阿里云ECS磁盘在线扩容初体验 有更新!

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环境

  • CentOS 7.4
  • 仅一块系统盘

操作

控制台上扩容

磁盘空间扩容

文件系统扩容

查看云盘大小

# fdisk -l

Disk /dev/vda: 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: 0x0008d73a

   Device Boot      Start         End      Blocks   Id  System
/dev/vda1   *        2048   209715166   104856559+  83  Linux

查看云盘分区大小

# df -h
Filesystem      Size  Used Avail Use% Mounted on
/dev/vda1        40G   30G  8.1G  79% /
devtmpfs        7.8G     0  7.8G   0% /dev

分区扩容

为系统盘的第一个分区扩容。

# yum -y install cloud-utils-growpart
# export LC_ALL=en_US.UTF-8
# growpart /dev/vda 1
CHANGED: partition=1 start=2048 old: size=83881984 end=83884032 new: size=209713119 end=209715167

扩容文件系统

# resize2fs /dev/vda1
resize2fs 1.42.9 (28-Dec-2013)
Filesystem at /dev/vda1 is mounted on /; on-line resizing required
old_desc_blocks = 3, new_desc_blocks = 7
The filesystem on /dev/vda1 is now 26214139 blocks long.

查看云盘分区大小

# df -h
Filesystem      Size  Used Avail Use% Mounted on
/dev/vda1        99G   30G   65G  32% /
devtmpfs        7.8G     0  7.8G   0% /dev
tmpfs           7.8G     0  7.8G   0% /dev/shm

参考

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