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Sheepdog is a distributed storage system for QEMU. It provides highly available block level storage volumes that can be attached to QEMU-based virtual machines. Sheepdog scales to several hundreds nodes, and supports advanced volume management features such as snapshot, cloning, and thin provisioning.

Enjoy!

User Guide

• Getting Started
• Cluster Management Backends
• Backend Stores and Object Cache
• Sheepfs
• General Protocol Support
• Migration from v0.3.0 (simple) to v0.4.0 (farm) - the right way?

Release Plan

The latest pulished version is the v0.3.0.

• 0.4.0 is due to the end of june 2012, with:

  • a new store driver 'farm' (done)
  • en object cache support (done)
  • a tracer support (done)
  • support for variable virtual nodes (done)
  • start sheep daemon as gateway (done)
  • support larger object size
  • use differential copy for fast object recovery
  • add hierarchical zones support
  • reclaim unused objects automatically
  • more doc
  • more tests

• 1.0.0 is expected for the end of the year

Developer Guide

• Sheepdog Design

• Submit a Patch

• Google Summer of Code 2012

External Articles

• Setting up a Sheepdog cluster and exporting a volume to a KVM guest -- Daniel P. Berrangé (2011-10-11)