RHEL 5.6编译安装3.2.9的内核
就6步了：
1／下载内核3.2.9 kernel.org上去下载，解压到/usr/src:
[root@localhost src]# ls -la total 141172 drwxr-xr-x 6 root root 4096 Mar 11 19:31 . drwxr-xr-x 15 root root 4096 Mar 10 09:55 .. drwxr-xr-x 2 root root 4096 Oct 1 2009 debug drwxr-xr-x 3 root root 4096 Mar 10 09:56 kernels drwxrwxr-x 23 root root 4096 Mar 11 19:27 linux-3.2.9 -rwxrw-rw- 1 root root 78132997 Mar 11 09:48 linux-3.2.9.tar.bz2 drwxr-xr-x 7 root root 4096 Mar 10 09:57 redhat
2／make gconfig，如果没有什么修改就直接保存退出，会在本地生成.config文件，修改一下：
1、
把CONFIG_SYSFS_DEPRECATED 修改为： CONFIG_SYSFS_DEPRECATED=y
或者
2、
通过make menuconfig选中以下对应的选项
General setup -->
[*] enable deprecated sysfs features to support old userspace tools
否则有些系统的新内核无法启动，一般直接的后果就是，新内核启动不了：
RedHat nash Version 5.1.19.6 startingrver(2.6.33.3) 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! [Linux-initrd @ 0x1fc37000,0x228585 bytes]
3／make，会有如下提示：
[root@localhost linux-3.2.9]# make -j4
scripts/kconfig/conf --silentoldconfig Kconfig
warning: (AX88796_93CX6 && RTL8180 && RTL8187 && ADM8211 && RT2400PCI && RT2500PCI && RT61PCI && RT2800PCI && R8187SE) selects EEPROM_93CX6 which has unmet direct dependencies (MISC_DEVICES)
*
* Restart config...
*
*
* General setup
*
Prompt for development and/or incomplete code/drivers (EXPERIMENTAL) [Y/n/?] y
Cross-compiler tool prefix (CROSS_COMPILE) []
Local version - append to kernel release (LOCALVERSION) []
Automatically append version information to the version string (LOCALVERSION_AUTO) [N/y/?] n
Kernel compression mode
> 1. Gzip (KERNEL_GZIP)
2. Bzip2 (KERNEL_BZIP2)
3. LZMA (KERNEL_LZMA)
4. XZ (KERNEL_XZ)
5. LZO (KERNEL_LZO)
choice[1-5?]: 1
Default hostname (DEFAULT_HOSTNAME) [(none)] (none)
Support for paging of anonymous memory (swap) (SWAP) [Y/n/?] y
System V IPC (SYSVIPC) [Y/n/?] y
POSIX Message Queues (POSIX_MQUEUE) [Y/n/?] y
BSD Process Accounting (BSD_PROCESS_ACCT) [Y/n/?] y
BSD Process Accounting version 3 file format (BSD_PROCESS_ACCT_V3) [N/y/?] n
open by fhandle syscalls (FHANDLE) [N/y/?] n
Export task/process statistics through netlink (EXPERIMENTAL) (TASKSTATS) [Y/n/?] y
Enable per-task delay accounting (EXPERIMENTAL) (TASK_DELAY_ACCT) [Y/n/?] y
Enable extended accounting over taskstats (EXPERIMENTAL) (TASK_XACCT) [Y/n/?] y
Enable per-task storage I/O accounting (EXPERIMENTAL) (TASK_IO_ACCOUNTING) [Y/n/?] y
Auditing support (AUDIT) [Y/n/?] y
Enable system-call auditing support (AUDITSYSCALL) [Y/n/?] y
Kernel .config support (IKCONFIG) [N/m/y/?] n
Kernel log buffer size (16 => 64KB, 17 => 128KB) (LOG_BUF_SHIFT) [19] 19
Automatic process group scheduling (SCHED_AUTOGROUP) [N/y/?] n
Enable deprecated sysfs features to support old userspace tools (SYSFS_DEPRECATED) [Y/n/?] y
Enable deprecated sysfs features by default (SYSFS_DEPRECATED_V2) [N/y/?] (NEW)
输入y，开始编译
4／make modules_install，会把lib文件拷贝到/lib/modules下去：
[root@localhost linux-3.2.9]# ls /lib/modules/
2.6.18-238.el5 3.2.9
5／make install
[root@localhost boot]# ls -la total 17660 drwxr-xr-x 3 root root 4096 Mar 11 20:22 . drwxr-xr-x 26 root root 4096 Mar 11 19:21 .. -rw-r--r-- 1 root root 67210 Dec 20 2010 config-2.6.18-238.el5 drwxr-xr-x 2 root root 4096 Mar 11 20:22 grub -rw------- 1 root root 2787124 Mar 10 12:45 initrd-2.6.18-238.el5.img -rw-r--r-- 1 root root 4024934 Mar 10 11:41 initrd-2.6.18-238.el5kdump.img -rw------- 1 root root 2784350 Mar 11 20:22 initrd-3.2.9.img -rw-r--r-- 1 root root 94600 Jul 13 2006 memtest86+-1.65 -rw-r--r-- 1 root root 113923 Dec 20 2010 symvers-2.6.18-238.el5.gz lrwxrwxrwx 1 root root 22 Mar 11 20:22 System.map -> /boot/System.map-3.2.9 -rw-r--r-- 1 root root 1260254 Dec 20 2010 System.map-2.6.18-238.el5 -rw-r--r-- 1 root root 1879493 Mar 11 20:22 System.map-3.2.9 lrwxrwxrwx 1 root root 19 Mar 11 20:22 vmlinuz -> /boot/vmlinuz-3.2.9 -rw-r--r-- 1 root root 2094684 Dec 20 2010 vmlinuz-2.6.18-238.el5 -rw-r--r-- 1 root root 158 Dec 20 2010 .vmlinuz-2.6.18-238.el5.hmac -rw-r--r-- 1 root root 2861840 Mar 11 20:22 vmlinuz-3.2.9 [root@localhost boot]# 生成了vmlinuz-3.2.9 ,initrd-3.2.9.img, System,map-3.2.9
就可以了。
修改启动目录：
1 # grub.conf generated by anaconda 2 # 3 # Note that you do not have to rerun grub after making changes to this file 4 # NOTICE: You do not have a /boot partition. This means that 5 # all kernel and initrd paths are relative to /, eg. 6 # root (hd0,0) 7 # kernel /boot/vmlinuz-version ro root=/dev/sda1 8 # initrd /boot/initrd-version.img 9 #boot=/dev/sda 10 default=0 11 timeout=5 12 splashimage=(hd0,0)/boot/grub/splash.xpm.gz 13 hiddenmenu 14 title Red Hat Enterprise Linux Server (3.2.9) 15 root (hd0,0) 16 kernel /boot/vmlinuz-3.2.9 ro root=LABEL=/ rhgb quiet crashkernel=128M@16M 17 initrd /boot/initrd-3.2.9.img 18 title Red Hat Enterprise Linux Server (2.6.18-238.el5) 19 root (hd0,0) 20 kernel /boot/vmlinuz-2.6.18-238.el5 ro root=LABEL=/ rhgb quiet crashkernel=128M@16M 21 initrd /boot/initrd-2.6.18-238.el5.img
从新的内核启动。