Commits on Nov 3, 2016

1. librbd: batch ObjectMap updations upon trim …

   Shrinking a clone which has snapshots and does not share
   majority of objects with its parent (i.e., there are less
   objects to be copied up) involves huge number of object
   map updates -- two (pre, post) per object. This results
   in lots of requests to be send to OSDs especially when
   trimming a gigantus image. This situation can be optimized
   by sending batch ObjectMap updates for an object range
   thereby significantly cutting down OSD traffic resulting
   in faster trim times.
   
   Fixes: http://tracker.ceph.com/issues/17356
   Signed-off-by: Venky Shankar <vshankar@redhat.com>

   

   vshankar committed Nov 3, 2016
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