== sanity test 184c: Concurrent write and layout swap ==== 02:33:57 (1746081237) 53+0 records in 53+0 records out 55574528 bytes (56 MB) copied, 2.67839 s, 20.7 MB/s 37+0 records in 37+0 records out 38797312 bytes (39 MB) copied, 1.84261 s, 21.1 MB/s ref file size: ref1(55574528), ref2(38797312) 3392+0 records in 3392+0 records out 55574528 bytes (56 MB) copied, 5.396 s, 10.3 MB/s Copied 1327104 bytes before swapping layout...