--- /dev/null
+#!/bin/bash -x
+
+set -e
+
+expect_false()
+{
+ set -x
+ if "$@"; then return 1; else return 0; fi
+}
+
+echo note: assuming mon.a is on the currenet host
+
+ceph daemon mon.a version | grep version
+
+# get debug_ms setting and strip it, painfully for reuse
+old_ms=$(ceph daemon mon.a config get debug_ms | grep debug_ms | \
+ sed -e 's/.*: //' -e 's/["\}\\]//g')
+ceph daemon mon.a config set debug_ms 13
+new_ms=$(ceph daemon mon.a config get debug_ms | grep debug_ms | \
+ sed -e 's/.*: //' -e 's/["\}\\]//g')
+[ "$new_ms" = "13/13" ]
+ceph daemon mon.a config set debug_ms $old_ms
+new_ms=$(ceph daemon mon.a config get debug_ms | grep debug_ms | \
+ sed -e 's/.*: //' -e 's/["\}\\]//g')
+[ "$new_ms" = "$old_ms" ]
+
+echo OK