Support Notes for Red Hat Enterprise Linux AS v.3 for the Itanium Processor on HP Integrity Servers

Support Note for Red Hat Enterprise Linux AS v.3 for the Itanium® Processor on HP Integrity Servers
Issues and Known Problems
Chapter 112
7. Performing ifconfig down on an Integrity Server with an A5506B NIC card can cause
your system to crash under certain circumstances. Upgrade your operating system to Red
Hat Enterprise Linux AS v. 3 Update 4 via Red Hat Network for a driver patch that
addresses this uncommon problem. When available, upgrade to Update 5 for a second
driver patch.
8. SCSI errors and resets cause system failures.
SCSI errors and resets for any reason cause system failures. For example, if your disks
have a problem such as a parity or disk error that causes a SCSI reset, the system will
fail. Combining a Seagate drive with the ds2100 disk carrier causes electrical problems on
the SCSI bus and subsequent reset attempts that also result in system failure. Do not use
Seagate drives with this disk carrier.
9. HP supports factory recovery to Fibre Channel Storage. Go to http://www.hp.com, enter
Booting 64-bit Linux Systems from a Storage Network Application Notes in the search box
and press
Enter to access a pdf file with more information.
10. Before booting Red Hat Enterprise Linux AS v.3 Update 3 on an nPartition on an rx7620,
rx8620, or Integrity Superdome server, your ACPI configuration value must be set to
single-pci-domain acpi flag to eliminate any bus address conflicts and ensure 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 the following instructions:
a. From the EFI shell, type acpiconfig and press
Enter.
b. You should see the following output: Acpiconfig settings: single-pci-domain. If
you see something different, continue to the next step to reset the value. Otherwise,
stop here.
c. To set the ACPI configuration value to single-pci-domain:
1. From the EFI shell, type acpiconfig single-pci-domain and press
Enter.
2. You should see the following output: single-pci-domain settings have been
enabled. A reset is required for the settings to take effect.
d. Type reset and press
Enter.
11. If you want rx7620 or rx8620 server hardware to power off when the shutdown -h comand
or poweroff command is issued, run the acpiconfig enable softpowerdown
command from the EFI shell and reset the nPartition to make the ACPI configuration
take effect.