步骤：umount —-> lvremove lv名称 —–> vgremove vg名称 —–> pvremove pv名称

1、卸载

[root@localhost ~]# umount /date

2、删除lv

[root@localhost ~]# lvremove /dev/VG0/LV0
 Do you really want to remove active logical volume VG0/LV0? [y/n]: y
 Logical volume "LV0" successfully removed

3、删除vg

[root@localhost ~]# vgremove VG0
 Volume group "VG0" successfully removed

4、删除pv

[root@localhost ~]# pvremove /dev/sdb{1..3}
 Labels on physical volume "/dev/sdb1" successfully wiped.
 Labels on physical volume "/dev/sdb2" successfully wiped.
 Labels on physical volume "/dev/sdb3" successfully wiped.