== sanity test 184c: Concurrent write and layout swap ==== 10:04:06 (1724767446) 58+0 records in 58+0 records out 60817408 bytes (61 MB) copied, 1.84204 s, 33.0 MB/s 51+0 records in 51+0 records out 53477376 bytes (53 MB) copied, 1.68469 s, 31.7 MB/s ref file size: ref1(60817408), ref2(53477376) 3712+0 records in 3712+0 records out 60817408 bytes (61 MB) copied, 4.08189 s, 14.9 MB/s Copied 1720320 bytes before swapping layout...