== sanity test 60c: unlink file when mds full ============ 10:49:58 (1779202198)
create 5000 files
 - open/close 501 (time 1779202213.17 total 10.01 last 50.04)
 - open/close 1006 (time 1779202223.17 total 20.02 last 50.47)
 - open/close 1543 (time 1779202233.19 total 30.03 last 53.61)
 - open/close 2074 (time 1779202243.20 total 40.04 last 53.07)
 - open/close 2586 (time 1779202253.23 total 50.07 last 51.03)
 - open/close 3074 (time 1779202263.24 total 60.08 last 48.75)
 - open/close 3571 (time 1779202273.25 total 70.10 last 49.63)
 - open/close 3999 (time 1779202283.29 total 80.13 last 42.65)
 - open/close 4306 (time 1779202293.30 total 90.14 last 30.67)
 - open/close 4658 (time 1779202303.32 total 100.16 last 35.12)
total: 5000 open/close in 107.25 seconds: 46.62 ops/second
fail_loc=0x80000137
 - unlinked 0 (time 1779202315 ; total 1 ; last 1)
total: 5000 unlinks in 76 seconds: 65.789474 unlinks/second
fail_loc=0