Users Guide

Important Information

This section details information about software fixes, issues, and additional information for using SUSE Linux Enterprise Server 11 on your

Dell EMC system.

NOTE: Hibernation/sleep (S3, S4) mode is not supported on Dell EMC PowerEdge systems.

Topics:

• Consistent naming of network devices

• Issues and resolutions

Consistent naming of network devices

In the earlier versions of Linux, the interface names assigned by the operating system did not map to the corresponding ports on the

system board or on the add-in network adapters. For example, eth0 need not necessarily be associated with port Gb1 on the system.

SUSE Linux Enterprise Server 11 SP 2 has a new feature that supports consistent naming of network devices. The new naming scheme

uses biosdevname udev helper utility, developed by Dell EMC and released under the General Public License (GPL), to suggest new

names based on the location of the network adapters on the system as suggested by system BIOS.

The biosdevname utility enables the system BIOS to logically assign and map Ethernet interface names with the respective physical

ports on the system board or the add-in network adapters.

The new naming convention is as follows:

Lan-On-

Motherboard/

embedded

interfaces

em<port number>_<virtual function instance/NPAR index>

(ethernet-on-motherboard <1,2..>)

PCI add-in

interfaces

p<slot number>p<port number>_<virtual function instance/NPAR index>

NOTE: The new naming scheme is enabled by default on Dell EMC systems. To disable the new

naming scheme, run the command line biosdevname=0, during installation.

NOTE: For more information on the biosdevname utility and the new naming scheme, see the

document that describes the new naming convention for network devices at linux.dell.com/files/

whitepapers.

Issues and resolutions

This section details information about general issues, causes, and workarounds applicable to SUSE Linux Enterprise Server 11.

Kernel panic occurs when OMSA services are started on

SUSE Linux Enterprise Server 11.x

Description:

Kernel panic occurs when OpenManage Server Administrator (OMSA) services are started on SUSE Linux

Enterprise Server 11.x.

Workaround: Download and install the latest kernel version from the suse repository.

Cause: The Kernel might spend more time in servicing the kernel timer functions and set a flag to prevent the other code

from resetting the timer hardware (APIC timer). The kernel then programs the timer hardware for a timeout up to

100 ms to run the kernel timer functions. At the next timer hardware interrupt, this flag is cleared, where the flag

can be ignored for the specific code path. When the flag is ignored, the timer hardware might be set to an

Important Information 9