Hello,
I have a running cluster, which use the (previous) default CRUSH rule,
with :
step take default
step choose firstn 0 type osd
step emit
Since I have multiple OSD in the same host, I need to change that to
have better redondancy.
My crush map use types datacenter → room → network → rack → host → osd.
For now I would like to replicate per "network", I suppose I can simply
replace "step choose firstn 0 type osd" per "step choose firstn 0 type
network" ; but is it safe to do that on a running cluster ?
And I suppose it will throw a lot of data move, is it possible to do
that «slowly», to avoid production slowdown ?
Thanks,
Olivier B.
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