== sanity test 184c: Concurrent write and layout swap ==== 20:33:14 (1779323594) 35+0 records in 35+0 records out 36700160 bytes (37 MB, 35 MiB) copied, 1.7175 s, 21.4 MB/s 55+0 records in 55+0 records out 57671680 bytes (58 MB, 55 MiB) copied, 2.7407 s, 21.0 MB/s ref file size: ref1(36700160), ref2(57671680) 2240+0 records in 2240+0 records out 36700160 bytes (37 MB, 35 MiB) copied, 3.15736 s, 11.6 MB/s Copied 1392640 bytes before swapping layout...