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git-svn-id: http://svn.code.sf.net/p/scst/svn/trunk@1566 d57e44dd-8a1f-0410-8b47-8ef2f437770f
66 lines
2.1 KiB
Plaintext
66 lines
2.1 KiB
Plaintext
Recompiling a RHEL 5 / CentOS 5 kernel
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- Look up the version of the installed kernel, e.g. through the
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following command:
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uname -r
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- Choose a RHEL / CentOS mirror
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- Download the source RPM matching the installed kernel version, e.g.
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kernel-2.6.18-92.1.22.el5.src.rpm
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- Now generate a kernel source tree from this source RPM by running
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the following commands as root:
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useradd mockbuild
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rpm -i kernel-2.6.18-92.1.22.el5.src.rpm
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The above commands will create a kernel spec file
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/usr/src/redhat/SPECS/kernel-2.6.spec and will create the files for
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building the kernel source tree in /usr/src/redhat/SOURCES/.
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- The kernel source tree can now be built by running the commands
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below. These commands will not only create a kernel source tree but will
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also install a kernel .config file:
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yum install unifdef
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rm -rf /usr/src/redhat/BUILD
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mkdir -p /usr/src/redhat/BUILD
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chown mockbuild /usr/src/redhat/BUILD
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sudo -u mockbuild rpmbuild -bp /usr/src/redhat/SPECS/kernel-2.6.spec
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- Next, apply the SCST patches to this kernel source tree:
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cd "/usr/src/redhat/BUILD/kernel-2.6.18/linux-2.6.18.$(uname -m)"
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patch -p1 <${SCST_SOURCE_DIR}/scst/kernel/rhel/scst_exec_req_fifo-rhel5.patch
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patch -p1 <${SCST_SOURCE_DIR}/iscsi-scst/kernel/patches/rhel/put_page_callback-rhel5.patch
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- Modify EXTRAVERSION in Makefile from "-prep" into "-scst". The text
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assigned to the EXTRAVERSION variable will be appended to the kernel
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version 2.6.18 and will appear a.o. in the GRUB boot menu. Choosing a
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name that refers to the SCST project will help to recognize the
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customized kernel.
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- If you are familiar with kernel configuration, you can decrease
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kernel compilation time significantly by minimizing the kernel
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configuration as follows:
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yum install qt-devel
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lsmod
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make xconfig &
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- Now compile and install the kernel:
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make && make modules
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mkdir -p /lib/modules/2.6.18-scst && make modules_install && make install
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- Edit the bootloader menu such that the newly compiled kernel is
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loaded by default:
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vi /boot/grub/menu.lst
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- Boot into the new kernel:
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reboot
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