== sanity test 230l: readdir between MDTs won't crash ==== 06:25:58 (1789381558)
 - open/close 554 (time 1789381574.68 total 10.01 last 55.32)
 - open/close 994 (time 1789381584.69 total 20.02 last 43.95)
total: 1000 open/close in 20.19 seconds: 49.53 ops/second