亚马逊EC2根硬盘空间扩容

买的系统盘为32G，结果发现只使用了8G，剩下的都未分配

 

lsblk 
NAME    MAJ:MIN RM  SIZE RO TYPE MOUNTPOINT
xvda    202:0    0   32G  0 disk 
└─xvda1 202:1    0    8G  0 part /

fdisk -u /dev/xvda
Command (m for help): p

Disk /dev/xvda: 34.4 GB, 34359738368 bytes, 67108864 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: 0x000998ac

    Device Boot      Start         End      Blocks   Id  System
/dev/xvda1   *        2048    16777215     8387584   83  Linux

Command (m for help): d
Selected partition 1
Partition 1 is deleted

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): 1
First sector (2048-67108863, default 2048): 
Using default value 2048
Last sector, +sectors or +size{K,M,G} (2048-67108863, default 67108863): 
Using default value 67108863
Partition 1 of type Linux and of size 32 GiB is set

Command (m for help): p

Disk /dev/xvda: 34.4 GB, 34359738368 bytes, 67108864 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: 0x000998ac

    Device Boot      Start         End      Blocks   Id  System
/dev/xvda1            2048    67108863    33553408   83  Linux
Command (m for help): w
The partition table has been altered!

reboot


lsblk 
NAME    MAJ:MIN RM  SIZE RO TYPE MOUNTPOINT
xvda    202:0    0   32G  0 disk 
└─xvda1 202:1    0   32G  0 part /

df -h
Filesystem      Size  Used Avail Use% Mounted on
/dev/xvda1      8.0G  1.3G  6.8G  16% /

ext格式调整大小
resize2fs /dev/xvda1
xfs格式调整大小
xfs_growfs /dev/xvda1


df -h
Filesystem      Size  Used Avail Use% Mounted on
/dev/xvda1       32G  1.3G   31G   4% /

到此扩容完毕