Derwynd's Weblog

Building modules for rhel5 kernel

Build modules for kernel instead of building the whole kernel

Download the kernel rpm
$ rpm -ivh kernel-2.6.18-x.x.x.el5.src.rpm
$ cd /usr/src/redhat/SPECS/
$ rpmbuild -bp kernel-2.6.spec

will take some time but less than rebuilding the entire kernel hopefully
$ cd /usr/src/redhat/BUILD/kernel-2.6.18/linux-2.6.18.x86_64
$ cp /boot/config-2.6.18-x.x.x.el5 .config
$ make menuconfig

Here for examplepurpose i’m taking xfs and reiserfs module hopefully it works with whatever you chose
* For xfs/reiserfs make sure to chose xfs and reiserfs as the module
$ make fs/xfs/xfs.ko
In case of error run
$ make SUBDIRS=fs/xfs/ modules
and rerun
$ make fs/xfs/xfs.ko
$ mkdir -p /lib/modules/`uname -r`/kernel/fs/xfs
Copy the module into the /lib/modules/`uname -r`/kernel/fs/xfs
$ cp fs/xfs/xfs.ko /lib/modules/`uname -r`/kernel/fs/xfs
$ make fs/reiserfs/reiserfs.ko
In case of error run
$ make SUBDIRS=fs/reiserfs/ modules
and rerun
$ make fs/reiserfs/reiserfs.ko
$ mkdir -p /lib/modules/`uname -r`/kernel/fs/reiserfs
Copy the module into the /lib/modules/`uname -r`/kernel/fs/reiserfs
$ cp fs/reiserfs/reiserfs.ko /lib/modules/`uname -r`/kernel/fs/reiserfs

Change permissions
$ chmod 744 /lib/modules/`uname -r`/kernel/fs/reiserfs/reiserfs.ko
$ chmod 744 /lib/modules/`uname -r`/kernel/fs/xfs/xfs.ko

insmod the required module
$ insmod /lib/modules/`uname -r`/kernel/fs/reiserfs/reiserfs.ko
$ insmod /lib/modules/`uname -r`/kernel/fs/xfs/xfs.ko
Make entry into /etc/modules.conf
$ echo “install reiserfs /sbin/insmod /lib/modules/2.6.18-x.x.x.el5/kernel/fs/reiserfs/reiserfs.ko ” >> /etc/modules.conf
$ echo “install xfs /sbin/insmod /lib/modules/2.6.18-x.x.x.el5/kernel/fs/xfs/xfs.ko ” >> /etc/modules.conf

$ modprobe reiserfs
$ modprobe xfs
$ depmod -a
Should be done hopefully

January 14, 2010 - Posted by derwynd | Uncategorized