== sanity test 184c: Concurrent write and layout swap ==== 21:50:31 (1790992231) 35+0 records in 35+0 records out 36700160 bytes (37 MB, 35 MiB) copied, 2.53347 s, 14.5 MB/s 27+0 records in 27+0 records out 28311552 bytes (28 MB, 27 MiB) copied, 2.07935 s, 13.6 MB/s ref file size: ref1(36700160), ref2(28311552) 2240+0 records in 2240+0 records out 36700160 bytes (37 MB, 35 MiB) copied, 4.58988 s, 8.0 MB/s Copied 1212416 bytes before swapping layout...