== sanity test 184c: Concurrent write and layout swap ==== 23:57:14 (1767329834) 35+0 records in 35+0 records out 36700160 bytes (37 MB, 35 MiB) copied, 1.97468 s, 18.6 MB/s 57+0 records in 57+0 records out 59768832 bytes (60 MB, 57 MiB) copied, 3.09851 s, 19.3 MB/s ref file size: ref1(36700160), ref2(59768832) 2240+0 records in 2240+0 records out 36700160 bytes (37 MB, 35 MiB) copied, 3.28016 s, 11.2 MB/s Copied 1605632 bytes before swapping layout...