ceph/src/test/cli/crushtool/reweight_multiple.t

   1   $ crushtool -c "$TESTDIR/simple.template.multitree" -o mt
   2   $ crushtool -i mt --reweight-item osd1 2.5 -o mt
   3   crushtool reweighting item osd1 to 2.5
   4   $ crushtool -d mt -o mt.txt
   5   $ diff mt.txt "$TESTDIR/simple.template.multitree.reweighted"