LVM snapshot

An LVM snapshot is a way to create a frozen copy of a storage volume at a specific moment, allowing you to access or back up the data as it was then, even if the original data changes later. Think of it like taking a photograph of a document—you preserve the current state without interrupting ongoing work. Snapshots are useful for backups, data testing, or recovery, as they enable quick access to an earlier version of your data without duplicating the entire volume. They are efficient, saving space by only recording changes made after the snapshot was taken.