1 files changed, 45 insertions, 0 deletions
diff --git a/qa/workunits/rbd/map-unmap.sh b/qa/workunits/rbd/map-unmap.sh
new file mode 100755
index 000000000..99863849e
--- /dev/null
+++ b/qa/workunits/rbd/map-unmap.sh
@@ -0,0 +1,45 @@
+#!/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"