== sanity test 60c: unlink file when mds full ============ 20:22:21 (1773102141)
create 5000 files
 - open/close 597 (time 1773102154.13 total 10.01 last 59.67)
 - open/close 1188 (time 1773102164.13 total 20.01 last 59.07)
 - open/close 1789 (time 1773102174.14 total 30.02 last 60.05)
 - open/close 2367 (time 1773102184.15 total 40.03 last 57.76)
 - open/close 2881 (time 1773102194.16 total 50.04 last 51.35)
 - open/close 3358 (time 1773102204.17 total 60.05 last 47.64)
 - open/close 3880 (time 1773102214.18 total 70.06 last 52.13)
 - open/close 4465 (time 1773102224.18 total 80.06 last 58.50)
 - open/close 4972 (time 1773102234.19 total 90.07 last 50.69)
total: 5000 open/close in 90.81 seconds: 55.06 ops/second
fail_loc=0x80000137
 - unlinked 0 (time 1773102238 ; total 0 ; last 0)
total: 5000 unlinks in 64 seconds: 78.125000 unlinks/second
fail_loc=0