ceph/src/test/crush/crush_weights.sh

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