== sanity test 184c: Concurrent write and layout swap ==== 05:54:37 (1788688477) 35+0 records in 35+0 records out 36700160 bytes (37 MB, 35 MiB) copied, 5.71319 s, 6.4 MB/s 20+0 records in 20+0 records out 20971520 bytes (21 MB, 20 MiB) copied, 3.09783 s, 6.8 MB/s ref file size: ref1(36700160), ref2(20971520) 2240+0 records in 2240+0 records out 36700160 bytes (37 MB, 35 MiB) copied, 11.5226 s, 3.2 MB/s Copied 425984 bytes before swapping layout...