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Ceph Cookbook - Second Edition by Karan Singh, Michael Hackett, Vikhyat Umrao

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Erasure code plugin

Ceph gives us options to choose the erasure code plugin while creating the erasure code profile. One can create multiple erasure code profiles with different plugins each time. Choosing the right profile is important because it cannot be modified after the pool is created. In order to change a profile, a new pool with a different profile needs to be created, and all objects from the previous pool moved to the new pool. Ceph supports the following plugins for erasure-coding:

  • Jerasure erasure code plugin: The Jerasure plugin is the most generic and flexible plugin. It is also the default for Ceph erasure-coded pools. The Jerasure plugin encapsulates the Jerasure library. Jerasure uses the Reed Solomon Code technique. The ...

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