ceph/src/test/crush/crush_weights.sh

   1 #!/usr/bin/env bash
   2
   3 source $(dirname $0)/../detect-build-env-vars.sh
   4
   5 if [ `uname` = FreeBSD ]; then
   6     SED=gsed
   7 else
   8     SED=sed
   9 fi
  10
  11 read -r -d '' cm <<'EOF'
  12 # devices
  13 device 0 device0
  14 device 1 device1
  15 device 2 device2
  16 device 3 device3
  17 device 4 device4
  18 # types
  19 type 0 osd
  20 type 1 domain
  21 type 2 pool
  22 # buckets
  23 domain root {
  24     id -1        # do not change unnecessarily
  25     # weight 5.00000
  26     alg straw2
  27     hash 0    # rjenkins1
  28     item device0 weight 10.00000
  29     item device1 weight 10.00000
  30     item device2 weight 10.00000
  31     item device3 weight 10.00000
  32     item device4 weight 1.00000
  33 }
  34 # rules
  35 rule data {
  36     id 0
  37     type replicated
  38     step take root
  39     step choose firstn 0 type osd
  40     step emit
  41 }
  42 EOF
  43
  44 three=($(echo "$cm" | crushtool -c /dev/fd/0 --test --show-utilization \
  45                               --min-x 1 --max-x 1000000 --num-rep 3 | \
  46   grep "device \(0\|4\)" | $SED -e 's/^.*stored : \([0-9]\+\).*$/\1/'))
  47
  48 if test $(echo "scale=5; (10 - ${three[0]}/${three[1]}) < .75" | bc) = 1; then
  49     echo 3 replicas weights better distributed than they should be. 1>&2
  50     exit 1
  51 fi
  52
  53 one=($(echo "$cm" | crushtool -c /dev/fd/0 --test --show-utilization \
  54                               --min-x 1 --max-x 1000000 --num-rep 1 | \
  55   grep "device \(0\|4\)" | $SED -e 's/^.*stored : \([0-9]\+\).*$/\1/'))
  56
  57 if test $(echo "scale=5; (10 - ${one[0]}/${one[1]}) > .1 || (10 - ${one[0]}/${one[1]}) < -.1" | bc) = 1; then
  58     echo 1 replica not distributed as they should be. 1>&2
  59     exit 1
  60 fi