== sanity test 184c: Concurrent write and layout swap ==== 08:38:58 (1789994338) 64+0 records in 64+0 records out 67108864 bytes (67 MB, 64 MiB) copied, 4.16045 s, 16.1 MB/s 52+0 records in 52+0 records out 54525952 bytes (55 MB, 52 MiB) copied, 2.88179 s, 18.9 MB/s ref file size: ref1(67108864), ref2(54525952) 4096+0 records in 4096+0 records out 67108864 bytes (67 MB, 64 MiB) copied, 5.61225 s, 12.0 MB/s Copied 1490944 bytes before swapping layout...