If you are attempting to use RBD "fancy" striping (e.g. stripe unit != object size and stripe count != 1) with krbd, the answer is that it is still unsupported. On Wed, Aug 3, 2016 at 8:41 AM, wr@xxxxxxxx <wr@xxxxxxxx> wrote: > Hi List, > i am using Ceph Infernalis and Ubuntu 14.04 Kernel 3.13. > 18 Data Server / 3 MON / 3 RBD Clients > > I want to use RBD on the Client with image format 2 and Striping. > Is it supported? > > I want to create rbd with: > rbd create testrbd -s 2T --image-format=2 --image-feature=striping > --image-feature=exclusive-lock --stripe-unit 65536B --stripe-count 8 > > Do i become better single Thread performance with a higher stripe count? > If not: Should i use Ubuntu 16.04 with Kernel 4.4 ? Is it with that Kernel > supported? > > The manpage says: > > http://manpages.ubuntu.com/manpages/wily/man8/rbd.8.html > > PARAMETERS > > --image-format format > Specifies which object layout to use. The default is 1. > > · format 2 - Use the second rbd format, which is supported > by > librbd and kernel since version 3.11 (except for > striping). > This adds support for cloning and is more easily extensible > to > allow more features in the future. > > > Regards > > _______________________________________________ > 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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