On Fri, Sep 4, 2015 at 4:30 PM, Sebastien Han <seb@xxxxxxxxxx> wrote: > Which Kernel are you running on? > These days, the theoretical limit is 65536 AFAIK. > > Ilya would know the kernel needed for that. 3.14 or later, and, if you are loading your kernel modules by hand or have your distro load them for you during boot, you'll need to make sure rbd.ko is loaded with single_major=T. (rbd cli tool loads rbd.ko with single_major=T but won't reload if the module is already loaded.) Thanks, Ilya _______________________________________________ ceph-users mailing list ceph-users@xxxxxxxxxxxxxx http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com