pvcreate /dev/sdb1标签：sdb2lvreducevgreducelvremovevgremovevgscanlvscanvgchangelvdisplaylvsvgsvgdisplay From： https://blog.51cto.com/dayu/5980116
vgcreate test /dev/sdb1
lvcreate -L 1G test
lvcreate -l 20 test
lvextend -L 2G /dev/test/lvol1
vgextend test /dev/sdb2
lvreduce
vgreduce
lvremove
vgremove
vgscan
lvscan
vgchange
lvdisplay
lvs
vgs
vgdisplay
vgexport
vgimport