qa/suites/rados: add simple pg-autoscaler test

Signed-off-by: Sage Weil <sage@redhat.com>

diff --git a/qa/suites/rados/singleton/all/pg-autoscaler.yaml b/qa/suites/rados/singleton/all/pg-autoscaler.yaml
new file mode 100644 (file)
index 0000000..ca4d531
--- /dev/null
+++ b/qa/suites/rados/singleton/all/pg-autoscaler.yaml
@@ -0,0 +1,26 @@
+roles:
+- - mon.a
+  - mgr.x
+  - osd.0
+  - osd.1
+  - osd.2
+  - osd.3
+  - client.0
+- - mon.b
+  - mon.c
+  - osd.4
+  - osd.5
+  - osd.6
+  - osd.7
+openstack:
+  - volumes: # attached to each instance
+      count: 4
+      size: 10 # GB
+tasks:
+- install:
+- ceph:
+    create_rbd_pool: false
+- workunit:
+    clients:
+      all:
+        - mon/pg_autoscaler.sh

diff --git a/qa/workunits/mon/pg_autoscaler.sh b/qa/workunits/mon/pg_autoscaler.sh
new file mode 100755 (executable)
index 0000000..29387c6
--- /dev/null
+++ b/qa/workunits/mon/pg_autoscaler.sh
@@ -0,0 +1,77 @@
+#!/bin/bash -ex
+
+NUM_OSDS=$(ceph osd ls | wc -l)
+if [ $NUM_OSDS -lt 6 ]; then
+    echo "test requires at least 6 OSDs"
+    exit 1
+fi
+
+NUM_POOLS=$(ceph osd pool ls | wc -l)
+if [ $NUM_POOLS -gt 0 ]; then
+    echo "test requires no preexisting pools"
+    exit 1
+fi
+
+function wait_for() {
+    local sec=$1
+    local cmd=$2
+
+    while true ; do
+       if bash -c "$cmd" ; then
+           break
+       fi
+       sec=$(( $sec - 1 ))
+       if [ $sec -eq 0 ]; then
+           echo failed
+           return 1
+       fi
+       sleep 1
+    done
+    return 0
+}
+
+# enable
+ceph config set mgr mgr/pg_autoscaler/sleep_interval 5
+ceph mgr module enable pg_autoscaler
+
+# pg_num_min
+ceph osd pool create a 16 --pg-num-min 4
+ceph osd pool create b 16 --pg-num-min 2
+ceph osd pool set a pg_autoscale_mode on
+ceph osd pool set b pg_autoscale_mode on
+
+wait_for 120 "ceph osd pool get a pg_num | grep 4"
+wait_for 120 "ceph osd pool get b pg_num | grep 2"
+
+# target ratio
+ceph osd pool set a target_size_ratio .5
+ceph osd pool set b target_size_ratio .1
+sleep 30
+APGS=$(ceph osd dump -f json-pretty | jq '.pools[0].pg_num')
+BPGS=$(ceph osd dump -f json-pretty | jq '.pools[1].pg_num')
+test $APGS -gt 100
+test $BPGS -gt 10
+
+# small ratio change does not change pg_num
+ceph osd pool set a target_size_ratio .7
+ceph osd pool set b target_size_ratio .2
+sleep 10
+ceph osd pool get a pg_num | grep $APGS
+ceph osd pool get b pg_num | grep $BPGS
+
+# too much ratio
+ceph osd pool set a target_size_ratio .9
+ceph osd pool set b target_size_ratio .9
+wait_for 60 "ceph health detail | grep POOL_TARGET_SIZE_RATIO_OVERCOMMITTED"
+wait_for 60 "ceph health detail | grep 1.8"
+ceph osd pool set a target_size_ratio 0
+ceph osd pool set b target_size_ratio 0
+
+# target_size
+ceph osd pool set a target_size_bytes 1000000000000000
+ceph osd pool set b target_size_bytes 1000000000000000
+wait_for 60 "ceph health detail | grep POOL_TARGET_SIZE_BYTES_OVERCOMMITTED"
+ceph osd pool set a target_size_bytes 0
+ceph osd pool set b target_size_ratio 0
+
+echo OK