== sanity test 184c: Concurrent write and layout swap ==== 21:35:54 (1746149754) 55+0 records in 55+0 records out 57671680 bytes (58 MB) copied, 2.89952 s, 19.9 MB/s 38+0 records in 38+0 records out 39845888 bytes (40 MB) copied, 1.9355 s, 20.6 MB/s ref file size: ref1(57671680), ref2(39845888) 3520+0 records in 3520+0 records out 57671680 bytes (58 MB) copied, 5.67798 s, 10.2 MB/s Copied 1474560 bytes before swapping layout...