为什么不能直接分区创建文件系统
os:rhel 5.6
[root@linux1 etc]# df -h
文件系统 容量 已用 可用 已用% 挂载点
/dev/mapper/ddf1_4c53492020202020808627c3000000004711471100001450p1
20G 2.4G 17G 13% /
tmpfs 2.0G 0 2.0G 0% /dev/shm
[root@linux1 etc]# fdisk -l
Disk /dev/sda: 500.1 GB, 500107862016 bytes
255 heads, 63 sectors/track, 60801 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
Device Boot Start End Blocks Id System
/dev/sda1 * 1 2611 20972826 83 Linux
/dev/sda2 2612 3110 4008217+ 83 Linux
/dev/sda3 3111 4356 10008495 83 Linux
[root@linux1 etc]# mkfs -t ext2 /dev/sda3
mke2fs 1.39 (29-May-2006)
/dev/sda3 is apparently in use by the system; will not make a filesystem here!
[root@linux1 etc]# more /etc/fstab
LABEL=/ / ext3 defaults 1 1
tmpfs /dev/shm tmpfs defaults 0 0
devpts /dev/pts devpts gid=5,mode=620 0 0
sysfs /sys sysfs defaults 0 0
proc /proc proc defaults 0
问题:
为什么对/dev/sda3直接创建文件系统报错,系统是刚装的,刚分地区.