Logical Domains

LDoms Overview

Logical Domains, or LDoms, technology allows a user to allocate a system's various resources, such as CPU, memory, and IO into logical groupings or domains. This enables one to create multiple discrete systems, each with their own operating system, resources, and identity within a single physical computer system.  The official product name is Oracle VM Server for SPARC.

Getting Started

• Oracle's LDoms site
• BigAdmin Site for LDoms
• Sun BluePrints LDoms Quick Start Guide

Current Release Documentation

• Oracle VM Server for SPARC 2.1 Admin Guide (pdf) (html) Latest
• Oracle VM Server for SPARC 2.1 Release Notes (pdf) (html) Latest
• Oracle VM Server for SPARC 2.1 Reference Guide (pdf) (html) Latest

Prior Releases Documentation

• Oracle VM Server for SPARC 2.0 Admin Guide (pdf) (html) Latest
• Oracle VM Server for SPARC 2.0 Release Notes (pdf) (html) Latest
• Oracle VM Server for SPARC 2.0 Reference Guide (pdf) (html) Latest
• LDoms 1.3 Admin Guide (pdf) (html)
• LDoms 1.3 Release Notes (pdf) (html)
• LDoms 1.3 Reference Manual (pdf) (html)
• Older LDoms Release Documentation Site
• UltraSPARC T1 Documentation Site
• UltraSPARC T2 Documentation Site
• UltraSPARC Hypervisor API (pdf)

Get the Software

• The Oracle VM Server for SPARC software and required firmware downloads can be found here .
• If you are running S11 Express, all you need do is run 'pfexec pkg install ldomsmanager' to install the 2.0 release. For the Oracle VM Server for SPARC 2.1 release and above, use the above link.
• Source Code for the LDM Manager 1.3 can be found at the LDoms Manager Project site.

Discussions

• Join the OpenSolaris LDoms Discussion
• Join the Oracle OVM Server for SPARC Forum

Wikis

• Logical Domains Wiki
• Logical Domains Community Cookbook Wiki
• Solaris Cluster Wiki on LDoms Support Wiki

Reviews

• T5120/T5220 Review, by Octave Orgeron (PDF)
• The SPARC Enterprise T5140/T5240 and Virtualization, By Octave Orgeron (PDF)

Technical Papers

• An Introduction to Logical Domains, Part 1 - By Octave Orgeron (Reprinted from ;login: The Magazine of USENIX, vol. 32, no. 4 (Berkeley, CA: USENIX Association, [2007]), pg. 20-24. (PDF)
• An Introduction to Logical Domains, Part 2 - By Octave Orgeron (Reprinted from ;login: The Magazine of USENIX, vol. 32, no. 5 (Berkeley, CA: USENIX Association, [2007]), pg. 26-34. (PDF)
• An Introduction to Logical Domains, Part 3 - By Octave Orgeron (Reprinted from ;login: The Magazine of USENIX, vol. 33, no. 1 (Berkeley, CA: USENIX Association, [2008]), pg. 39-47. (PDF)
• An Introduction to Logical Domains, Part 4 - By Octave Orgeron (Reprinted from ;login: The Magazine of USENIX, vol. 33, no. 2 (Berkeley, CA: USENIX Association, [2008]), pg. 24-33. (PDF)
• Sun BluePrints, Sun Server Virtualization Technology, by Jeff Savit (HTML)
• Sun BluePrints, Solaris Operating System Hardware Virtualization Product Architecture, by Chien-Hua Yen (PDF)
• Sun BluePrints, Using Logical Domains and CoolThreads Technology: Improving Scalability and System Utilization, by Ning Sun and Lee Anne Simmons (PDF)
• Sun BluePrints, LDOMS I/O Best Practices: Data Reliability with Logical Domains, by Peter A. Wilson (PDF)
• Sun BluePrints, LDOMS I/O Best Practices: Network Availability with Logical Domains, by Peter A. Wilson (PDF)
• Sun BluePrints LDoms 1.0 Beginner's Guide
• LDoms Community Cookbook - Tasty Recipes for Sun Logical Domains (Wiki Page)
• Deploying Sugar CRM on Sun Logical Domains for Increased Scalability (PDF)

Presentations

• Presentation by Eric Sharakan to NEOSUG, Sep 11, 2007. (PDF)
• Presentation by Liam Merwick to IEOSUG and LOSUG , Sep/Oct, 2007. (PDF)
• LDoms introduction by Nick Kloski. (video)
• Oracle VM Server for SPARC: Enabling a Flexible and Efficient IT Infrastructure, by John Falkenthal, Honglin Su, and Octave Orgeron, presented at Oracle OpenWorld 2010. (PPT) New!
• Industry View: Oracle VM Server for SPARC 2.0, by Octave Orgeron, presented at Oracle OpenWorld 2010. (PDF) New!

Blog Entries

• Introduction to LDom's
• LDom Installation
• Configuring the Control Domain
• Time to Build a Guest Domain