Installation guide

Enterprise Linux 5.2 for the IBM System z does not support the firstboot functionality during initial
program load.
To properly initialize setup for Red Hat Enterprise Linux 5.2 on the IBM System z, run the following
commands after installation:
/usr/bin/setup — provided by the setuptool package.
/usr/bin/rhn_register — provided by the rhn-setup package.
9.6. ia64 Architecture
Some Itanium systems cannot properly produce console output from the kexec purgatory code.
This code contains instructions for backing up the first 640k of memory after a crash.
While purgatory console output can be useful in diagnosing problems, it is not needed for kdump
to properly function. As such, if your Itanium system resets during a kdump operation, disable
console output in purgatory by adding --noio to the KEXEC_ARGS variable in
/etc/sysconfig/kdump.
Running perftest will fail if different CPU speeds are detected. As such, you should disable CPU
speed scaling before running perftest.
When the kdump kernel is booted, the following error will appear in the boot log:
mknod: /tmp/initrd.[numbers]/dev/efirtc: No such file or directory
This error results from a malformed request to create the efirtc in an incorrect path. However, the
device path in question is also created statically in the initram fs when the kdump service is
started. As such, the run-time creation of the device node is redundant, harmless, and should not
affect the performance of kdum p.
Some systems may be unable to boot the kdump kernel properly. In such cases, use the
machvec=dig kernel parameter.
Recording needs to be manually enabled on Dell M4300 and M6300. To do this, perform the
following steps:
1. Open alsam ixer.
2. Press T ab to toggle [Capture] in the View field (located at the upper left part of the menu).
3. Press the Space bar.
4. To verify that recording is enabled, the text above the ADCMux field should display L R
CAPT UR.
On Intel Itanium-based systems running SELinux in enforcing mode, either the
allow_unconfined_execm em _dyntrans or allow_execmem Booleans must be turned on to
allow the IA-32 Execution Layer (the ia32el service) to operate correctly. If the
allow_unconfined_execm em _dyntrans Boolean is off, but the allow_execm em Boolean is
on, which it is by default in Red Hat Enterprise Linux 5, the ia32el service supports 32-bit emulation;
however, if both Booleans are off, emulation fails.
10. Added Packages
cmirror-1.1.36-1.el5
Group: System Environm ent/Base
Summary: cm irror - T he Cluster Mirror Package
Description:
Red Hat Enterprise Linux 5 5.3 Release Notes
4 4