blob: 99863849eb140f0da4ed9187b0fb79cface93100 (
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#!/usr/bin/env bash
set -ex
RUN_TIME=300 # approximate duration of run (seconds)
[ $# -eq 1 ] && RUN_TIME="$1"
IMAGE_NAME="image-$$"
IMAGE_SIZE="1024" # MB
function get_time() {
date '+%s'
}
function times_up() {
local end_time="$1"
test $(get_time) -ge "${end_time}"
}
function map_unmap() {
[ $# -eq 1 ] || exit 99
local image_name="$1"
local dev
dev="$(sudo rbd map "${image_name}")"
sudo rbd unmap "${dev}"
}
#### Start
rbd create "${IMAGE_NAME}" --size="${IMAGE_SIZE}"
COUNT=0
START_TIME=$(get_time)
END_TIME=$(expr $(get_time) + ${RUN_TIME})
while ! times_up "${END_TIME}"; do
map_unmap "${IMAGE_NAME}"
COUNT=$(expr $COUNT + 1)
done
ELAPSED=$(expr "$(get_time)" - "${START_TIME}")
rbd rm "${IMAGE_NAME}"
echo "${COUNT} iterations completed in ${ELAPSED} seconds"
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