阿里云服务器安装后-挂载数据云盘

01/11/2016

1.查看分区挂载状态

tianyangtax@iZ25tc8mln7Z:~$ df -lh
Filesystem      Size  Used Avail Use% Mounted on
udev            3.9G  4.0K  3.9G   1% /dev
tmpfs           799M  392K  799M   1% /run
/dev/xvda1       20G  2.0G   17G  11% /
none            4.0K     0  4.0K   0% /sys/fs/cgroup
none            5.0M     0  5.0M   0% /run/lock
none            3.9G     0  3.9G   0% /run/shm
none            100M     0  100M   0% /run/user

2.查看硬盘状态

tianyangtax@iZ25tc8mln7Z:/$ sudo fdisk -l

Disk /dev/xvda: 21.5 GB, 21474836480 bytes
255 heads, 63 sectors/track, 2610 cylinders, total 41943040 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 identifier: 0x000da36d

    Device Boot      Start         End      Blocks   Id  System
/dev/xvda1   *        2048    41940991    20969472   83  Linux

Disk /dev/xvdb: 214.7 GB, 214748364800 bytes
255 heads, 63 sectors/track, 26108 cylinders, total 419430400 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 identifier: 0x00000000

Disk /dev/xvdb doesn't contain a valid partition table

3.硬盘分区

tianyangtax@iZ25tc8mln7Z:/$ sudo fdisk /dev/xvdb
Device contains neither a valid DOS partition table, nor Sun, SGI or OSF disklabel
Building a new DOS disklabel with disk identifier 0x5c4c4e94.
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)

Command (m for help): n
Partition type:
   p   primary (0 primary, 0 extended, 4 free)
   e   extended
Select (default p): p
Partition number (1-4, default 1): 
First sector (2048-419430399, default 2048): 
Last sector, +sectors or +size{K,M,G} (2048-419430399, default 419430399): 
Using default value 419430399

Command (m for help): wq
The partition table has been altered!

Calling ioctl() to re-read partition table.
Syncing disks.

4.重新查看硬盘状态,可以发现 /dev/xvdb1 分区已经建立

tianyangtax@iZ25tc8mln7Z:/$ sudo fdisk -l

Disk /dev/xvda: 21.5 GB, 21474836480 bytes
255 heads, 63 sectors/track, 2610 cylinders, total 41943040 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 identifier: 0x000da36d

    Device Boot      Start         End      Blocks   Id  System
/dev/xvda1   *        2048    41940991    20969472   83  Linux

Disk /dev/xvdb: 214.7 GB, 214748364800 bytes
86 heads, 25 sectors/track, 195083 cylinders, total 419430400 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 identifier: 0x5c4c4e94

    Device Boot      Start         End      Blocks   Id  System
/dev/xvdb1            2048   419430399   209714176   83  Linux

5.格式化分区

tianyangtax@iZ25tc8mln7Z:/$ sudo mkfs.ext4 /dev/xvdb1
mke2fs 1.42.9 (4-Feb-2014)
Filesystem label=
OS type: Linux
Block size=4096 (log=2)
Fragment size=4096 (log=2)
Stride=0 blocks, Stripe width=0 blocks
13107200 inodes, 52428544 blocks
2621427 blocks (5.00%) reserved for the super user
First data block=0
Maximum filesystem blocks=4294967296
1600 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 

6.查看分区UUID

tianyangtax@iZ25tc8mln7Z:/$ sudo blkid
/dev/xvda1: UUID="af414ad8-9936-46cd-b074-528854656fcd" TYPE="ext4" 
/dev/xvdb1: UUID="4d1d7add-8b92-4eb9-9c18-d81ef2b339d7" TYPE="ext4" 

7.编辑 /etc/fstab 挂载数据分区至 /mnt

tianyangtax@iZ25tc8mln7Z:/$ sudo vim /etc/fstab
tianyangtax@iZ25tc8mln7Z:/$ sudo cat /etc/fstab
# /etc/fstab: static file system information.
#
# Use 'blkid' to print the universally unique identifier for a
# device; this may be used with UUID= as a more robust way to name devices
# that works even if disks are added and removed. See fstab(5).
#
#                
UUID=af414ad8-9936-46cd-b074-528854656fcd / ext4 errors=remount-ro 0 1

# /mnt was on /dev/xvdb1 by royakon at 2016-01-11 20:43
UUID=4d1d7add-8b92-4eb9-9c18-d81ef2b339d7 /mnt ext4 defaults 0 0

8.重启后重新查看分区状态,可见数据云盘挂载成功.

tianyangtax@iZ25tc8mln7Z:~$ df -lh
Filesystem      Size  Used Avail Use% Mounted on
udev            3.9G  4.0K  3.9G   1% /dev
tmpfs           799M  392K  799M   1% /run
/dev/xvda1       20G  2.0G   17G  11% /
none            4.0K     0  4.0K   0% /sys/fs/cgroup
none            5.0M     0  5.0M   0% /run/lock
none            3.9G     0  3.9G   0% /run/shm
none            100M     0  100M   0% /run/user
/dev/xvdb1      197G   60M  187G   1% /mnt