== sanity test 184c: Concurrent write and layout swap ==== 17:59:53 (1787867993) 21+0 records in 21+0 records out 22020096 bytes (22 MB, 21 MiB) copied, 3.21566 s, 6.8 MB/s 46+0 records in 46+0 records out 48234496 bytes (48 MB, 46 MiB) copied, 7.21256 s, 6.7 MB/s ref file size: ref1(22020096), ref2(48234496) 1344+0 records in 1344+0 records out 22020096 bytes (22 MB, 21 MiB) copied, 6.34383 s, 3.5 MB/s Copied 491520 bytes before swapping layout...