== sanity test 184c: Concurrent write and layout swap ==== 06:55:06 (1730807706) 41+0 records in 41+0 records out 42991616 bytes (43 MB) copied, 1.21021 s, 35.5 MB/s 61+0 records in 61+0 records out 63963136 bytes (64 MB) copied, 1.80088 s, 35.5 MB/s ref file size: ref1(42991616), ref2(63963136) 2624+0 records in 2624+0 records out 42991616 bytes (43 MB) copied, 2.7432 s, 15.7 MB/s Copied 2146304 bytes before swapping layout...