User's Manual
Rebuilding Packages 41
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The DUP checks to make sure that the kernel, for the package you are
trying to apply to your target system, is supported. If the kernel is not
supported, you must follow the "Dynamic Kernel Support" procedures and
other procedures found later in this section to build a customized package.
NOTE: It is recommended that the --rebuild option be executed on a test system
having the same configuration.
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When you have successfully built a custom package for the operating system
and kernel that are running on your target system, read the warning
messages before applying the package to your target system.
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Specifically, the supported version of the Linux operating system and the
kernel version for which the package was created, match the running
operating system version and running kernel version on the target system.
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Continue applying the package to your system.
Dynamic Kernel Support
The kernel-dependent driver built into the DUP must be compatible with the
kernel on the system to which you are applying the package.
When you download a DUP from support.dell.com, the packages contain
precompiled driver modules for a limited set of kernels and their
corresponding GNU C compiler (GCC) versions. If the kernel that is running
on the system(s) to which you want to apply the DUP is not one of the
supported kernels, then the package will not work on your system. You can
rebuild your package by using your running kernel source and binutils.rpm,
and then apply the rebuilt package to any target systems that have the same
running kernel, as the one where you rebuilt your package.
Customers typically run three or four different kernels across thousands of
servers on their network. Applying updates to systems running these different
kernel versions becomes difficult if you have to meet these prerequisites on
each server across the network. When building customized packages, you can
set up a test system for rebuilding packages that meets the prerequisites for
rebuilding packages. See "Prerequisites for the Test System."