== sanity test 184c: Concurrent write and layout swap ==== 18:35:32 (1743460532) 44+0 records in 44+0 records out 46137344 bytes (46 MB) copied, 1.52444 s, 30.3 MB/s 64+0 records in 64+0 records out 67108864 bytes (67 MB) copied, 2.26089 s, 29.7 MB/s ref file size: ref1(46137344), ref2(67108864) 2816+0 records in 2816+0 records out 46137344 bytes (46 MB) copied, 3.58594 s, 12.9 MB/s Copied 1753088 bytes before swapping layout...