== sanity test 60c: unlink file when mds full ============ 16:31:01 (1788813061)
create 5000 files
 - open/close 500 (time 1788813076.05 total 10.01 last 49.94)
 - open/close 936 (time 1788813086.05 total 20.01 last 43.59)
 - open/close 1247 (time 1788813096.06 total 30.02 last 31.07)
 - open/close 1544 (time 1788813106.06 total 40.03 last 29.69)
 - open/close 1743 (time 1788813116.09 total 50.05 last 19.85)
 - open/close 2124 (time 1788813126.11 total 60.08 last 38.01)
 - open/close 2413 (time 1788813136.11 total 70.08 last 28.90)
 - open/close 2800 (time 1788813146.12 total 80.08 last 38.68)
 - open/close 3318 (time 1788813156.14 total 90.10 last 51.69)
 - open/close 3807 (time 1788813166.15 total 100.11 last 48.88)
 - open/close 4287 (time 1788813176.16 total 110.12 last 47.95)
 - open/close 4809 (time 1788813186.17 total 120.13 last 52.12)
total: 5000 open/close in 124.18 seconds: 40.26 ops/second
fail_loc=0x80000137
 - unlinked 0 (time 1788813196 ; total 0 ; last 0)
total: 5000 unlinks in 76 seconds: 65.789474 unlinks/second
fail_loc=0