On Fri, Jan 17, 2014 at 2:05 AM, Christian Balzer <chibi@xxxxxxx> wrote: > On Thu, 16 Jan 2014 15:51:17 +0200 Ilya Dryomov wrote: > >> On Wed, Jan 15, 2014 at 5:42 AM, Sage Weil <sage@xxxxxxxxxxx> wrote: >> > >> > [...] >> > >> > * rbd: support for 4096 mapped devices, up from ~250 (Ilya Dryomov) >> >> Just a note, v0.75 simply adds some of the infrastructure, the actual >> support for this will arrive with kernel 3.14. The theoretical limit >> is 65536 mapped devices, although I admit I haven't tried mapping more >> than ~4000 at once. >> > Just for clarification, this is for the client side when using the kernel > module, right? > > Not looking at more than about 150 devices per compute node now, but that > might change and there is also the case of failovers... Yes, this is how many 'rbd map ...'s a single rbd kernel module (and therefore a single compute node) can handle. Kernels 3.13 and below can handle ~130-150, depending on the machine. Thanks, Ilya _______________________________________________ ceph-users mailing list ceph-users@xxxxxxxxxxxxxx http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com