== sanity test 184c: Concurrent write and layout swap ==== 08:20:49 (1787401249) 23+0 records in 23+0 records out 24117248 bytes (24 MB, 23 MiB) copied, 3.07255 s, 7.8 MB/s 35+0 records in 35+0 records out 36700160 bytes (37 MB, 35 MiB) copied, 4.55387 s, 8.1 MB/s ref file size: ref1(24117248), ref2(36700160) 1472+0 records in 1472+0 records out 24117248 bytes (24 MB, 23 MiB) copied, 6.52164 s, 3.7 MB/s Copied 688128 bytes before swapping layout...