Yes -- the "image" will be in the replicated pool and its data blocks will be in the specified data pool. An "rbd info" against the image will show the data pool. On Thu, Oct 12, 2017 at 2:40 PM, Josy <josy@xxxxxxxxxxxxxxxxxxxxx> wrote: > Thank you for your reply. > > I created a erasure coded pool 'ecpool' and a replicated pool to store > metadata 'ec_rep_pool' > > And created image as you mentioned : > > rbd create --size 20G --data-pool ecpool ec_rep_pool/ectestimage1 > > But the image seems to be created in ec_rep_pool > > ============ > [cephuser@ceph-las-admin-a1 ceph-cluster]$ rbd ls -l ecpool > [cephuser@ceph-las-admin-a1 ceph-cluster]$ rbd ls -l ec_rep_pool > NAME SIZE PARENT > FMT PROT LOCK > ectestimage 20480M > 2 > ectestimage1 20480M > 2 > > > Is that how it suppose to work ? > > > On 12-10-2017 23:53, David Turner wrote: > > 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 <jdillama@xxxxxxxxxx> 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 <josy@xxxxxxxxxxxxxxxxxxxxx> 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 >> > ceph-users@xxxxxxxxxxxxxx >> > http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com >> >> >> >> -- >> Jason >> _______________________________________________ >> ceph-users mailing list >> ceph-users@xxxxxxxxxxxxxx >> http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com > > -- Jason _______________________________________________ ceph-users mailing list ceph-users@xxxxxxxxxxxxxx http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com
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