+.BI verify_backlog \fR=\fPint
+Fio will normally verify the written contents of a job that utilizes verify
+once that job has completed. In other words, everything is written then
+everything is read back and verified. You may want to verify continually
+instead for a variety of reasons. Fio stores the meta data associated with an
+IO block in memory, so for large verify workloads, quite a bit of memory would
+be used up holding this meta data. If this option is enabled, fio will verify
+the previously written blocks before continuing to write new ones.
+.TP
+.BI verify_backlog_batch \fR=\fPint
+Control how many blocks fio will verify if verify_backlog is set. If not set,
+will default to the value of \fBverify_backlog\fR (meaning the entire queue is
+read back and verified).
+.TP