== sanity test 184c: Concurrent write and layout swap ==== 09:42:21 (1747402941) 55+0 records in 55+0 records out 57671680 bytes (58 MB) copied, 0.699721 s, 82.4 MB/s 59+0 records in 59+0 records out 61865984 bytes (62 MB) copied, 0.697181 s, 88.7 MB/s ref file size: ref1(57671680), ref2(61865984) 3520+0 records in 3520+0 records out 57671680 bytes (58 MB) copied, 0.689942 s, 83.6 MB/s Copied 7602176 bytes before swapping layout...