== sanity test 184c: Concurrent write and layout swap ==== 05:36:35 (1786095395) 29+0 records in 29+0 records out 30408704 bytes (30 MB, 29 MiB) copied, 3.49905 s, 8.7 MB/s 37+0 records in 37+0 records out 38797312 bytes (39 MB, 37 MiB) copied, 5.21607 s, 7.4 MB/s ref file size: ref1(30408704), ref2(38797312) 1856+0 records in 1856+0 records out 30408704 bytes (30 MB, 29 MiB) copied, 8.61701 s, 3.5 MB/s Copied 688128 bytes before swapping layout...