LVM缩容以及扩容

LVM缩容以及扩容

 需求将home磁盘空间减少  /增加磁盘空间

 

操作系统为centos

1.卸载

umount /dev/mapper/centos-home

2.检查格式

fsck -f /dev/mapper/centos-home

3.缩容磁盘给2G

lvreduce -L 2G /dev/mapper/centos-home

lvdisplay

vgdisplay

4.将空闲的磁盘都给/

lvextend -l +100%FREE /dev/mapper/centos-root

5.识别磁盘

xfs_growfs /dev/mapper/centos-root

6.格式化home磁盘

mkfs.xfs -f /dev/mapper/centos-home

7.挂载磁盘

mount /dev/mapper/centos-home