centos7 分区 格式化

1. 查看磁盘

[root@yzb-centos72-3 ~]# fdisk -l



Disk /dev/vda: 32.2 GB, 32212254720 bytes, 62914560 sectors

Units = sectors of 1 * 512 = 512 bytes

Sector size (logical/physical): 512 bytes / 512 bytes

I/O size (minimum/optimal): 512 bytes / 512 bytes

Disk label type: dos

Disk identifier: 0x0009680e



   Device Boot      Start         End      Blocks   Id  System

/dev/vda1            2048     4194303     2096128   82  Linux swap / Solaris

/dev/vda2   *     4194304    56623103    26214400   83  Linux



Disk /dev/vdb: 107.4 GB, 107374182400 bytes, 209715200 sectors

Units = sectors of 1 * 512 = 512 bytes

Sector size (logical/physical): 512 bytes / 512 bytes

I/O size (minimum/optimal): 512 bytes / 512 bytes

 

发现/dev/vdb这块未分区、格式化

2. 分区

[root@yzb-centos72-3 ~]# fdisk /dev/vdb

Welcome to fdisk (util-linux 2.23.2).



Changes will remain in memory only, until you decide to write them.

Be careful before using the write command.



Device does not contain a recognized partition table

Building a new DOS disklabel with disk identifier 0x20ea1593.



Command (m for help): 

输入m 查看

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

   g   create a new empty GPT partition table

   G   create an IRIX (SGI) partition table

   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): 

输入n

Command (m for help): n

Partition type:

   p   primary (0 primary, 0 extended, 4 free)

   e   extended

输入p

Select (default p): p

一路回车默认

Partition number (1-4, default 1): 

First sector (2048-209715199, default 2048): 

Using default value 2048

Last sector, +sectors or +size{K,M,G} (2048-209715199, default 209715199): 

Using default value 209715199

Partition 1 of type Linux and of size 100 GiB is set

输入w

Command (m for help): w

The partition table has been altered!



Calling ioctl() to re-read partition table.

Syncing disks.

 

查看  fdisk -l

已经分好区，但是未格式化

[root@yzb-centos72-3 ~]# fdisk -l



Disk /dev/vda: 32.2 GB, 32212254720 bytes, 62914560 sectors

Units = sectors of 1 * 512 = 512 bytes

Sector size (logical/physical): 512 bytes / 512 bytes

I/O size (minimum/optimal): 512 bytes / 512 bytes

Disk label type: dos

Disk identifier: 0x0009680e



   Device Boot      Start         End      Blocks   Id  System

/dev/vda1            2048     4194303     2096128   82  Linux swap / Solaris

/dev/vda2   *     4194304    56623103    26214400   83  Linux



Disk /dev/vdb: 107.4 GB, 107374182400 bytes, 209715200 sectors

Units = sectors of 1 * 512 = 512 bytes

Sector size (logical/physical): 512 bytes / 512 bytes

I/O size (minimum/optimal): 512 bytes / 512 bytes

Disk label type: dos

Disk identifier: 0x35bf8022



   Device Boot      Start         End      Blocks   Id  System

/dev/vdb1            2048   209715199   104856576   83  Linux

 

3. 格式化  mkfs -t ext3   或者  mkfs.ext3 

[root@yzb-centos72-3 ~]# mkfs -t ext3 /dev/vdb1

mke2fs 1.42.9 (28-Dec-2013)

Filesystem label=

OS type: Linux

Block size=4096 (log=2)

Fragment size=4096 (log=2)

Stride=0 blocks, Stripe width=0 blocks

6553600 inodes, 26214144 blocks

1310707 blocks (5.00%) reserved for the super user

First data block=0

Maximum filesystem blocks=4294967296

800 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



Allocating group tables: done                            

Writing inode tables: done                            

Creating journal (32768 blocks): done

Writing superblocks and filesystem accounting information: done   



[root@yzb-centos72-3 ~]# 

4. 挂载

先在根目录建data

[root@yzb-centos72-3 /]# mkdir data

然后挂载

 mount /dev/vdb1 /data

查看挂载后的目录

[root@yzb-centos72-3 /]# df -Th

Filesystem     Type      Size  Used Avail Use% Mounted on

/dev/vda2      ext4       25G  3.1G   21G  14% /

devtmpfs       devtmpfs  3.9G     0  3.9G   0% /dev

tmpfs          tmpfs     3.9G     0  3.9G   0% /dev/shm

tmpfs          tmpfs     3.9G   57M  3.8G   2% /run

tmpfs          tmpfs     3.9G     0  3.9G   0% /sys/fs/cgroup

tmpfs          tmpfs     783M     0  783M   0% /run/user/0

/dev/vdb1      ext3       99G   60M   94G   1% /data

 

将挂载持久化到文件，开机自动挂载

/etc/fstab

vi /etc/fstab

#

# /etc/fstab

# Created by anaconda on Mon Jan  2 22:58:53 2017

#

# Accessible filesystems, by reference, are maintained under '/dev/disk'

# See man pages fstab(5), findfs(8), mount(8) and/or blkid(8) for more info

#

UUID=381f5199-12a4-4d44-91af-be015a752145 /                       ext4    defaults        1 1

UUID=4b0d629d-79d8-43e3-82bd-8a7b98fcfb75 swap                    swap    defaults        0 0

/dev/vdb1   /data                                              ext3    defaults        1 1