== sanity test 184c: Concurrent write and layout swap ==== 00:57:08 (1775883428) 61+0 records in 61+0 records out 63963136 bytes (64 MB, 61 MiB) copied, 3.40032 s, 18.8 MB/s 42+0 records in 42+0 records out 44040192 bytes (44 MB, 42 MiB) copied, 2.41473 s, 18.2 MB/s ref file size: ref1(63963136), ref2(44040192) 3904+0 records in 3904+0 records out 63963136 bytes (64 MB, 61 MiB) copied, 6.10395 s, 10.5 MB/s Copied 1114112 bytes before swapping layout...