Support Notes for Red Hat Enterprise Linux AS v.4 Update 3 for the Intel Itanium Processor on HP Integrity Servers

Type cd /etc/init.d and press Enter.a.
b. To configure, type chkconfig salinfod on and press Enter.
c. To start salinfod without rebooting, type service salinfod start and press Enter.
16. If you use cdrecord to burn a CD, you may need to eject the CD and reinsert before you can mount
it.
17. This issue affects Linux running on the following systems: rx1600, rx1620, rx2600, rx2620, rx4640,
rx7620, rx8620, and Superdome.
The Management Processor UART on these systems does not supply the Carrier Detect signal. This
causes applications to hang when opening the UART device, waiting for Carrier Detect, unless they
use the O_NDELAY or O_NONBLOCK flag.
For example, echo foo > /dev/ttyS0 hangs.
This is usually not a problem because /dev/ttyS0 is usually used as a console, the agetty process
opens it with O_NONBLOCK, and processes spawned by agetty generally inherit the already-opened
device.
However, there are some cases where the device must be opened again, and applications will observe
the hang.
You may also need to add the -L option to the agetty line in the /etc/inittab file as show below
to resolve the problem:
co:2345:respawn:/sbin/agetty -L ttyS0 9600 vt100-nav
After editing the file, signal the init process to re-read the inittab file with the following command:
kill -HUP 1
If you are logged in to the console, then exit and log in again to restart the agetty.
18. Before booting Red Hat Enterprise Linux AS v.3 or v.4 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.
19. 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.
The normal behavior on rx7620 and rx8620 servers is for an nPartition to be made inactive (all cells
are in a boot-is-blocked state) when shutdown -h or poweroff is issued from the Red Hat Linux
command line. This behavior is established with the acpiconfig disable powerdown setting,
which is the normal setting for the single-pci-domain ACPI configuration.
On HP Integrity Superdome servers, an nPartition is always made inactive when halted from the operating
system (for example, after shutdown -h), and this behavior cannot be changed.
When softpowerdown is enabled on an rx7620 or rx8620 server, if one nPartition is defined in the
server then halting the operating system powers off the server cabinet (including all cells and I/O
chassis). On an rx7620 or rx8620 server with multiple nPartitions, halting the operating system from
an nPartition with softpowerdown enabled causes only the resources on the local nPartition to be
8 Support Notes for Red Hat Enterprise Linux AS v.4 Update 3