RedHat Device mapper (kernel part of LVM2 volume management)
Device mapper (kernel part of LVM2 volume management) Milan Brož [email protected] Device mapper ...  modular Linux 2.6 kernel driver  framework for constructing new block devices and mapping them to existing block devices  managed through API (IOCTL interface)  libdevmapper, dmsetup command utility DM knows nothing about ◠LVM (logical volumes, volume groups) ► managed by userspace tools (LVM2
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DRBD:What is DRBD
Linux Kernel Documentation :: device-mapper : snapshot.txt
Bitbucket
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