== sanity test 184c: Concurrent write and layout swap ==== 21:15:25 (1788484525) 38+0 records in 38+0 records out 39845888 bytes (40 MB, 38 MiB) copied, 5.62392 s, 7.1 MB/s 25+0 records in 25+0 records out 26214400 bytes (26 MB, 25 MiB) copied, 3.69452 s, 7.1 MB/s ref file size: ref1(39845888), ref2(26214400) 2432+0 records in 2432+0 records out 39845888 bytes (40 MB, 38 MiB) copied, 9.71853 s, 4.1 MB/s Copied 622592 bytes before swapping layout...