== sanity test 184c: Concurrent write and layout swap ==== 11:54:33 (1749484473) 28+0 records in 28+0 records out 29360128 bytes (29 MB) copied, 0.895963 s, 32.8 MB/s 60+0 records in 60+0 records out 62914560 bytes (63 MB) copied, 1.76586 s, 35.6 MB/s ref file size: ref1(29360128), ref2(62914560) 1792+0 records in 1792+0 records out 29360128 bytes (29 MB) copied, 2.10939 s, 13.9 MB/s Copied 1867776 bytes before swapping layout...