安装growpart工具
[root@web-1 ~]# yum install cloud-utils-growpart
查看磁盘情况
[root@web-1 ~]# lsblk
NAME MAJ:MIN RM SIZE RO TYPE MOUNTPOINT
sr0 11:0 1 470K 0 rom
vda 253:0 0 10G 0 disk
└─vda1 253:1 0 5G 0 part /
使用growpart工具扩容分区
[root@web-1 ~]# growpart /dev/vda 1
unexpected output in sfdisk --version [sfdisk,来自 util-linux 2.23.2]
报错解决
root@web-1 ~]# export LANG=en_US.UTF-8
[root@web-1 ~]# growpart /dev/vda 1
CHANGED: partition=1 start=2048 old: size=10483712 end=10485760 new: size=20969439 end=20971487
使用 xfs_growfs工具扩容文件系统
root@web-1 ~]# xfs_growfs /dev/vda1
meta-data=/dev/vda1 isize=512 agcount=4, agsize=327616 blks
= sectsz=512 attr=2, projid32bit=1
= crc=1 finobt=0 spinodes=0
data = bsize=4096 blocks=1310464, imaxpct=25
= sunit=0 swidth=0 blks
naming =version 2 bsize=4096 ascii-ci=0 ftype=1
log =internal bsize=4096 blocks=2560, version=2
= sectsz=512 sunit=0 blks, lazy-count=1
realtime =none extsz=4096 blocks=0, rtextents=0
data blocks changed from 1310464 to 2621179
验证
root@web-1 ~]# df -h
Filesystem Size Used Avail Use% Mounted on
/dev/vda1 10G 1.4G 8.7G 14% /
devtmpfs 909M 0 909M 0% /dev
tmpfs 920M 0 920M 0% /dev/shm
tmpfs 920M 8.5M 911M 1% /run
tmpfs 920M 0 920M 0% /sys/fs/cgroup
tmpfs 184M 0 184M 0% /run/user/0