== sanity test 60c: unlink file when mds full ============ 14:37:40 (1788460660)
create 5000 files
 - open/close 536 (time 1788460673.86 total 10.03 last 53.46)
 - open/close 1080 (time 1788460683.87 total 20.04 last 54.32)
 - open/close 1580 (time 1788460693.88 total 30.05 last 49.97)
 - open/close 2129 (time 1788460703.90 total 40.06 last 54.80)
 - open/close 2654 (time 1788460713.91 total 50.08 last 52.44)
 - open/close 3135 (time 1788460723.91 total 60.08 last 48.08)
 - open/close 3628 (time 1788460733.93 total 70.10 last 49.22)
 - open/close 4040 (time 1788460743.93 total 80.10 last 41.18)
 - open/close 4491 (time 1788460753.94 total 90.11 last 45.08)
 - open/close 4963 (time 1788460763.95 total 100.12 last 47.15)
total: 5000 open/close in 100.78 seconds: 49.61 ops/second
fail_loc=0x80000137
 - unlinked 0 (time 1788460769 ; total 0 ; last 0)
total: 5000 unlinks in 66 seconds: 75.757576 unlinks/second
fail_loc=0