To start the Logical Volume Manager interactive shell

$ lvm

lvm> 

To view the config

$ sudo lvm config

To display the recognised built-in block device types

$ sudo lvm devtypes

To view the dumpconfig

$ sudo lvm dumpconfig

To display recognised metadata formats

$ lvm

> formats

To display information about PVs, PV segments, VGs, LVs and LV segments, all at once

$ sudo lvm fullreport

To print help options

$ sudo lvm help

To display log report of last command run in LVM shell if command log reporting is enabled

$ sudo lvm lastlog