== sanity test 60c: unlink file when mds full ============ 14:21:26 (1787854886)
create 5000 files
 - open/close 520 (time 1787854900.03 total 10.00 last 51.99)
 - open/close 1045 (time 1787854910.03 total 20.01 last 52.48)
 - open/close 1566 (time 1787854920.04 total 30.01 last 52.08)
 - open/close 1987 (time 1787854930.06 total 40.03 last 42.02)
 - open/close 2437 (time 1787854940.06 total 50.04 last 44.97)
 - open/close 2894 (time 1787854950.07 total 60.04 last 45.69)
 - open/close 3354 (time 1787854960.07 total 70.05 last 45.97)
 - open/close 3862 (time 1787854970.10 total 80.07 last 50.67)
 - open/close 4360 (time 1787854980.13 total 90.11 last 49.63)
 - open/close 4860 (time 1787854990.15 total 100.13 last 49.90)
total: 5000 open/close in 102.96 seconds: 48.56 ops/second
fail_loc=0x80000137
 - unlinked 0 (time 1787854996 ; total 0 ; last 0)
total: 5000 unlinks in 74 seconds: 67.567566 unlinks/second
fail_loc=0