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Wednesday, October 15 • 2:30pm - 3:20pm
An Update (and Demo) on Techniques to Manage libvirt/QEMU-Based Virtual Machine Snapshots and Disk Image Chains - Kashyap Chamarthy, Red Hat

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Managing QEMU overlay-based virtual machine snapshots can become cumbersome over a period of time. With each new snapshot, a new QCOW2 overlay file is created -- this can become an overhead of tracking multiple disk image files. Understanding the ability to manage multiple disk image chains efficiently will help lower this overhead.

This talk aims to explore some of the recent improvements in QEMU and libvirt projects that address this need of advanced disk image management. More specifically, we'll discuss -- shortening disk image chains, snapshot merging, live backup of entire disk image chain, gracefully reverting and deleting snapshots. We'll also see how some of these underlying concepts are used in higher-layer projects like OpenStack to create and manage snapshots. This session also includes a demonstration of some the snapshot management techniques discussed.

Speakers
avatar for Kashyap Chamarthy

Kashyap Chamarthy

Senior Software Engineer, Red Hat
Kashyap Chamarthy works at Red Hat, as part of OpenStack Infrastructure engineering group, focusing his contributions on interactions between OpenStack and its underlying Virtualization components (libvirt, QEMU, KVM). In the past, he's presented and participated in the past four European editions of LinuxCon / KVMForum, FOSDEM, and some Fedora Project contributor conferences.


Wednesday October 15, 2014 2:30pm - 3:20pm
Room 15