ceph/qa/workunits/rbd/map-unmap.sh

   1 #!/bin/bash -ex
   2
   3 RUN_TIME=300            # approximate duration of run (seconds)
   4
   5 [ $# -eq 1 ] && RUN_TIME="$1"
   6
   7 IMAGE_NAME="image-$$"
   8 IMAGE_SIZE="1024"       # MB
   9
  10 function get_time() {
  11         date '+%s'
  12 }
  13
  14 function times_up() {
  15         local end_time="$1"
  16
  17         test $(get_time) -ge "${end_time}"
  18 }
  19
  20 function map_unmap() {
  21         [ $# -eq 1 ] || exit 99
  22         local image_name="$1"
  23
  24         local dev
  25         dev="$(sudo rbd map "${image_name}")"
  26         sudo rbd unmap "${dev}"
  27 }
  28
  29 #### Start
  30
  31 rbd create "${IMAGE_NAME}" --size="${IMAGE_SIZE}"
  32
  33 COUNT=0
  34 START_TIME=$(get_time)
  35 END_TIME=$(expr $(get_time) + ${RUN_TIME})
  36 while ! times_up "${END_TIME}"; do
  37         map_unmap "${IMAGE_NAME}"
  38         COUNT=$(expr $COUNT + 1)
  39 done
  40 ELAPSED=$(expr "$(get_time)" - "${START_TIME}")
  41
  42 rbd rm "${IMAGE_NAME}"
  43
  44 echo "${COUNT} iterations completed in ${ELAPSED} seconds"