lvmdump.8.in: describe lvmpolld related option

man/lvmdump.8.in

@@ -10,6 +10,7 @@ lvmdump \(em create lvm2 information dumps for diagnostic purposes
 .RB [ \-h ]
 .RB [ \-l ]
 .RB [ \-m ]
+.RB [ \-p ]
 .RB [ \-s ]
 .RB [ \-u ]
 .SH DESCRIPTION
@@ -41,6 +42,8 @@ The content of the tarball is as follows:
 .br
 - if enabled with \-l, lvmetad state if running
 .br
+- if enabled with \-p, lvmpolld state if running
+.br
 - if enabled with \-s, system info and context
 .br
 - if enabled with \-u, udev info and context
@@ -75,6 +78,12 @@ This option generates a 1:1 dump of the metadata area from all PVs visible
 to the system, which can cause the dump to increase in size considerably.
 However, the metadata dump may represent a valuable diagnostic resource.
 .TP
+.B \-p
+Include \fBlvmpolld\fP(8) daemon dump if it is running. The dump contains
+all in-progress operation currently monitored by the daemon and partial
+history for all yet uncollected results of polling operations already finished
+including reason.
+.TP
 .B \-s
 Gather system info and context. Currently, this encompasses systemd info
 and context only: overall state of systemd units present in the system,