== sanity test 184c: Concurrent write and layout swap ==== 00:26:01 (1747801561) 39+0 records in 39+0 records out 40894464 bytes (41 MB) copied, 1.25234 s, 32.7 MB/s 55+0 records in 55+0 records out 57671680 bytes (58 MB) copied, 1.65642 s, 34.8 MB/s ref file size: ref1(40894464), ref2(57671680) 2496+0 records in 2496+0 records out 40894464 bytes (41 MB) copied, 2.88217 s, 14.2 MB/s Copied 1933312 bytes before swapping layout...