User guide

DataDirect Networks SFA™ OS 1.5.3.0 Release Notes Revision B | 14
5.7 Red Hat 6.2
This section applies to the SFA12K-40, SFA12K-20, SFA10K-X, SFA10K-M, and S2A6620.
• Updating the kernel and multipath packages to the latest version is
recommended. As of this release, DDN qualified versions include:
o the kernel version - 2.6.32-279.2.1.el6.x86_64
o the multipath version - 0.4.9-56.el6_3.1.x86_64.
• The kernel modules that come with OFED 1.5.4 will cause I/O threads to
hang when the data path between the controller and switch is lost. A
workaround for this issue is to use the Red Hat supplied InfiniBand solution.
For a switched InfiniBand environment:
o Install the in-box OFED drivers that come with RHEL 6 Update 2
o Update the multipath-tools package to a minimal version of 0.4.9-
56.el_3.1
o Do not use user-friendly names in multipath.conf
o Configure RHEL 6 Update 2 to a minimal kernel version of 2.6.32-
279.2.1.el6
• These packages are required for InfiniBand support on Red Hat. (Use the
command, yum groupinstall infiniband to install all IB packages):
o ibutils-1.5.7-6.el6.x86_64
o infiniband-diags-1.5.12-3.el6.x86_64
o opensm-libs-3.3.13-1.el6.x86_64
o opensm-3.3.13-1.el6.x86_64
o libmlx4-1.0.2-5.el6.x86_64
o srptools-0.0.4-15.el6.x86_64
• To start IB lun discovery, issue these commands:
1. modprobe ib_umad
2. modprobe ib_uverbs
3. modprobe mlx4_ib
4. opensm -g <port GUID> (where port GUID is the port GUID from ibstat
output
5.
run_srp_daemon -R 20 -T 10 -nce -i <ca_name> -p <port> (where ca_name
is the channel adapter name and port is the port number)