== sanity test 184c: Concurrent write and layout swap ==== 09:38:12 (1743514692) 35+0 records in 35+0 records out 36700160 bytes (37 MB) copied, 1.02348 s, 35.9 MB/s 42+0 records in 42+0 records out 44040192 bytes (44 MB) copied, 1.22605 s, 35.9 MB/s ref file size: ref1(36700160), ref2(44040192) 2240+0 records in 2240+0 records out 36700160 bytes (37 MB) copied, 2.19963 s, 16.7 MB/s Copied 2048000 bytes before swapping layout...