== sanity test 184c: Concurrent write and layout swap ==== 02:08:16 (1763363296) 35+0 records in 35+0 records out 36700160 bytes (37 MB, 35 MiB) copied, 2.11094 s, 17.4 MB/s 41+0 records in 41+0 records out 42991616 bytes (43 MB, 41 MiB) copied, 2.69777 s, 15.9 MB/s ref file size: ref1(36700160), ref2(42991616) 2240+0 records in 2240+0 records out 36700160 bytes (37 MB, 35 MiB) copied, 3.75101 s, 9.8 MB/s Copied 1114112 bytes before swapping layout...