== sanity test 184c: Concurrent write and layout swap ==== 00:13:11 (1787890391) 61+0 records in 61+0 records out 63963136 bytes (64 MB, 61 MiB) copied, 8.67118 s, 7.4 MB/s 36+0 records in 36+0 records out 37748736 bytes (38 MB, 36 MiB) copied, 5.56939 s, 6.8 MB/s ref file size: ref1(63963136), ref2(37748736) 3904+0 records in 3904+0 records out 63963136 bytes (64 MB, 61 MiB) copied, 16.7595 s, 3.8 MB/s Copied 884736 bytes before swapping layout...