ceph/qa/workunits/mon/pg_autoscaler.sh

   1 #!/bin/bash -ex
   2
   3 NUM_OSDS=$(ceph osd ls | wc -l)
   4 if [ $NUM_OSDS -lt 6 ]; then
   5     echo "test requires at least 6 OSDs"
   6     exit 1
   7 fi
   8
   9 NUM_POOLS=$(ceph osd pool ls | wc -l)
  10 if [ $NUM_POOLS -gt 0 ]; then
  11     echo "test requires no preexisting pools"
  12     exit 1
  13 fi
  14
  15 function wait_for() {
  16     local sec=$1
  17     local cmd=$2
  18
  19     while true ; do
  20         if bash -c "$cmd" ; then
  21             break
  22         fi
  23         sec=$(( $sec - 1 ))
  24         if [ $sec -eq 0 ]; then
  25             echo failed
  26             return 1
  27         fi
  28         sleep 1
  29     done
  30     return 0
  31 }
  32
  33 # enable
  34 ceph config set mgr mgr/pg_autoscaler/sleep_interval 5
  35 ceph mgr module enable pg_autoscaler
  36
  37 # pg_num_min
  38 ceph osd pool create a 16 --pg-num-min 4
  39 ceph osd pool create b 16 --pg-num-min 2
  40 ceph osd pool set a pg_autoscale_mode on
  41 ceph osd pool set b pg_autoscale_mode on
  42
  43 wait_for 120 "ceph osd pool get a pg_num | grep 4"
  44 wait_for 120 "ceph osd pool get b pg_num | grep 2"
  45
  46 # target ratio
  47 ceph osd pool set a target_size_ratio .5
  48 ceph osd pool set b target_size_ratio .1
  49 sleep 30
  50 APGS=$(ceph osd dump -f json-pretty | jq '.pools[0].pg_num')
  51 BPGS=$(ceph osd dump -f json-pretty | jq '.pools[1].pg_num')
  52 test $APGS -gt 100
  53 test $BPGS -gt 10
  54
  55 # small ratio change does not change pg_num
  56 ceph osd pool set a target_size_ratio .7
  57 ceph osd pool set b target_size_ratio .2
  58 sleep 10
  59 ceph osd pool get a pg_num | grep $APGS
  60 ceph osd pool get b pg_num | grep $BPGS
  61
  62 # too much ratio
  63 ceph osd pool set a target_size_ratio .9
  64 ceph osd pool set b target_size_ratio .9
  65 wait_for 60 "ceph health detail | grep POOL_TARGET_SIZE_RATIO_OVERCOMMITTED"
  66 wait_for 60 "ceph health detail | grep 1.8"
  67 ceph osd pool set a target_size_ratio 0
  68 ceph osd pool set b target_size_ratio 0
  69
  70 # target_size
  71 ceph osd pool set a target_size_bytes 1000000000000000
  72 ceph osd pool set b target_size_bytes 1000000000000000
  73 wait_for 60 "ceph health detail | grep POOL_TARGET_SIZE_BYTES_OVERCOMMITTED"
  74 ceph osd pool set a target_size_bytes 0
  75 ceph osd pool set b target_size_ratio 0
  76
  77 ceph osd pool rm a a --yes-i-really-really-mean-it
  78 ceph osd pool rm b b --yes-i-really-really-mean-it
  79
  80 echo OK