== sanity test 184c: Concurrent write and layout swap ==== 06:33:50 (1721385230) 33+0 records in 33+0 records out 34603008 bytes (35 MB) copied, 0.483171 s, 71.6 MB/s 33+0 records in 33+0 records out 34603008 bytes (35 MB) copied, 0.472501 s, 73.2 MB/s ref file size: ref1(34603008), ref2(34603008) 2112+0 records in 2112+0 records out 34603008 bytes (35 MB) copied, 0.448946 s, 77.1 MB/s Copied 8716288 bytes before swapping layout...