擴容磁盤大小

cat>/root/non.txt<<EOF
n
p
3

Z
w
q
EOF
fdisk /dev/vda </root/non.txt
partprobe /dev/vda
pvcreate /dev/vda3
vgextend centos /dev/vda3
lvextend /dev/mapper/centos-root -l +100%free
xfs_growfs /dev/mapper/centos-root
df -H

 

1、查看分區

2、備份/home/分區

3、卸載分區

umount /home

fuser -km /home

4、刪除/home所在的LV

lvremove /dev/mapper/centos-home

5、擴展/root所在的LV

lvextend -L +100G /dev/mapper/centos-root

6、擴展/root文件系統

xfs_growfs /dev/mapper/centos-root

7、重新創建/home lv

lvcreate -L 41G -n /dev/mapper/centos-home

8、創建文件系統

mkfs.xfs /dev/mapper/centos-home

9、掛載/home

mount /dev/mapper/centos-home

10、文件恢復

11、查看磁盤大小

df -H