Scan for logical volumes
The lvscan command scans all LVM logical volumes in the system and displays them along with their device files.
lvscan [OPTION]...
-b:Show the major and minor device numbers of the logical volumes.
Scan for all logical volumes in the system:
[root@localhost ~]# lvscan
Example output:
ACTIVE '/dev/vg1000/lvol0' [200.00 MB] inherit