== sanity test 184c: Concurrent write and layout swap ==== 17:33:47 (1788212027) 55+0 records in 55+0 records out 57671680 bytes (58 MB, 55 MiB) copied, 7.74743 s, 7.4 MB/s 25+0 records in 25+0 records out 26214400 bytes (26 MB, 25 MiB) copied, 3.30922 s, 7.9 MB/s ref file size: ref1(57671680), ref2(26214400) 3520+0 records in 3520+0 records out 57671680 bytes (58 MB, 55 MiB) copied, 20.3493 s, 2.8 MB/s Copied 753664 bytes before swapping layout...