Clustered Volume Management on Linux UKUUG Spring 2007 Wednesday March 21st 2007 Alasdair Kergon agk@redhat.com

Logical Volume Management

Logical Volume Management

Cluster Infrastructure

CCS – Cluster Configuration System

CMAN – Distributed Cluster Manager

CMAN – Connection Manager

CMAN – Service Manager

I/O Fencing

DLM – Distributed Lock Manager

CLVM

Lock Names

Volume Group Locks

Logical Volume Locks

Logical Volume Lock Modifiers

Locking Types

Single-node locking module

Cluster locking module

clvmd

Metadata – Updating Metadata(1)

Metadata – Updating Metadata(2)

Tagging

Tagging – Object Tags

Tagging – Host Tags

Tagging – Controlling Activation

Tagging – Simple Example

Clustering

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