London Ceph Day: Erasure Coding: Purpose and Progress

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Loic Dachary, Senior Developer, CloudWatt

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Erasure Code in Ceph

Save Space

XOR

3 peta => 1.3 peta

Harder object mutations / recovery

Simple operations and tiering

Replicated Erasure Coded

Promoted to replica on read

Replicated Erasure Coded

Sam & David : refactor

Andreas & Loic : erasure code

Target : February 2014

Why save space before shortage ?

Alpha testers

Sponsors and developers

loic@dachary.org

Artwork GPLv3+ Tartaruga Feliz

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