Device Mapper Concepts: Difference between revisions
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Device Mapper is a kernel-based framework for volume management. It maps [[Linux 7 Storage Concepts#Block_Devices|physical block devices]] onto higher level '''virtual block devices'''. Device mapper also offers file system snapshots and thin provisioning. | Device Mapper is a kernel-based framework for volume management. It maps [[Linux 7 Storage Concepts#Block_Devices|physical block devices]] onto higher level '''virtual block devices'''. Device mapper also offers file system snapshots and thin provisioning. | ||
The device mapper framework is the foundation of [[Linux_Logical_Volume_Management_Concepts|logical volume manager (LVM)]], software | The device mapper framework is the foundation of [[Linux_Logical_Volume_Management_Concepts|logical volume manager (LVM)]], software [[RAID_Concepts|RAID]]s, dm-crypt disk encryption and [[Docker device-mapper Storage Backend#Overview|Docker device-mapper storage backend]] | ||
Revision as of 18:54, 15 December 2018
Internal
Overview
Device Mapper is a kernel-based framework for volume management. It maps physical block devices onto higher level virtual block devices. Device mapper also offers file system snapshots and thin provisioning. The device mapper framework is the foundation of logical volume manager (LVM), software RAIDs, dm-crypt disk encryption and Docker device-mapper storage backend