User guide

DataDirect Networks SFA™ OS 2.0.0 Release Notes Revision A1 | 19
Issue
Freq.
Customer Impact
Resolution
controller instead of holding it
in reset
FPGA-80 (4)
update the FPGA
version reported will
be incorrect (0.255-
0.255)
disk enclosure for 60
seconds.
SEP reset signals false power
failure. FPGA-8
100% SHUTDOWN ENCLO-
SURE 1 RESTART
results in a false power
failure which causes
both canisters to save
cache and restart. This
is only a problem for
the head disk enclo-
sure
SHUTDOWN SUBSYSTEM
and manually power cycle
the head disk enclosure.
5.7 Red Hat 6.2
This section applies to the SFA12K-40, SFA12K-20, SFA10K-X, and SFA10K-M.
• Updating the kernel and multipath packages to the latest version is
recommended. As of this release, minimum 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