== sanity test 60c: unlink file when mds full ============ 09:31:55 (1788528715)
create 5000 files
 - open/close 512 (time 1788528730.11 total 10.01 last 51.15)
 - open/close 1000 (time 1788528740.12 total 20.02 last 48.76)
 - open/close 1455 (time 1788528750.15 total 30.05 last 45.37)
 - open/close 1947 (time 1788528760.16 total 40.06 last 49.13)
 - open/close 2424 (time 1788528770.17 total 50.07 last 47.65)
 - open/close 2927 (time 1788528780.17 total 60.07 last 50.28)
 - open/close 3470 (time 1788528790.18 total 70.08 last 54.26)
 - open/close 4016 (time 1788528800.20 total 80.10 last 54.50)
 - open/close 4523 (time 1788528810.21 total 90.11 last 50.65)
 - open/close 4937 (time 1788528820.22 total 100.12 last 41.35)
total: 5000 open/close in 101.91 seconds: 49.06 ops/second
fail_loc=0x80000137
 - unlinked 0 (time 1788528827 ; total 0 ; last 0)
total: 5000 unlinks in 76 seconds: 65.789474 unlinks/second
fail_loc=0