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
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