虚拟机vmware 下Centos 系统磁盘扩容

操作步骤

先在VMware 管理界面扩充磁盘容量， 启动系统

查看当前磁盘/dev/sda3已经占用90% 新扩充的磁盘还没生效

[root@localhost ~]# fdisk /dev/sda

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.

 

Command (m for help): d               # 删除分区，记住千万不要保存，不要使用 w 命令

Partition number (1-3, default 3): 3 我要扩容的是根分区， 根分区在/dev/sda3 所以这里选的3

Partition 3 is deleted

 

Command (m for help): n  #新建一个分区

Partition type:

p primary (2 primary, 0 extended, 2 free)

e extended

Select (default p): p # 选择主分区，e 代表扩展分区

Using default response p

Partition number (3,4, default 3):  # 默认敲击回车

First sector (4810752-104857599, default 4810752): # 默认敲击回车

Using default value 4810752

Last sector, +sectors or +size{K,M,G} (4810752-104857599, default 104857599):

Using default value 104857599

Partition 3 of type Linux and of size 47.7 GiB is set

 

Command (m for help): p

 

Disk /dev/sda: 53.7 GB, 53687091200 bytes, 104857600 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: 0x000be86f

 

Device Boot Start End Blocks Id System

/dev/sda1 * 2048 616447 307200 83 Linux

/dev/sda2 616448 4810751 2097152 82 Linux swap / Solaris

/dev/sda3 4810752 104857599 50023424 83 Linux

 

Command (m for help): w   # 保存刚才创建的新分区

分区创建完成，

lsblk 发现分区并没有变化 执行下面两条命令

[root@localhost ~]# partprobe # 如果无效请重启

[root@localhost ~]# xfs_growfs /dev/sda1 # xfs 同步文件系统

[root@localhost ~]# df -h ##扩容成功，查看原来数据都在

Filesystem Size Used Avail Use% Mounted on

devtmpfs 895M 0 895M 0% /dev

tmpfs 910M 0 910M 0% /dev/shm

tmpfs 910M 11M 900M 2% /run

tmpfs 910M 0 910M 0% /sys/fs/cgroup

/dev/sda3 48G 16G 32G 34% /