successfully, certain dependency packages are required to be installed on the compute node. xCAT provides sample package list files to help resolve these dependencies. The samples are located at
/opt/xcat/share/xcat/ib/netboot/<os>/
.To use the
/opt/xcat/share/xcat/ib/netboot/rh/ib.rhels7.ppc64le.pkglist
, edit your existingpkglist
file for the target osimage and add the following at the bottom:#INCLUDE:/opt/xcat/share/xcat/ib/netboot/rh/ib.rhels7.ppc64le.pkglist#
Configure the
mlnxofed_ib_install
script to install the MNLX_OFED driversxCAT has a concept of postscripts that can be used to customize the node after the operating system is installed.
Mellanox recommends that the operating system is rebooted after the drivers are installed, so xCAT recommends using the
postscripts
attribute to avoid the need for a second reboot. To invoke themlnxofed_ib_install
as a postscriptchdef -t node -o <node_name> \ -p postscripts="mlnxofed_ib_install -p /install/<path-to>/<MLNX_OFED_LINUX.iso>"
[kernel mismatch issue] The Mellanox OFED ISO is built againt a series of specific kernel version. If the version of the linux kernel does not match any of the Mellanox offered pre-built kernel modules, you can pass the
--add-kernel-support
argument to the Mellanox installation script to build the kernel modules based on the version you are using.chdef -t node -o <node_name> \ -p postscripts="mlnxofed_ib_install -p /install/<path-to>/<MLNX_OFED_LINUX.iso> \ -m --add-kernel-support -end-"
Provision the node
Verification
The Mellanox IB drivers are located at:
/lib/modules/<kernel_version>/extra/
Use the
ibv_devinfo
comamnd to obtain information about the InfiniBand adapterCheck the status of
openibd
servicesysVinit:
service openibd status
systemd:
systemctl status openibd.service