Ilya Dryomov
3cfa3b16dd
rbd: default to single-major device number scheme
...
It's been 3.5 years, let's turn it on by default. Support in rbd(8)
utility goes back to pre-firefly, "rbd map" has been loading the module
with single_major=Y ever since. However, if the module is already
loaded (whether by hand or at boot time), we end up with single_major=N.
Also, some people don't install rbd(8) and use the sysfs interface
directly.
(With single-major=N, a major number is consumed for every mapping,
imposing a limit of ~240 rbd images per host. single-major=Y allows
mapping thousands of rbd images on a single machine.)
Signed-off-by: Ilya Dryomov <idryomov@gmail.com>
Reviewed-by: Jason Dillaman <dillaman@redhat.com>
2017-11-13 16:33:08 +01:00
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