OK, I misunderstood. It is not loaded by hand. We have permanent mappings listed in /etc/ceph/rbdmap which then get mapped automatically when the system boots. So, in that case, shouldn't single_major=Y since it essentially is just calling "rbd map" from an init script? On Tue, Jul 28, 2015 at 10:24 AM, Ilya Dryomov <idryomov@xxxxxxxxx> wrote: > On Tue, Jul 28, 2015 at 5:19 PM, Wyllys Ingersoll > <wyllys.ingersoll@xxxxxxxxxxxxxx> wrote: >> Actually, its a 4.1rc8 kernel. And modinfo shows that the single_major >> parameter defaults to false. >> >> $ sudo modinfo rbd >> filename: /lib/modules/4.1.0-040100rc8-generic/kernel/drivers/block/rbd.ko >> license: GPL >> description: RADOS Block Device (RBD) driver >> author: Jeff Garzik <jeff@xxxxxxxxxx> >> author: Yehuda Sadeh <yehuda@xxxxxxxxxxxxxxx> >> author: Sage Weil <sage@xxxxxxxxxxxx> >> author: Alex Elder <elder@xxxxxxxxxxx> >> srcversion: C0EF017464E250E25E466E8 >> depends: libceph >> intree: Y >> vermagic: 4.1.0-040100rc8-generic SMP mod_unload modversions >> signer: Build time autogenerated kernel key >> sig_key: FC:1C:37:16:92:C8:E7:E5:17:9C:06:C5:5F:C4:DF:7E:19:00:A9:0F >> sig_hashalgo: sha512 >> parm: single_major:Use a single major number for all rbd >> devices (default: false) (bool) > > Yes, it defaults to false. But if rbd.ko isn't loaded by the time you > do rbd map (which it shouldn't), rbd cli tool will load it for you with > single_major=Y. That's why I asked if you loaded it by hand. > > Thanks, > > Ilya -- To unsubscribe from this list: send the line "unsubscribe ceph-devel" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
