== sanity test 60c: unlink file when mds full ============ 08:40:06 (1789130406)
create 5000 files
 - open/close 575 (time 1789130420.27 total 10.01 last 57.43)
 - open/close 1129 (time 1789130430.28 total 20.02 last 55.34)
 - open/close 1636 (time 1789130440.30 total 30.04 last 50.60)
 - open/close 2177 (time 1789130450.31 total 40.06 last 54.00)
 - open/close 2575 (time 1789130460.33 total 50.07 last 39.74)
 - open/close 3073 (time 1789130470.35 total 60.10 last 49.69)
 - open/close 3611 (time 1789130480.38 total 70.13 last 53.63)
 - open/close 4033 (time 1789130490.41 total 80.15 last 42.09)
 - open/close 4571 (time 1789130500.41 total 90.16 last 53.77)
total: 5000 open/close in 98.21 seconds: 50.91 ops/second
fail_loc=0x80000137
 - unlinked 0 (time 1789130513 ; total 0 ; last 0)
total: 5000 unlinks in 70 seconds: 71.428574 unlinks/second
fail_loc=0