== sanity test 60c: unlink file when mds full ============ 00:59:24 (1789448364)
create 5000 files
 - open/close 593 (time 1789448378.15 total 10.02 last 59.21)
 - open/close 1202 (time 1789448388.15 total 20.02 last 60.87)
 - open/close 1771 (time 1789448398.17 total 30.04 last 56.81)
 - open/close 2340 (time 1789448408.17 total 40.04 last 56.87)
 - open/close 2928 (time 1789448418.18 total 50.05 last 58.77)
 - open/close 3478 (time 1789448428.18 total 60.05 last 54.99)
 - open/close 4055 (time 1789448438.19 total 70.06 last 57.65)
 - open/close 4628 (time 1789448448.19 total 80.06 last 57.28)
total: 5000 open/close in 87.47 seconds: 57.16 ops/second
fail_loc=0x80000137
 - unlinked 0 (time 1789448459 ; total 0 ; last 0)
total: 5000 unlinks in 66 seconds: 75.757576 unlinks/second
fail_loc=0