== sanity test 184c: Concurrent write and layout swap ==== 15:49:09 (1787860149) 31+0 records in 31+0 records out 32505856 bytes (33 MB, 31 MiB) copied, 4.672 s, 7.0 MB/s 35+0 records in 35+0 records out 36700160 bytes (37 MB, 35 MiB) copied, 7.84717 s, 4.7 MB/s ref file size: ref1(32505856), ref2(36700160) 1984+0 records in 1984+0 records out 32505856 bytes (33 MB, 31 MiB) copied, 7.02219 s, 4.6 MB/s Copied 557056 bytes before swapping layout...