== sanity test 184c: Concurrent write and layout swap ==== 14:04:44 (1744135484) 55+0 records in 55+0 records out 57671680 bytes (58 MB) copied, 1.69386 s, 34.0 MB/s 64+0 records in 64+0 records out 67108864 bytes (67 MB) copied, 2.16893 s, 30.9 MB/s ref file size: ref1(57671680), ref2(67108864) 3520+0 records in 3520+0 records out 57671680 bytes (58 MB) copied, 3.92694 s, 14.7 MB/s Copied 1867776 bytes before swapping layout...