ceph/src/test/crush/crush_weights.sh

   1 #!/bin/bash
   2
   3 source $(dirname $0)/../detect-build-env-vars.sh
   4
   5 read -r -d '' cm <<'EOF'
   6 # devices
   7 device 0 device0
   8 device 1 device1
   9 device 2 device2
  10 device 3 device3
  11 device 4 device4
  12 # types
  13 type 0 osd
  14 type 1 domain
  15 type 2 pool
  16 # buckets
  17 domain root {
  18     id -1        # do not change unnecessarily
  19     # weight 5.000
  20     alg straw2
  21     hash 0    # rjenkins1
  22     item device0 weight 10.0
  23     item device1 weight 10.0
  24     item device2 weight 10.0
  25     item device3 weight 10.0
  26     item device4 weight 1.000
  27 }
  28 # rules
  29 rule data {
  30     ruleset 0
  31     type replicated
  32     min_size 1
  33     max_size 10
  34     step take root
  35     step choose firstn 0 type osd
  36     step emit
  37 }
  38 EOF
  39
  40 three=($(echo "$cm" | crushtool -c /dev/fd/0 --test --show-utilization \
  41                               --min-x 1 --max-x 1000000 --num-rep 3 | \
  42   grep "device \(0\|4\)" | sed -e 's/^.*stored : \([0-9]\+\).*$/\1/'))
  43
  44 if test $(echo "scale=5; (10 - ${three[0]}/${three[1]}) < .75" | bc) = 1; then
  45     echo 3 replicas weights better distributed than they should be. 1>&2
  46     exit 1
  47 fi
  48
  49 one=($(echo "$cm" | crushtool -c /dev/fd/0 --test --show-utilization \
  50                               --min-x 1 --max-x 1000000 --num-rep 1 | \
  51   grep "device \(0\|4\)" | sed -e 's/^.*stored : \([0-9]\+\).*$/\1/'))
  52
  53 if test $(echo "scale=5; (10 - ${one[0]}/${one[1]}) > .1 || (10 - ${one[0]}/${one[1]}) < -.1" | bc) = 1; then
  54     echo 1 replica not distributed as they should be. 1>&2
  55     exit 1
  56 fi