== sanity test 184c: Concurrent write and layout swap ==== 06:31:54 (1788863514) 55+0 records in 55+0 records out 57671680 bytes (58 MB, 55 MiB) copied, 8.4079 s, 6.9 MB/s 63+0 records in 63+0 records out 66060288 bytes (66 MB, 63 MiB) copied, 9.00619 s, 7.3 MB/s ref file size: ref1(57671680), ref2(66060288) 3520+0 records in 3520+0 records out 57671680 bytes (58 MB, 55 MiB) copied, 17.7219 s, 3.3 MB/s Copied 458752 bytes before swapping layout...