CentOS ext4 磁盘分区格式化挂载

[root@appserver ~]# df -h /*查看现有分区情况*/
文件系统容量已用可用已用%% 挂载点
/dev/vda1 9.9G 8.2G 1.2G 88% /
tmpfs 3.9G 100K 3.9G 1% /dev/shm
/dev/sr0 368K 368K 0 100% /media/CDROM
[root@appserver ~]# fdisk -l /*查看现有DISK*/
Disk /dev/vda: 10.7 GB, 10737418240 bytes
255 heads, 63 sectors/track, 1305 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
Sector size （logical/physical）: 512 bytes / 512 bytes
I/O size （minimum/optimal）: 512 bytes / 512 bytes
Disk identifier: 0x0003e85fDevice Boot Start End Blocks Id System
/dev/vda1 * 1 1306 10484736 83 LinuxDisk /dev/vdb: 214.7 GB, 214748364800 bytes
16 heads, 63 sectors/track, 416101 cylinders
Units = cylinders of 1008 * 512 = 516096 bytes
Sector size （logical/physical）: 512 bytes / 512 bytes
I/O size （minimum/optimal）: 512 bytes / 512 bytes
Disk identifier: 0x00000000[root@appserver ~]# fdisk /dev/vdb /*用fdisk分区工具对磁盘分区*/
Device contains neither a valid DOS partition table, nor Sun, SGI or OSF disklabel
Building a new DOS disklabel with disk identifier 0x264c68f0.
Changes will remain in memory only, until you decide to write them.
After that, of course, the previous content won"t be recoverable.Warning: invalid flag 0x0000 of partition table 4 will be corrected by w（rite）WARNING: DOS-compatible mode is deprecated. It"s strongly recommended to
switch off the mode （command "c"） and change display units to
sectors （command "u"）.Command （m for help）: m
Command action
a toggle a bootable flag
b edit bsd disklabel
c toggle the dos compatibility flag
d delete a partition
l list known partition types
m print this menu
n add a new partition
o create a new empty DOS partition table
p print the partition table
q quit without saving changes
s create a new empty Sun disklabel
t change a partition"s system id
u change display/entry units
v verify the partition table
w write table to disk and exit
x extra functionality （experts only）Command （m for help）: n
Command action
e extended
p primary partition （1-4）
e
Partition number （1-4）: 1
First cylinder （1-416101, default 1）:
Using default value 1
Last cylinder, +cylinders or +size{K,M,G} （1-416101, default 416101）:
Using default value 416101Command （m for help）: w
The partition table has been altered！Calling ioctl（） to re-read partition table.
Syncing disks.
[root@appserver ~]# fdisk -lDisk /dev/vda: 10.7 GB, 10737418240 bytes
255 heads, 63 sectors/track, 1305 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
Sector size （logical/physical）: 512 bytes / 512 bytes
I/O size （minimum/optimal）: 512 bytes / 512 bytes
Disk identifier: 0x0003e85fDevice Boot Start End Blocks Id System
/dev/vda1 * 1 1306 10484736 83 LinuxDisk /dev/vdb: 214.7 GB, 214748364800 bytes
16 heads, 63 sectors/track, 416101 cylinders
Units = cylinders of 1008 * 512 = 516096 bytes
Sector size （logical/physical）: 512 bytes / 512 bytes
I/O size （minimum/optimal）: 512 bytes / 512 bytes
Disk identifier: 0x264c68f0Device Boot Start End Blocks Id System
/dev/vdb1 1 416101 209714872+ 5 Extended

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