== sanity test 184c: Concurrent write and layout swap ==== 12:45:02 (1790700302) 23+0 records in 23+0 records out 24117248 bytes (24 MB, 23 MiB) copied, 2.59402 s, 9.3 MB/s 44+0 records in 44+0 records out 46137344 bytes (46 MB, 44 MiB) copied, 4.81169 s, 9.6 MB/s ref file size: ref1(24117248), ref2(46137344) 1472+0 records in 1472+0 records out 24117248 bytes (24 MB, 23 MiB) copied, 4.96067 s, 4.9 MB/s Copied 491520 bytes before swapping layout...