Support Notes for Red Hat Enterprise Linux 5 for HP Integrity Servers

11. No support for uncertified .rpm packages.
If you add uncertified .rpm packages to the operating system, the operating system will
not be supported by Red Hat. Red Hat supports only .rpm packages bundled in supported
Linux distributions for Integrity servers and official Red Hat Updates for those distributions.
HP supports the Linux software it distributes.
12. 32-bit emulation is not automatically installed with Red Hat Enterprise Linux 5. Refer to the
Red Hat Enterprise Linux 5 Release Notes for instructions on installing the IA32 emulation
layer and other IA32 compatibililty libraries.
13. Correctable platform events such as single-bit memory errors are routinely logged into
NVRAM. To ensure errors are logged into the /var/log file, configure the salinfod file
to start at boot, executing the following commands as root:
a. Enter cd /etc/init.d
b. To configure, enter chkconfig salinfod on
c. To start salinfod without rebooting, enter service salinfod start
14. If you use cdrecord to burn a CD, you may need to eject the CD and reinsert before you
can mount it.
15. This issue affects Linux running on the following systems: rx2620, rx2660, rx3600, rx4640,
and rx6600.
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.
16. In a text-based installation, the partition displays from either autopartition or disk druid
will display filesystems of 1 terabyte or greater without a size suffix such as M or G. These
filesystems will appear to be much smaller than they really are.
17. Red Hat Enterprise Linux can be preloaded on the HP Integrity server disk in the factory
prior to customer shipment. In the event of a system disk failure, the recovery process of
this "factory preloaded OS image" is a "cold install" directly from the Red Hat media kit or
the Red Hat Network. For additional instructions on installing Red Hat Enterprise Linux
on an Integrity server, consult the HP integrity Essentials Foundation Pack for Linux User's
Guide.
18. Output from the Management Processor (MP) serial ports may hang due to a failure to
reassert a transmit empty interrupt in the MP UART. When used as a serial console, this
output hang may lead to a hang during Linux boot. This condition may occur on any low-end
Known Issues 9