== sanity test 184c: Concurrent write and layout swap ==== 13:01:45 (1758819705) 35+0 records in 35+0 records out 36700160 bytes (37 MB, 35 MiB) copied, 1.95468 s, 18.8 MB/s 33+0 records in 33+0 records out 34603008 bytes (35 MB, 33 MiB) copied, 1.71638 s, 20.2 MB/s ref file size: ref1(36700160), ref2(34603008) 2240+0 records in 2240+0 records out 36700160 bytes (37 MB, 35 MiB) copied, 4.07123 s, 9.0 MB/s Copied 1327104 bytes before swapping layout...