== sanity test 184c: Concurrent write and layout swap ==== 11:51:48 (1761321108) 50+0 records in 50+0 records out 52428800 bytes (52 MB, 50 MiB) copied, 1.04518 s, 50.2 MB/s 55+0 records in 55+0 records out 57671680 bytes (58 MB, 55 MiB) copied, 1.15045 s, 50.1 MB/s ref file size: ref1(52428800), ref2(57671680) 3200+0 records in 3200+0 records out 52428800 bytes (52 MB, 50 MiB) copied, 1.25616 s, 41.7 MB/s Copied 6307840 bytes before swapping layout...