【转】CentOS 7扩展ROOT分区大小
CentOS 7扩展ROOT分区大小
![](https://pic4.zhimg.com/80/v2-1e3a3634843ab90e93adc0b478661bcf_720w.jpg)
查看新增加的磁盘信息
# fdisk -l
![](https://pic3.zhimg.com/80/v2-7f4ea3c3e7eccbb12899349f1dfa0c22_720w.jpg)
根据以上信息,对新增加的磁盘进行分区
# fdisk /dev/vdb
![](https://pic1.zhimg.com/80/v2-c5a196b0140e5052c762a8cd42a146d4_720w.jpg)
![](https://pic4.zhimg.com/80/v2-7d138db7eae4fb7fd5f6ac280726c1af_720w.jpg)
创建物理卷
# pvcreate /dev/vdb1
![](https://pic3.zhimg.com/80/v2-15449fd61c7e6d9ae8f1ef46608c870e_720w.jpg)
查看物理卷信息
# pvdisplay
![](https://pic4.zhimg.com/80/v2-cf484d52d07d3aaad03d7535abb65747_720w.jpg)
# vgdisplay
![](https://pic4.zhimg.com/80/v2-51f550568bea48c287f1ea433e0cbc97_720w.jpg)
将新增加的分区/dev/vdb1加入到根目录分区centos中
# vgextend centos /dev/vdb1
![](https://pic2.zhimg.com/80/v2-88f6665f8b07bc8557c62c46a2e7ec35_720w.jpg)
重新查看卷组信息
# vgdisplay
![](https://pic1.zhimg.com/80/v2-94a2d8bfa42c354193cfa4d7598ed198_720w.jpg)
进行卷扩容
# lvextend -l +100%FREE /dev/mapper/centos-root
![](https://pic2.zhimg.com/80/v2-a0710366e8cc30c45b36818fd39c7cfd_720w.jpg)
调整卷分区大小
# xfs_growfs /dev/mapper/centos-root
![](https://pic1.zhimg.com/80/v2-bc476657a301692e8e1575a1b497d1ec_720w.jpg)
最后,查看磁盘信息可以看出根目录分区大小已成功扩容
# df -h
![](https://pic1.zhimg.com/80/v2-89626f91a106e9beec50eaa55c428888_720w.jpg)