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[lvm-devel][PATCH 4/4] Add man page entry for dmsetup udevflags



diff --git a/man/dmsetup.8.in b/man/dmsetup.8.in
index 934372e..25cb857 100644
--- a/man/dmsetup.8.in
+++ b/man/dmsetup.8.in
@@ -64,6 +64,9 @@ dmsetup \- low level logical volume management
 .B dmsetup mknodes
 .I [device_name]
 .br
+.B dmsetup udevflags
+.I cookie
+.br
 .B dmsetup udevcomplete
 .I cookie
 .br
@@ -303,6 +306,18 @@ is displayed.
 .IP \fBtargets
 .br
 Displays the names and versions of the currently-loaded targets.
+.br
+.IP \fBudevflags
+.I cookie
+.br
+Parses given cookie value and extracts any udev control flags encoded.
+The output is in environment key format that is suitable for use in udev
+rules. If the flag has its symbolic name assigned then the ouput is
+DM_UDEV_FLAG_<flag_name>='1', DM_UDEV_FLAG_<flag_position>='1' otherwise.
+Subsystem udev flags don't have symbolic names assigned and these ones are
+always reported as DM_SUBSYSTEM_UDEV_FLAG_<flag_position>='1'. There are
+16 udev flags altogether.
+.br
 .IP \fBudevcomplete
 .I cookie
 .br


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