read:
sb          :       86016
journal     :           0
btree       :     5242880
user        :102313054208
cached      :           0
parity      :           0
stripe      :           0
need_gc_gens:           0
need_discard:           0
unstriped   :           0
write:
sb          :      645120
journal     :           0
btree       :       16384
user        :252377698304
cached      :           0
parity      :           0
stripe      :           0
need_gc_gens:           0
need_discard:           0
unstriped   :           0
