Linux AS2.1 EXT3 File System.
35 天没有关闭机器，需要调整Oracle参数，顺便保养一些硬件。结果关闭Linux系统之后几分钟，重新开启之后一直检查文件系统。信息如下：
Checking filesystems .
/boot : clean , 44/130560 files , 31139/522112 blocks
/dev/sdb1 has gone 212 days without being checked .
Check forced .
/tmp : clean .....
......
http://www.itpub.net/showthread.php?threadid=604570&pagenumber=
使用dmesg 察看Linux系统， 发现没有异常关闭的迹象 。经过网友们的讨论发现是没有使用tune2fs -c or -i 去设置check时间或mounts。 详细的用法可以参考Linux帮助： man tune2fs 。
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mkfs.ext3/dev/md0将RAID分区格式化为ext3格式
结果如下所示：
[root@localhost root]# mkfs.ext3 /dev/md0
mke2fs 1.27 (8-Mar-2002)
Filesystem label=
OS type: Linux
Block size=1024 (log=0)
Fragment size=1024 (log=0)
53040 inodes, 211456 blocks
10572 blocks (5.00%) reserved for the super user
First data block=1
26 block groups
8192 blocks per group, 8192 fragments per group
2040 inodes per group
Superblock backups stored on blocks:
8193, 24577, 40961, 57345, 73729, 204801
raid5: switching cache buffer size, 4096 --> 1024
Writing inode tables: done
Creating journal (4096 blocks): done
Writing superblocks and filesystem accounting information:
done
This filesystem will be automatically checked every 22 mounts or
180 days, whichever comes first. Use tune2fs -c or -i to override.
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