ming l本人親測,通過
操作系統centos 7.5,命令可能隨操作系統的 版本不同而不同,centos 6和7的有些命令是不一樣的。
一 查看分區情況和卷組情況:命令
df -h
[root@controller02 ~]# df -h
Filesystem Size Used Avail Use% Mounted on
/dev/mapper/centos-root 50G 2.1G 48G 5% /
devtmpfs 63G 0 63G 0% /dev
tmpfs 63G 38M 63G 1% /dev/shm
tmpfs 63G 11M 63G 1% /run
tmpfs 63G 0 63G 0% /sys/fs/cgroup
/dev/sda2 1014M 138M 877M 14% /boot
/dev/sda1 200M 12M 189M 6% /boot/efi
/dev/mapper/centos-home 3.3T 33M 3.3T 1% /home
tmpfs 13G 0 13G 0% /run/user/0
vgdisplay
二 xfs分區只能增大,不能縮小。所以刪除一個分區,來增大根分區
umount /home
lvremove /dev/mapper/centos-home
lvextend -L +2000G /dev/mapper/centos-root
xfs_growfs /
# Created by anaconda on Wed Jul 10 10:53:19 2019
#
# Accessible filesystems, by reference, are maintained under '/dev/disk'
# See man pages fstab(5), findfs(8), mount(8) and/or blkid(8) for more info
#
/dev/mapper/centos-root / xfs defaults 0 0
UUID=8f678f31-b6da-429a-bc5d-bca262d7296f /boot xfs defaults 0 0
UUID=31EA-DA37 /boot/efi vfat umask=0077,shortname=winnt 0 0
#/dev/mapper/centos-home /home xfs defaults 0 0
/dev/mapper/centos-swap swap swap defaults 0 0
~