== sanity test 60c: unlink file when mds full ============ 19:52:12 (1788652332)
create 5000 files
 - open/close 512 (time 1788652345.99 total 10.04 last 51.01)
 - open/close 1011 (time 1788652355.99 total 20.04 last 49.89)
 - open/close 1537 (time 1788652366.00 total 30.05 last 52.54)
 - open/close 1990 (time 1788652376.02 total 40.06 last 45.24)
 - open/close 2376 (time 1788652386.04 total 50.09 last 38.52)
 - open/close 2761 (time 1788652396.05 total 60.10 last 38.46)
 - open/close 3203 (time 1788652406.05 total 70.10 last 44.18)
 - open/close 3704 (time 1788652416.06 total 80.10 last 50.07)
 - open/close 4184 (time 1788652426.07 total 90.11 last 47.95)
 - open/close 4633 (time 1788652436.08 total 100.13 last 44.85)
total: 5000 open/close in 107.30 seconds: 46.60 ops/second
fail_loc=0x80000137
 - unlinked 0 (time 1788652447 ; total 0 ; last 0)
total: 5000 unlinks in 80 seconds: 62.500000 unlinks/second
fail_loc=0