== sanity test 184c: Concurrent write and layout swap ==== 16:52:50 (1761252770) 38+0 records in 38+0 records out 39845888 bytes (40 MB, 38 MiB) copied, 1.9062 s, 20.9 MB/s 59+0 records in 59+0 records out 61865984 bytes (62 MB, 59 MiB) copied, 3.28873 s, 18.8 MB/s ref file size: ref1(39845888), ref2(61865984) 2432+0 records in 2432+0 records out 39845888 bytes (40 MB, 38 MiB) copied, 2.28795 s, 17.4 MB/s Copied 2490368 bytes before swapping layout...