== sanity test 184c: Concurrent write and layout swap ==== 02:53:53 (1746082433) 55+0 records in 55+0 records out 57671680 bytes (58 MB) copied, 3.157 s, 18.3 MB/s 68+0 records in 68+0 records out 71303168 bytes (71 MB) copied, 3.37737 s, 21.1 MB/s ref file size: ref1(57671680), ref2(71303168) 3520+0 records in 3520+0 records out 57671680 bytes (58 MB) copied, 5.16654 s, 11.2 MB/s Copied 1540096 bytes before swapping layout...