CentOS 6以下版本支持Ext4-伟大的郭大侠的博客

2013-03-02 16:22:10

CentOS默认是不支持Ext4.所以你需要处理一下才行。

使用环境使用的是CentOS5.8 内核是 2.6.18-238.19.1.el5

其实CentOS 5.8 里面是有 ext4 模块的，只是没加载，所以我们先把模块加入系统

# cd /lib/modules/2.6.18-238.19.1.el5/kernel/fs/ext4 //ext4模块就在此目录下

# [root@linux ext4]# ls

ext4.ko

找到模块后使用modprobe 命令添加

# modprobe ext4 //注意：这里只能写模块名，不能写成 ext4.ko

# lsmod |grep ext4 //添加完后使用lsmod 查看

ext4 285409 0

jbd2 47744 1 ext4

crc16 1027 1 ext4

[root@linux ext4]# yum install e4fsprogs //最后使用yum 安装一下 e4fsprogs

[root@linux ext4]# mkfs.ext4 /dev/sdc //最后创建一个分区来使用ext4 创建文件系统

mke4fs 1.41.12 (17-May-2010)

/dev/sdi is entire device, not just one partition!

Proceed anyway? (y,n) y

Filesystem label=

OS type: Linux

Block size=4096 (log=2)

Fragment size=4096 (log=2)

Stride=0 blocks, Stripe width=0 blocks

61014016 inodes, 244056064 blocks

12202803 blocks (5.00%) reserved for the super user

First data block=0

Maximum filesystem blocks=4294967296

7448 block groups

32768 blocks per group, 32768 fragments per group

8192 inodes per group

Superblock backups stored on blocks:

32768, 98304, 163840, 229376, 294912, 819200, 884736, 1605632, 2654208,

4096000, 7962624, 11239424, 20480000, 23887872, 71663616, 78675968,

102400000, 214990848

Writing inode tables: done

Creating journal (32768 blocks): done

Writing superblocks and filesystem accounting information: done

This filesystem will be automatically checked every 31 mounts or

180 days, whichever comes first. Use tune4fs -c or -i to override.

[root@linux ext4]#mount /dev/sdc /hadoop1