Make it easy to adjust crush tunables. Create profiles:
legacy: the legacy values
argonaut: the argonaut defaults, and what is supported.. legacy! (*(
bobtail: best that bobtail supports
optimal: the current optimal values
default: the current default values
* In actuality, argonaut supports some of the tunables, but it doesn't
say so via the feature bits.
Signed-off-by: Sage Weil <sage@inktank.com>
Reviewed-by: Samuel Just <sam.just@inktank.com>
Reviewed-by: Dan Mick <dan.mick@inktank.com>
19ee231115
