qa/workunits/rbd: add QOS functional test

Signed-off-by: Mykola Golub <mgolub@suse.com>

diff --git a/qa/workunits/rbd/qos.sh b/qa/workunits/rbd/qos.sh
new file mode 100755 (executable)
index 0000000..b536fbc
--- /dev/null
+++ b/qa/workunits/rbd/qos.sh
@@ -0,0 +1,87 @@
+#!/bin/sh -ex
+
+POOL=rbd
+IMAGE=test$$
+IMAGE_SIZE=1G
+TOLERANCE_PRCNT=10
+
+rbd_bench() {
+    local image=$1
+    local type=$2
+    local total=$3
+    local qos_type=$4
+    local qos_limit=$5
+    local iops_var_name=$6
+    local bps_var_name=$7
+    local timeout=$8
+    local timeout_cmd=""
+
+    if [ -n "${timeout}" ]; then
+        timeout_cmd="timeout --preserve-status ${timeout}"
+    fi
+
+    # parse `rbd bench` output for string like this:
+    # elapsed:    25  ops:     2560  ops/sec:   100.08  bytes/sec: 409928.13
+    iops_bps=$(${timeout_cmd} rbd bench "${image}" \
+                              --io-type ${type} --io-size 4K \
+                              --io-total ${total} --rbd-cache=false \
+                              --rbd_qos_${qos_type}_limit ${qos_limit} |
+                   awk '/elapsed:/ {print int($6) ":" int($8)}')
+    eval ${iops_var_name}=${iops_bps%:*}
+    eval ${bps_var_name}=${iops_bps#*:}
+}
+
+rbd create "${POOL}/${IMAGE}" -s ${IMAGE_SIZE}
+rbd bench "${POOL}/${IMAGE}" --io-type write --io-size 4M --io-total ${IMAGE_SIZE}
+
+rbd_bench "${POOL}/${IMAGE}" write ${IMAGE_SIZE} iops 0 iops bps 60
+iops_unlimited=$iops
+bps_unlimited=$bps
+
+test "${iops_unlimited}" -ge 20 || exit 0
+
+io_total=$((bps_unlimited * 30))
+
+rbd_bench "${POOL}/${IMAGE}" write ${io_total} iops $((iops_unlimited / 2)) iops bps
+test "${iops}" -lt $((iops_unlimited / 2 * (100 + TOLERANCE_PRCNT) / 100))
+
+rbd_bench "${POOL}/${IMAGE}" write ${io_total} write_iops $((iops_unlimited / 2)) iops bps
+test "${iops}" -lt $((iops_unlimited / 2 * (100 + TOLERANCE_PRCNT) / 100))
+
+rbd_bench "${POOL}/${IMAGE}" write ${io_total} bps $((bps_unlimited / 2)) iops bps
+test "${bps}" -lt $((bps_unlimited / 2 * (100 + TOLERANCE_PRCNT) / 100))
+
+rbd_bench "${POOL}/${IMAGE}" write ${io_total} write_bps $((bps_unlimited / 2)) iops bps
+test "${bps}" -lt $((bps_unlimited / 2 * (100 + TOLERANCE_PRCNT) / 100))
+
+rbd_bench "${POOL}/${IMAGE}" read ${io_total} iops 0 iops bps
+iops_unlimited=$iops
+bps_unlimited=$bps
+
+test "${iops_unlimited}" -ge 20 || exit 0
+
+io_total=$((bps_unlimited * 30))
+
+rbd_bench "${POOL}/${IMAGE}" read ${io_total} iops $((iops_unlimited / 2)) iops bps
+test "${iops}" -lt $((iops_unlimited / 2 * (100 + TOLERANCE_PRCNT) / 100))
+
+rbd_bench "${POOL}/${IMAGE}" read ${io_total} read_iops $((iops_unlimited / 2)) iops bps
+test "${iops}" -lt $((iops_unlimited / 2 * (100 + TOLERANCE_PRCNT) / 100))
+
+rbd_bench "${POOL}/${IMAGE}" read ${io_total} bps $((bps_unlimited / 2)) iops bps
+test "${bps}" -lt $((bps_unlimited / 2 * (100 + TOLERANCE_PRCNT) / 100))
+
+rbd_bench "${POOL}/${IMAGE}" read ${io_total} read_bps $((bps_unlimited / 2)) iops bps
+test "${bps}" -lt $((bps_unlimited / 2 * (100 + TOLERANCE_PRCNT) / 100))
+
+# test a config override is applied
+rbd config image set "${POOL}/${IMAGE}" rbd_qos_iops_limit $((iops_unlimited / 4))
+rbd_bench "${POOL}/${IMAGE}" read ${io_total} iops $((iops_unlimited / 2)) iops bps
+test "${iops}" -lt $((iops_unlimited / 4 * (100 + TOLERANCE_PRCNT) / 100))
+rbd config image remove "${POOL}/${IMAGE}" rbd_qos_iops_limit
+rbd_bench "${POOL}/${IMAGE}" read ${io_total} iops $((iops_unlimited / 2)) iops bps
+test "${iops}" -lt $((iops_unlimited / 2 * (100 + TOLERANCE_PRCNT) / 100))
+
+rbd rm "${POOL}/${IMAGE}"
+
+echo OK