== sanity test 184c: Concurrent write and layout swap ==== 14:57:10 (1741633030) 20+0 records in 20+0 records out 20971520 bytes (21 MB) copied, 0.987327 s, 21.2 MB/s 29+0 records in 29+0 records out 30408704 bytes (30 MB) copied, 1.47639 s, 20.6 MB/s ref file size: ref1(20971520), ref2(30408704) 1280+0 records in 1280+0 records out 20971520 bytes (21 MB) copied, 2.22787 s, 9.4 MB/s Copied 1277952 bytes before swapping layout...