== sanity test 184c: Concurrent write and layout swap ==== 11:46:51 (1788364011) 23+0 records in 23+0 records out 24117248 bytes (24 MB, 23 MiB) copied, 1.71587 s, 14.1 MB/s 42+0 records in 42+0 records out 44040192 bytes (44 MB, 42 MiB) copied, 3.36954 s, 13.1 MB/s ref file size: ref1(24117248), ref2(44040192) 1472+0 records in 1472+0 records out 24117248 bytes (24 MB, 23 MiB) copied, 3.22826 s, 7.5 MB/s Copied 1081344 bytes before swapping layout...