Support Notes for Red Hat Enterprise Linux ES v.4.5 for HP Integrity Servers
extract kernel-version.src.rpm from the source .rpm packages. Refer to the Red Hat
Enterprise Linux ES v. 4 Release Notes for instructions.
NOTE: These instructions are in the file RELEASE-NOTES-en, but not in the file
RELEASE-NOTES.
11. 32-bit emulation is not automatically installed with Red Hat Enterprise Linux ES v. 4. To
obtain this functionality, install the ia32el package from the Intel Itanium Extras CD. Then
install any additional compatibility binaries you need from the 32-bit Compatibility Layer
Binaries CD. Refer to the Red Hat Enterprise Linux ES v. 4 Release Notes for instructions.
12. HP supports factory recovery to Fibre Channel Storage. See the PDF document at the
following Web site for more information:
http://h20000.www2.hp.com/bc/docs/support/SupportManual/c00166110/c00166110.pdf
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 all Integrity systems.
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. Installation to a software RAID 6 volume may result in a kernel panic. If this occurs, try
using a different RAID type such as RAID 5.
Known Issues 9