Support Notes for Red Hat Enterprise Linux 5.2 for HP Integrity Servers

Enter cd /etc/init.da.
b. To configure, enter chkconfig salinfod on
c. To start salinfod without rebooting, enter service salinfod start
13. If you use cdrecord to burn a CD, you may need to eject the CD and reinsert before you
can mount it.
14. 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
shown 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.
15. 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.
16. RHEL 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
(http://www.docs.hp.com/en/5992-3193/index.html).
17. 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
Integrity system using the MP console port as the Linux system console. This problem does
not exist on mid-range and high-end Integrity platforms.
When rebooting the system, the user should either manually confirm the system has booted,
or use scripts to track the system boot on the serial console and automatically intervene as
necessary. The only intervention required to continue the boot process is to send a character
to produce a receiver interrupt on the console UART (for example, pressing a key). Note
that while experiencing this console hang is rare, it can happen multiple times on the same
boot cycle.
18. The cdrecord program may hang when burning a CD-RW disk with unsupported media
using certain models of CD/DVD-ROM Combo and DVD+RW drives shipped in rx2620 and
rx4640 servers.
Use only approved HP CD-RW media to prevent burn hangs. Try different brands of media
if HP media is not available.
Known Issues 9