== sanity test 184c: Concurrent write and layout swap ==== 04:48:27 (1781254107) 35+0 records in 35+0 records out 36700160 bytes (37 MB, 35 MiB) copied, 4.40086 s, 8.3 MB/s 44+0 records in 44+0 records out 46137344 bytes (46 MB, 44 MiB) copied, 8.31904 s, 5.5 MB/s ref file size: ref1(36700160), ref2(46137344) 2240+0 records in 2240+0 records out 36700160 bytes (37 MB, 35 MiB) copied, 10.7272 s, 3.4 MB/s Copied 606208 bytes before swapping layout...