== sanity test 184c: Concurrent write and layout swap ==== 08:24:43 (1779711883) 23+0 records in 23+0 records out 24117248 bytes (24 MB, 23 MiB) copied, 4.09513 s, 5.9 MB/s 47+0 records in 47+0 records out 49283072 bytes (49 MB, 47 MiB) copied, 8.35377 s, 5.9 MB/s ref file size: ref1(24117248), ref2(49283072) 1472+0 records in 1472+0 records out 24117248 bytes (24 MB, 23 MiB) copied, 8.77042 s, 2.7 MB/s Copied 278528 bytes before swapping layout...