[系统运维]解决虚拟机Centos7根目录磁盘已满，扩容

解决虚拟机Centos7根目录磁盘已满，扩容

1.df 命令查看各文件系统的使用情况

2.给虚拟机扩展空间

3.fdisk -l 命令查看磁盘名称

4.新建分区并格式化 命令：fdisk /dev/sda


5.重启机器 reboot

6.格式化新分区，进入LVM

命令：mkfs.ext3 /dev/sda3

[root@localhost ~]# lvm 
lvm> pvcreate /dev/sda3 
WARNING: ext3 signature detected on /dev/sda3 at offset 1080. Wipe it? [y/n]: y
  Wiping ext3 signature on /dev/sda3.
  Physical volume "/dev/sda3" successfully created
lvm> vgextend centos /dev/sda3 
  Volume group "centos" successfully extended
lvm> lvextend -l +71679 /dev/mapper/centos-root 
  Size of logical volume centos/root changed from 16.70 GiB (4276 extents) to <296.70 GiB (75955 extents).
  Logical volume centos/root successfully resized.
lvm> quit 
  Exiting.

[root@localhost ~]# xfs_growfs /dev/mapper/centos-root

7.最后扩容成功