== sanity test 184c: Concurrent write and layout swap ==== 16:42:30 (1788900150) 55+0 records in 55+0 records out 57671680 bytes (58 MB, 55 MiB) copied, 4.20274 s, 13.7 MB/s 36+0 records in 36+0 records out 37748736 bytes (38 MB, 36 MiB) copied, 3.19852 s, 11.8 MB/s ref file size: ref1(57671680), ref2(37748736) 3520+0 records in 3520+0 records out 57671680 bytes (58 MB, 55 MiB) copied, 17.2154 s, 3.4 MB/s Copied 786432 bytes before swapping layout...