== sanity test 184c: Concurrent write and layout swap ==== 05:06:13 (1769767573) 65+0 records in 65+0 records out 68157440 bytes (68 MB, 65 MiB) copied, 4.47592 s, 15.2 MB/s 52+0 records in 52+0 records out 54525952 bytes (55 MB, 52 MiB) copied, 3.68127 s, 14.8 MB/s ref file size: ref1(68157440), ref2(54525952) 4160+0 records in 4160+0 records out 68157440 bytes (68 MB, 65 MiB) copied, 7.84922 s, 8.7 MB/s Copied 1114112 bytes before swapping layout...