== sanity test 184c: Concurrent write and layout swap ==== 08:34:58 (1773232498) 23+0 records in 23+0 records out 24117248 bytes (24 MB, 23 MiB) copied, 1.43786 s, 16.8 MB/s 57+0 records in 57+0 records out 59768832 bytes (60 MB, 57 MiB) copied, 3.93782 s, 15.2 MB/s ref file size: ref1(24117248), ref2(59768832) 1472+0 records in 1472+0 records out 24117248 bytes (24 MB, 23 MiB) copied, 2.6054 s, 9.3 MB/s Copied 1277952 bytes before swapping layout...