== sanity test 184c: Concurrent write and layout swap ==== 04:02:37 (1788854557) 52+0 records in 52+0 records out 54525952 bytes (55 MB, 52 MiB) copied, 3.51961 s, 15.5 MB/s 61+0 records in 61+0 records out 63963136 bytes (64 MB, 61 MiB) copied, 4.25944 s, 15.0 MB/s ref file size: ref1(54525952), ref2(63963136) 3328+0 records in 3328+0 records out 54525952 bytes (55 MB, 52 MiB) copied, 6.14861 s, 8.9 MB/s Copied 1179648 bytes before swapping layout...