+.BI verify_async \fR=\fPint
+Fio will normally verify IO inline from the submitting thread. This option
+takes an integer describing how many async offload threads to create for IO
+verification instead, causing fio to offload the duty of verifying IO contents
+to one or more separate threads. If using this offload option, even sync IO
+engines can benefit from using an \fBiodepth\fR setting higher than 1, as it
+allows them to have IO in flight while verifies are running.
+.TP
+.BI verify_async_cpus \fR=\fPstr
+Tell fio to set the given CPU affinity on the async IO verification threads.
+See \fBcpus_allowed\fP for the format used.
+.TP