== sanity test 184c: Concurrent write and layout swap ==== 07:51:43 (1786362703) 27+0 records in 27+0 records out 28311552 bytes (28 MB, 27 MiB) copied, 1.55981 s, 18.2 MB/s 35+0 records in 35+0 records out 36700160 bytes (37 MB, 35 MiB) copied, 2.07895 s, 17.7 MB/s ref file size: ref1(28311552), ref2(36700160) 1728+0 records in 1728+0 records out 28311552 bytes (28 MB, 27 MiB) copied, 2.77634 s, 10.2 MB/s Copied 1114112 bytes before swapping layout...