qa: workunits: mon: test snaps ops using rbd.

Regression test for #6047

Signed-off-by: Joao Eduardo Luis <jecluis@gmail.com>

qa/workunits/mon/rbd_snaps_ops.sh

@@ -0,0 +1,39 @@
+#!/bin/bash
+
+# attempt to trigger #6047
+
+
+cmd_no=0
+expect()
+{
+  cmd_no=$(($cmd_no+1))
+  cmd="$1"
+  expected=$2
+  echo "[$cmd_no] $cmd"
+  eval  $cmd
+  ret=$?
+  if [[ $ret -ne $expected ]]; then
+    echo "[$cmd_no] unexpected return '$ret', expected '$expected'"
+    exit 1
+  fi
+}
+
+expect 'ceph osd pool create test 256 256' 0
+expect 'ceph osd pool mksnap test snapshot' 0
+expect 'ceph osd pool rmsnap test snapshot' 0
+
+expect 'rbd --pool=test create --size=102400 image' 0
+expect 'rbd --pool=test snap create image@snapshot' 22
+
+expect 'ceph osd pool delete test test --yes-i-really-really-mean-it' 0
+expect 'ceph osd pool create test 256 256' 0
+expect 'rbd --pool=test create --size=102400 image' 0
+expect 'rbd --pool=test snap create image@snapshot' 0
+expect 'rbd --pool=test snap ls image' 0
+expect 'rbd --pool=test snap rm image@snapshot' 0
+
+expect 'ceph osd pool mksnap test snapshot' 22
+
+expect 'ceph osd pool delete test test --yes-i-really-really-mean-it' 0
+
+echo OK