== sanity test 60c: unlink file when mds full ============ 04:30:24 (1788251424)
create 5000 files
 - open/close 424 (time 1788251439.16 total 10.03 last 42.29)
 - open/close 849 (time 1788251449.19 total 20.06 last 42.36)
 - open/close 1277 (time 1788251459.23 total 30.10 last 42.64)
 - open/close 1702 (time 1788251469.25 total 40.12 last 42.41)
 - open/close 2127 (time 1788251479.26 total 50.13 last 42.47)
 - open/close 2578 (time 1788251489.27 total 60.14 last 45.02)
 - open/close 3022 (time 1788251499.29 total 70.16 last 44.33)
 - open/close 3455 (time 1788251509.30 total 80.17 last 43.24)
 - open/close 3865 (time 1788251519.30 total 90.17 last 41.00)
 - open/close 4266 (time 1788251529.32 total 100.19 last 40.02)
 - open/close 4641 (time 1788251539.37 total 110.24 last 37.34)
total: 5000 open/close in 119.57 seconds: 41.82 ops/second
fail_loc=0x80000137
 - unlinked 0 (time 1788251553 ; total 0 ; last 0)
total: 5000 unlinks in 90 seconds: 55.555557 unlinks/second
fail_loc=0