本博客是简略版说明，
请参考阿里云官方的说明文档
https://help.aliyun.com/document_detail/111738.html?spm=a2c4g.11186623.6.810.1e6d1b25xkjwth
条件：
- 满足内核至少3.6.0
- centos 7
yum install -y cloud-utils-growpart
yum install -y xfsprogs
growpart /dev/vda 1
#ext*文件系统（例如ext3和ext4
resize2fs /dev/vda1
#xfs文件系统：运行xfs_growfs <mountpoint>命令
#xfs_growfs /
详情参考阿里云官方的说明文档
https://help.aliyun.com/document_detail/111738.html?spm=a2c4g.11186623.6.810.1e6d1b25xkjwth