== sanity test 184c: Concurrent write and layout swap ==== 18:08:29 (1776204509) 68+0 records in 68+0 records out 71303168 bytes (71 MB, 68 MiB) copied, 2.90502 s, 24.5 MB/s 31+0 records in 31+0 records out 32505856 bytes (33 MB, 31 MiB) copied, 1.27801 s, 25.4 MB/s ref file size: ref1(71303168), ref2(32505856) 4352+0 records in 4352+0 records out 71303168 bytes (71 MB, 68 MiB) copied, 4.83804 s, 14.7 MB/s Copied 1376256 bytes before swapping layout...