== sanity test 184c: Concurrent write and layout swap ==== 04:57:14 (1788857834) 35+0 records in 35+0 records out 36700160 bytes (37 MB, 35 MiB) copied, 6.44412 s, 5.7 MB/s 54+0 records in 54+0 records out 56623104 bytes (57 MB, 54 MiB) copied, 7.9006 s, 7.2 MB/s ref file size: ref1(36700160), ref2(56623104) 2240+0 records in 2240+0 records out 36700160 bytes (37 MB, 35 MiB) copied, 12.1377 s, 3.0 MB/s Copied 606208 bytes before swapping layout...