block: add sheepdog driver for distributed storage support
Sheepdog is a distributed storage system for QEMU. It provides highly available block level storage volumes to VMs like Amazon EBS. This patch adds a qemu block driver for Sheepdog. Sheepdog features are: - No node in the cluster is special (no metadata node, no control node, etc) - Linear scalability in performance and capacity - No single point of failure - Autonomous management (zero configuration) - Useful volume management support such as snapshot and cloning - Thin provisioning - Autonomous load balancing The more details are available at the project site: http://www.osrg.net/sheepdog/Signed-off-by: NMORITA Kazutaka <morita.kazutaka@lab.ntt.co.jp> Signed-off-by: NKevin Wolf <kwolf@redhat.com>
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block/sheepdog.c
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