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

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/
• Possible MCA with some ELILO bootloader options
The ELILO bootloader can pass command-line options to the RHEL kernel. The max_addr=
and mem= options limit the amount of memory used by the kernel.
Some versions of the kernel handle these arguments incorrectly, resulting in an MCA that
crashes the system during boot. If the system boots successfully, there is no risk of a crash
due to this problem.
Booting with max_addr= or mem= can be useful for debugging problems, but is not a tested
feature. You can achieve similar effect by changing the configuration with the EFI
dimmconfig command or physically removing DIMMs.
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.
• nPartition ACPI setting must be correct before booting RHEL on some servers
Before booting RHELAS 3 or 4 on an nPartition on an rx7620, rx8620, or sx1000 server, your
ACPI configuration value must be set to single-pci-domain. This eliminates any bus
address conflicts and ensures that all I/O slots have a unique address. Although your server
should have the correct setting already, confirm it before proceeding and change it if necessary
using one of the following methods:
— Command line:
1. From the EFI shell, enter the acpiconfig command to display the current ACPI
settings.
The following message should be displayed:
acpiconfig settings: single-pci-domain
If something different is displayed, continue to the next step to reset the value.
Otherwise, stop here.
2. Set the ACPI configuration value to single-pci-domain from the EFI shell:
acpiconfig single-pci-domain
The following confirmation is displayed.
single-pci-domain settings have been enabled. A reset is
required for the settings to take effect.
14 Recommendations, Limitations, and Known Issues