Owners Manual

Login using the following command fails:
#iscsiadm -m discovery -t st -p <IP> -I iface1 -o new#iscsiadm -m discovery -t
st -p <IP> -I iface1 -l
Workaround Set net.ipv4.conf.default.rp_lter to 0 or 2 in /etc/sysctl.conf, and reboot the system.
Cause In the 2.6.31 kernel, the net.ipv4.conf.default.rp_lter = 1 behavior has changed to be more strict in the I/O.
IPMI commands may result in high processor utilization
Description On PowerEdge systems that are managed through IPMI, the kipmid thread may consume high processor
resources when you issue IPMI commands to the BMC.
Workaround
Set the option kipmid_max_busy_us to the ipmi_si driver module.
This option can be set by creating a le, /etc/modprobe.d/ipmi.conf with the following line and reloading the
ipmi_si module:
options ipmi_si kipmid_max_busy_us=300
Updating rmware through Dell EMC Utility Partition may fail
in the UEFI mode
Description
When you boot to Red Hat Enterprise Linux 6 in the UEFI mode, updating the rmware through the DUP may fail
after DUP reboots the system.
Workaround Boot the system with the reboot=k kernel command line option before ashing the rmware. Add this option
to /etc/grub.conf to be persistent across reboots.
Cause
DUP relies on a warm system reset to enable rmware ashing. By default, the kernel performs a cold reset in the
UEFI mode.
A resolution for this issue will be available in a future update of the operating system.
For more information on DUP, see the Dell EMC Update Packages User’s Guide at www.dell.com/manuals.
Finding more information
• See www.dell.com/support for:
– The latest BIOS and rmware versions.
– Files that are specic to your Dell EMC hardware running the Red Hat Enterprise Linux operating system.
– Information about Dell EMC hardware that is running the Red Hat Enterprise Linux operating system.
• Additional information can be found at www.redhat.com/en/technologies/linux-platforms/enterprise-linux.
• Sign up for mailing lists at www.lists.us.dell.com.
• Search for previously posted information that addresses issues that you may encounter at www.lists.us.dell.com/pipermail/linux-
poweredge.
• For additional information, also see www.dell.com/community.
Installation instructions and important information
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