(Short for Manager (Logical Volume Manager), which provides a higher level of disk storage management capabilities for the host. LVM can help system administrators to easily allocate storage space for use and users. Logical volumes managed by LVM can be resized or added and removed as needed. Additionally, LVM can provide custom named identities for managed logical volumes. Therefore, the use of LVM is mainly to facilitate the management of the storage system and increase the expansion of the system)