== sanity test 184c: Concurrent write and layout swap ==== 03:34:55 (1788852895) 65+0 records in 65+0 records out 68157440 bytes (68 MB, 65 MiB) copied, 10.042 s, 6.8 MB/s 26+0 records in 26+0 records out 27262976 bytes (27 MB, 26 MiB) copied, 3.35459 s, 8.1 MB/s ref file size: ref1(68157440), ref2(27262976) 4160+0 records in 4160+0 records out 68157440 bytes (68 MB, 65 MiB) copied, 27.444 s, 2.5 MB/s Copied 786432 bytes before swapping layout...