== sanity test 184c: Concurrent write and layout swap ==== 02:59:24 (1783148364) 31+0 records in 31+0 records out 32505856 bytes (33 MB, 31 MiB) copied, 4.29054 s, 7.6 MB/s 25+0 records in 25+0 records out 26214400 bytes (26 MB, 25 MiB) copied, 3.53092 s, 7.4 MB/s ref file size: ref1(32505856), ref2(26214400) 1984+0 records in 1984+0 records out 32505856 bytes (33 MB, 31 MiB) copied, 9.08534 s, 3.6 MB/s Copied 491520 bytes before swapping layout...