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Logical Volume Management FUDCON2 Friday 24th June 2005 Alasdair Kergon agk@redhat.com

Logical Volume Management

Advantages of LVM

What is Device Mapper?

Userspace Architecture

Device Mapper Kernel Architecture

Mapped Devices

Mirror – pvmove

Mirror – pvmove – Before

Mirror – pvmove – After

Mirror – pvmove - During

LVM2 Design Goals: Learn from LVM1

Some LVM commands

LVM2 Tool Enhancements (1)

LVM2 Tool Enhancements (2)

LVM2 Tool Enhancements (3)

LVM2 Tool Enhancements (4)

Metadata (2)

Text Metadata Format (1)

Text Metadata Format (2)

vgreduce --removemissing

Reporting – pvs, lvs, vgs

Reporting – pvs, lvs, vgs(2)

Configuration files

Tagging – Object Tags

Tagging – Host Tags

Tagging – Controlling Activation

Tagging – Simple Example

segment types

cryptsetup Example

cryptsetup-luks

cryptsetup-luks Examples

Future Work