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Thursday, August 20 • 2:00pm - 2:30pm
Incremental backups: Good things come in small packages! - John Snow & Vladimir Sementsov-Ogievskiy

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Full backups of large storage devices are expensive, slow, and waste a lot of space needlessly by copying sectors that have not changed over and over again. Incremental and differential backups are an oft requested feature in QEMU, and will help eliminate the redundant copying of backup data. This presentation will cover recent developments in related delta-backup technologies, covering incremental and differential backups, image fleecing, and dirty bitmap management. We will highlight how these features are accomplished using modifications to existing QMP primitives such as the 'drive-backup' and 'transaction' commands to unlock rich functionality within our existing APIs.


Vladimir Sementsov-Ogievskiy

Vladimir Sementsov-Ogievskiy is a postgraduate student of Moscow | Institute of Physics and Technology. He have received a master's degree | at Applied Mathematics and Physics in 2014 in the same institute, with | scientific work about virtual machine testing. Now he deals with virtual | machine backup for Qemu and Virtuozzo (Parallels Cloud Server). Vladimir | works for two years in Paralles (now Odin) as a Jr. software developer. | Vladimir... Read More →
avatar for John Snow

John Snow

Software Engineer, Red Hat
John Snow is a UMass Lowell Alumni and (increasingly non-recently) a recent hire for Red Hat. He works for the virtualization team as a Software Engineer and has worked on the AHCI emulator, legacy IDE and FDC support, and gave a talk at KVM Forum 2015 on QEMU's new incremental backup features.

Thursday August 20, 2015 2:00pm - 2:30pm
Cedar Room

Attendees (13)