== sanity test 184c: Concurrent write and layout swap ==== 03:16:43 (1787210203) 32+0 records in 32+0 records out 33554432 bytes (34 MB, 32 MiB) copied, 5.60529 s, 6.0 MB/s 54+0 records in 54+0 records out 56623104 bytes (57 MB, 54 MiB) copied, 7.70145 s, 7.4 MB/s ref file size: ref1(33554432), ref2(56623104) 2048+0 records in 2048+0 records out 33554432 bytes (34 MB, 32 MiB) copied, 10.2669 s, 3.3 MB/s Copied 868352 bytes before swapping layout...