== sanity test 60c: unlink file when mds full ============ 22:39:32 (1789180772)
create 5000 files
 - open/close 508 (time 1789180787.88 total 10.01 last 50.76)
 - open/close 1022 (time 1789180797.89 total 20.02 last 51.35)
 - open/close 1528 (time 1789180807.92 total 30.04 last 50.47)
 - open/close 2057 (time 1789180817.92 total 40.04 last 52.89)
 - open/close 2636 (time 1789180827.93 total 50.05 last 57.84)
 - open/close 3122 (time 1789180837.95 total 60.08 last 48.47)
 - open/close 3603 (time 1789180847.97 total 70.09 last 48.03)
 - open/close 4053 (time 1789180857.98 total 80.10 last 44.96)
 - open/close 4510 (time 1789180867.98 total 90.10 last 45.70)
 - open/close 4958 (time 1789180877.99 total 100.12 last 44.74)
total: 5000 open/close in 101.40 seconds: 49.31 ops/second
fail_loc=0x80000137
 - unlinked 0 (time 1789180883 ; total 0 ; last 0)
total: 5000 unlinks in 71 seconds: 70.422539 unlinks/second
fail_loc=0