+.BI trim_percentage \fR=\fPint
+Number of verify blocks to discard/trim.
+.TP
+.BI trim_verify_zero \fR=\fPbool
+Verify that trim/discarded blocks are returned as zeroes.
+.TP
+.BI trim_backlog \fR=\fPint
+Trim after this number of blocks are written.
+.TP
+.BI trim_backlog_batch \fR=\fPint
+Trim this number of IO blocks.
+.TP
+.BI experimental_verify \fR=\fPbool
+Enable experimental verification.
+.TP