Here are the technical (not in tremendous detail I admit) notes from
bugzilla 506898:
"When installing to a z/VM guest or LPAR that is configured with 1 CPU
and/or less than 2 GB storage (memory), the installer will prompt for
the network configuration, regardless of whether these parameters appear
in the PARM or CONF files. This is due to an unexpected side effect of
a kernel change in RHEL 5.4, and will be fixed in the RHEL 5.5 installer.
There are multiple ways to workaround this issue:
First, define at least 2 CPUs to the LPAR or z/VM guest. Note that if
running under z/VM, defining an additional CPU does not require an
additional physical IFL.
If an additional CPU cannot be defined, the second workaround is to
define at least 2 GB storage (memory) to this guest or LPAR. Note that
under z/VM, this does not require additional physical storage.
If neither of these workarounds are possible, please contact Red Hat
support to obtain an intermediate kernel fix before RHEL 5.5 is released."
Here is a little more technical detail:
"The s390 parameter line has been marked as __initdata. During
parameter parsing, pointers to parameters are stored in an
environment/argument vector.
Before the init process is started, all __init* memory locations
are freed and, thus, the saved parameters are no longer available.
Solution: Remove the __initdata annotation from the s390 kernel
parameter line."
Justin
On 01/28/2010 10:39 AM, Scott Rohling wrote:
I don't have a RH login or anything, so can't view this... but very
curious bug! I was really confused when Sterling suggested defining a 2nd
CPU.
Scott
On Thu, Jan 28, 2010 at 8:35 AM, Justin Payne<[email protected]> wrote:
Tim,
This is a known issue and can be followed here:
https://bugzilla.redhat.com/show_bug.cgi?id=506898
Justin
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