== sanity test 184c: Concurrent write and layout swap ==== 02:31:09 (1790749869) 20+0 records in 20+0 records out 20971520 bytes (21 MB, 20 MiB) copied, 2.56506 s, 8.2 MB/s 59+0 records in 59+0 records out 61865984 bytes (62 MB, 59 MiB) copied, 10.4625 s, 5.9 MB/s ref file size: ref1(20971520), ref2(61865984) 1280+0 records in 1280+0 records out 20971520 bytes (21 MB, 20 MiB) copied, 6.27259 s, 3.3 MB/s Copied 507904 bytes before swapping layout...