ceph/src/test/cli/osdmaptool/test-map-pgs.t

   1   $ NUM_OSDS=500
   2   $ POOL_COUNT=1 # data + metadata + rbd
   3   $ SIZE=3
   4   $ PG_BITS=4
   5 #
   6 # create an osdmap with a few hundred devices and a realistic crushmap
   7 #
   8   $ OSD_MAP="osdmap"
   9   $ osdmaptool --osd_pool_default_size $SIZE --pg_bits $PG_BITS --createsimple $NUM_OSDS "$OSD_MAP" > /dev/null
  10   osdmaptool: osdmap file 'osdmap'
  11   $ CRUSH_MAP="crushmap"
  12   $ CEPH_ARGS="--debug-crush 0" crushtool --outfn "$CRUSH_MAP" --build --num_osds $NUM_OSDS node straw 10 rack straw 10 root straw 0
  13   $ osdmaptool --import-crush "$CRUSH_MAP" "$OSD_MAP" > /dev/null
  14   osdmaptool: osdmap file 'osdmap'
  15   $ OUT="$TESTDIR/out"
  16 #
  17 # --test-map-pgs
  18 #
  19   $ osdmaptool --mark-up-in --test-map-pgs "$OSD_MAP" > "$OUT"
  20   osdmaptool: osdmap file 'osdmap'
  21   $ PG_NUM=$(($NUM_OSDS << $PG_BITS))
  22   $ grep "pg_num $PG_NUM" "$OUT" || cat $OUT
  23   pool 0 pg_num 8000
  24   $ TOTAL=$((POOL_COUNT * $PG_NUM))
  25   $ grep -E "size $SIZE[[:space:]]$TOTAL" $OUT || cat $OUT
  26   size 3\t8000 (esc)
  27   $ STATS_CRUSH=$(grep '^ avg ' "$OUT")
  28 #
  29 # --test-map-pgs --test-random is expected to change nothing regarding the totals
  30 #
  31   $ osdmaptool --mark-up-in --test-random --test-map-pgs "$OSD_MAP" > "$OUT"
  32   osdmaptool: osdmap file 'osdmap'
  33   $ PG_NUM=$(($NUM_OSDS << $PG_BITS))
  34   $ grep "pg_num $PG_NUM" "$OUT" || cat $OUT
  35   pool 0 pg_num 8000
  36   $ TOTAL=$((POOL_COUNT * $PG_NUM))
  37   $ grep -E "size $SIZE[[:space:]]$TOTAL" $OUT || cat $OUT
  38   size 3\t8000 (esc)
  39   $ STATS_RANDOM=$(grep '^ avg ' "$OUT")
  40 # it is almost impossible to get the same stats with random and crush
  41 # if they are, it most probably means something went wrong somewhere
  42   $ test "$STATS_CRUSH" != "$STATS_RANDOM"
  43 #
  44 # cleanup
  45 #
  46   $ rm -f "$CRUSH_MAP" "$OSD_MAP" "$OUT"