Hi, Thanks for getting back to me. It turns out that setting crush tunables to “optimal” profile caused the problem I encountered. I set it back to “default” and specified “layering” as the only image-feature as you suggested fixed the problem. Thanks again. Steven > On May 13, 2016, at 4:39 PM, Ilya Dryomov <idryomov@xxxxxxxxx> wrote: > > On Fri, May 13, 2016 at 10:11 PM, Steven Hsiao-Ting Lee > <shl1@xxxxxxxxxxx> wrote: >> Hi, >> >> I’m playing with Jewel and discovered format 1 images have been deprecated. Since the rbd kernel module in CentOS/RHEL 7 does not yet support format 2 images, how do I access RBD images created in Jewel from CentOS/RHEL 7 clients? Thanks! > > It does support format 2 images. What it doesn't support is the extra > features enabled by default in jewel. > >> Do >> >> $ rbd feature disable <image-name> deep-flatten,fast-diff,object-map,exclusive-lock >> >> to disable features unsupported by the kernel client. If you are using the >> kernel client, you should create your images with >> >> $ rbd create --size <size> --image-feature layering <image-name> >> >> or add >> >> rbd default features = 3 >> >> to ceph.conf on the client side. (Setting rbd default features on the >> OSDs will have no effect.) > > Thanks, > > Ilya _______________________________________________ ceph-users mailing list ceph-users@xxxxxxxxxxxxxx http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com
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