CentOS 5.X 编译新内核（2.6.32）要注意的配置问题

1.

否则重启报错

insmod: error inserting ‘/lib/dm-region-hash.ko’: –1 File exits

+++++++++++++++++++++++++++++++

1.解压initrd

# cp /boot/initrd-2.6.34.img /tmp

# cd /tmp/

# ls

initrd-2.6.34.img

# mkdir newinitrd

# cd newinitrd/

# zcat ../initrd-2.6.34.img |cpio -i

11537 blocks

# ls

bin dev etc init lib proc sbin sys sysroot

2.编辑init，删掉重复的两行

echo "Loading dm-region-hash.ko module"

insmod /lib/dm-region-hash.ko

echo "Loading dm-region-hash.ko module"

insmod /lib/dm-region-hash.ko

3.重新打包initrd

# find .|cpio -c -o > ../initrd

11538 blocks

# cd ..

# gzip -9 < initrd > initrd-2.6.34.img

# ls

initrd-2.6.34.img initrd newinitrd

initrd-2.6.34.img就是重新打包的initrd了，然后把initrd.img拷贝到/boot，就可以了，再reboot,就不 会有之前的错误了.

将init文件的第二行“setquiet” 去掉，boot时就可以打印出initrd在做什么,功能类似于 sh –x init

这个应该是某个地方配置的有问题,所以才出现了重复加载的问题,没时间去细究原因,代价是每次make install后都需要按照上面的步骤修改initrd.img

2.

[root@localhost~]#cp ../kernels/2.6.18-128.e15-i686/.config /usr/src
★    编辑配置文件.config

[root@localhost~]#vim .config

找到105行的"#CONFIG_SYSFS_DEPRECATED is not set"改为"CONFIG_SYSFS_DEPRECATED=y" 保存
假如不修改该行，在升级重新启动后会报如下的错，导致启动失败

Volume group "VolGroup00" not found

Unalbe to access resume device (/dev/VolGroup00/LogVol00)

mount: could not find filesystem '/dev/root'

setuproot:moving /dev failed: No such file or directory

setuproot:error mounting /proc: No such file or directory

setuproot:error mounting /sys: No such file or directory

switchroot: mount failed: No such file or directory

Kernel panic - not syncing:Attempted to kill init!