== sanity test 184c: Concurrent write and layout swap ==== 01:41:10 (1789623670) 48+0 records in 48+0 records out 50331648 bytes (50 MB, 48 MiB) copied, 3.44577 s, 14.6 MB/s 51+0 records in 51+0 records out 53477376 bytes (53 MB, 51 MiB) copied, 3.61528 s, 14.8 MB/s ref file size: ref1(50331648), ref2(53477376) 3072+0 records in 3072+0 records out 50331648 bytes (50 MB, 48 MiB) copied, 5.96694 s, 8.4 MB/s Copied 1179648 bytes before swapping layout...