What can you check using lv in linux?

Linux uses lv to view detailed information of LVM volume groups and logical volumes. The "lv" command is a tool for LVM under the Linux system. LVM is a disk management technology that can abstract multiple physical disks. It becomes a unified logical storage space, and volume groups, logical volumes, etc. are created on this logical storage space.

The operating system of this tutorial: Linux5.18.14 system, LVM version 1.0.5, Dell G3 computer.

The "lv" command is a tool of LVM (Logical Volume Manager) under Linux system, used to view the detailed information of LVM volume group (Logical Volume Group) and logical volume (Logical Volume).

LVM is a disk management technology that can abstract multiple physical disks into a unified logical storage space, and create volume groups, logical volumes, etc. on this logical storage space. Using LVM to manage logical volumes can dynamically change the volume group size and logical volume size, thus avoiding the capacity limitation problem caused by simply using traditional hard disk partitioning methods.

Using the `lv display [LOGICAL_VOLUMN]` or `lvscan` command, you can view the existing logical volumes (lvm logical volumes) in LVM, which will include each logical volume. Details such as the volume's name, size, path, status, etc. At the same time, the `lv` command also provides some other options, which play a certain role in the LVM management process, such as:

• `lvcreate`: used to create a new logical volume.

• `lvextend`: used to extend the specified logical volume size.

• `lvreduce`: used to reduce the size of the specified logical volume.

• `lvremove`: used to delete the specified logical volume.

In short, the `lv` command is an important command in the LVM management tool. It can be used to view logical volume information, which facilitates users to understand the system storage situation and perform some management operations.

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