Here is your friend. http://docs.ceph.com/docs/luminous/rados/operations/erasure-code/#erasure-coding-with-overwrites
On Thu, Oct 12, 2017 at 2:09 PM Jason Dillaman <[email protected]> wrote: > The image metadata still needs to live in a replicated data pool -- > only the data blocks can be stored in an EC pool. Therefore, when > creating the image, you should provide the "--data-pool <pool-name>" > optional to specify the EC pool name. > > > On Thu, Oct 12, 2017 at 2:06 PM, Josy <[email protected]> wrote: > > Hi, > > > > I am trying to setup an erasure coded pool with rbd image. > > > > The ceph version is Luminous 12.2.1. and I understand, since Luminous, > RBD > > and Cephfs can store their data in an erasure coded pool without use of > > cache tiring. > > > > I created a pool ecpool and when trying to create a rbd image, gets this > > error. > > > > ============== > > > > [cephuser@ceph-las-admin-a1 ceph-cluster]$ rbd create --size 20G > > ecpool/ectestimage2 > > 2017-10-12 10:55:37.992965 7f18857fa700 -1 librbd::image::CreateRequest: > > 0x55608e1e0c20 handle_add_image_to_directory: error adding image to > > directory: (95) Operation not supported > > rbd: create error: (95) Operation not supported > > ============== > > > > > > > > _______________________________________________ > > ceph-users mailing list > > [email protected] > > http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com > > > > -- > Jason > _______________________________________________ > ceph-users mailing list > [email protected] > http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com >
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