== sanity test 184c: Concurrent write and layout swap ==== 00:40:26 (1787892026) 49+0 records in 49+0 records out 51380224 bytes (51 MB, 49 MiB) copied, 7.21157 s, 7.1 MB/s 52+0 records in 52+0 records out 54525952 bytes (55 MB, 52 MiB) copied, 7.67213 s, 7.1 MB/s ref file size: ref1(51380224), ref2(54525952) 3136+0 records in 3136+0 records out 51380224 bytes (51 MB, 49 MiB) copied, 17.9186 s, 2.9 MB/s Copied 278528 bytes before swapping layout...