Support Notes for Red Hat Enterprise Linux ES 4.7 for HP Integrity Servers

Kernel
• HP SAS Integrated Raid (IR) Configuration Utility May Cause Kernel Panics
The Integrated Raid (IR) Configuration Utility, cfggen, is a Linux command line utility
that configures the IR functionality of the HP Serial Attached SCSI (SAS) controllers that
are used in LSI-1068-based HP SAS controllers. The cfggen utility causes kernel panics
when creating volumes with RHEL4U7.
Until this issue is resolved in the MPT driver, HP recommends that you use the EFI
executable, cfggen.efi, utility to create volumes.
If cfggen is installed on a system running RHEL4U7, the HP Support Pack installer will
remove it.
For information about using the cfggen.efi utility, see the SmartSetup Scripting Toolkit
Deployment Guide:
http://www.docs.hp.com/en/5991-6250/
Hardware
• Intermittent FTP data truncation when using an HP Procurve 4108gl switch
If you are using an HP Procurve 4108gl switch on a heavily loaded system, you may
experience intermittent data truncation with FTP transfers through the network. This can
be avoided with the following steps:
1. Connect to the HP Procurve 4108gl switch using telnet or serial console, and then login.
2. From the switch command line interface, enter the config command.
3. Enter the no int all lacp command.
• System panics resulting from Fibre Channel storage arrays directly connected to the
system
System panics may occur on HP Integrity servers running RHEL when Fibre Channel storage
arrays are directly connected to the system.
If you plan to connect Fibre Channel storage arrays to HP Integrity servers running RHEL,
you must connect through a Fibre Channel switch. For the BL860c Server Blade, you must
use either the Fibre Channel switch module (AE370A, AE371A, or AE372A) or an external
Fibre Channel switch.
Software
• 32-bit emulation and other 32-bit functionality
The 32-bit emulation is not automatically installed with RHEL ES 4.7. To obtain this
functionality, install the ia32el package from the RHEL ES 4 for Itanium Extras Disc.
You can install any additional compatibility binaries needed from the RHEL ES 4.7
Compatibility Layer Disc. For instructions, see the RHEL ES 4 Release Notes as described in
“Installation Documentation” (page 8).
• Use of the cdrecord program
The cdrecord program may hang when burning a CD-RW disk with unsupported media
using certain models of CD/DVD combo and DVD+RW drives shipped in rx1600, rx1620,
rx2600, rx2620, and rx4640 servers. Use only approved HP CD-RW media to prevent burn
hangs. Try different brands of media if HP media is not available.
In addition, when using cdrecord to burn a disc, you may need to eject the disc and reinsert
before you can mount it.
14 Recommendations, Limitations, and Known Issues