diff --git a/v2v/types.ml b/v2v/types.ml
index c47c3987a..1b4e57845 100644
--- a/v2v/types.ml
+++ b/v2v/types.ml
@@ -379,19 +379,6 @@ i_windows_current_control_set = %s
   inspect.i_windows_system_hive
   inspect.i_windows_current_control_set
 
-type mpstat = {
-  mp_dev : string;
-  mp_path : string;
-  mp_statvfs : Guestfs.statvfs;
-  mp_vfs : string;
-}
-
-let print_mpstat chan { mp_dev = dev; mp_path = path;
-                        mp_statvfs = s; mp_vfs = vfs } =
-  fprintf chan "mountpoint statvfs %s %s (%s):\n" dev path vfs;
-  fprintf chan "  bsize=%Ld blocks=%Ld bfree=%Ld bavail=%Ld\n"
-    s.Guestfs.bsize s.Guestfs.blocks s.Guestfs.bfree s.Guestfs.bavail
-
 type guestcaps = {
   gcaps_block_bus : guestcaps_block_type;
   gcaps_net_bus : guestcaps_net_type;
diff --git a/v2v/types.mli b/v2v/types.mli
index 1aea8af00..51ea09f62 100644
--- a/v2v/types.mli
+++ b/v2v/types.mli
@@ -205,7 +205,7 @@ type target = {
 
 val string_of_target : target -> string
 
-(** {2 Other data structures} *)
+(** {2 Guest firmware} *)
 
 type target_firmware = TargetBIOS | TargetUEFI
 
@@ -215,44 +215,7 @@ type i_firmware =
   | I_BIOS
   | I_UEFI of string list
 
-type inspect = {
-  i_root : string;                      (** Root device. *)
-  i_type : string;                      (** Usual inspection fields. *)
-  i_distro : string;
-  i_arch : string;
-  i_major_version : int;
-  i_minor_version : int;
-  i_package_format : string;
-  i_package_management : string;
-  i_product_name : string;
-  i_product_variant : string;
-  i_mountpoints : (string * string) list;
-  i_apps : Guestfs.application2 list;   (** List of packages installed. *)
-  i_apps_map : Guestfs.application2 list StringMap.t;
-    (** This is a map from the app name to the application object.
-        Since RPM allows multiple packages with the same name to be
-        installed, the value is a list. *)
-  i_firmware : i_firmware;
-    (** The list of EFI system partitions for the guest with UEFI,
-        otherwise the BIOS identifier. *)
-  i_windows_systemroot : string;
-  i_windows_software_hive : string;
-  i_windows_system_hive : string;
-  i_windows_current_control_set : string;
-}
-(** Inspection information. *)
-
-val string_of_inspect : inspect -> string
-
-type mpstat = {
-  mp_dev : string;                      (** Filesystem device (eg. /dev/sda1) *)
-  mp_path : string;                     (** Guest mountpoint (eg. /boot) *)
-  mp_statvfs : Guestfs.statvfs;         (** Free space stats. *)
-  mp_vfs : string;                      (** VFS type (eg. "ext4") *)
-}
-(** Mountpoint stats, used for free space estimation. *)
-
-val print_mpstat : out_channel -> mpstat -> unit
+(** {2 Guest capabilities} *)
 
 type guestcaps = {
   gcaps_block_bus : guestcaps_block_type;
@@ -289,6 +252,8 @@ and guestcaps_video_type = QXL | Cirrus
 val string_of_guestcaps : guestcaps -> string
 val string_of_requested_guestcaps : requested_guestcaps -> string
 
+(** {2 Guest buses} *)
+
 type target_buses = {
   target_virtio_blk_bus : target_bus_slot array;
   target_ide_bus : target_bus_slot array;
@@ -331,6 +296,39 @@ and target_bus_slot =
 
 val string_of_target_buses : target_buses -> string
 
+(** {2 Inspection data} *)
+
+type inspect = {
+  i_root : string;                      (** Root device. *)
+  i_type : string;                      (** Usual inspection fields. *)
+  i_distro : string;
+  i_arch : string;
+  i_major_version : int;
+  i_minor_version : int;
+  i_package_format : string;
+  i_package_management : string;
+  i_product_name : string;
+  i_product_variant : string;
+  i_mountpoints : (string * string) list;
+  i_apps : Guestfs.application2 list;   (** List of packages installed. *)
+  i_apps_map : Guestfs.application2 list StringMap.t;
+    (** This is a map from the app name to the application object.
+        Since RPM allows multiple packages with the same name to be
+        installed, the value is a list. *)
+  i_firmware : i_firmware;
+    (** The list of EFI system partitions for the guest with UEFI,
+        otherwise the BIOS identifier. *)
+  i_windows_systemroot : string;
+  i_windows_software_hive : string;
+  i_windows_system_hive : string;
+  i_windows_current_control_set : string;
+}
+(** Inspection information. *)
+
+val string_of_inspect : inspect -> string
+
+(** {2 Command line parameters} *)
+
 type root_choice = AskRoot | SingleRoot | FirstRoot | RootDev of string
 (** Type of [--root] (root choice) option. *)
 
diff --git a/v2v/v2v.ml b/v2v/v2v.ml
index 9d40f3578..74ba66a3d 100644
--- a/v2v/v2v.ml
+++ b/v2v/v2v.ml
@@ -32,9 +32,18 @@ open Cmdline
 
 module G = Guestfs
 
+(* Conversion mode, either normal (copying) or [--in-place]. *)
 type conversion_mode =
-    | Copying of overlay list * target list
-    | In_place
+  | Copying of overlay list * target list
+  | In_place
+
+(* Mountpoint stats, used for free space estimation. *)
+type mpstat = {
+  mp_dev : string;                      (* Filesystem device (eg. /dev/sda1) *)
+  mp_path : string;                     (* Guest mountpoint (eg. /boot) *)
+  mp_statvfs : Guestfs.statvfs;         (* Free space stats. *)
+  mp_vfs : string;                      (* VFS type (eg. "ext4") *)
+}
 
 let () = Random.self_init ()
 
@@ -390,6 +399,12 @@ and get_mpstats g =
 
   mpstats
 
+and print_mpstat chan { mp_dev = dev; mp_path = path;
+                        mp_statvfs = s; mp_vfs = vfs } =
+  fprintf chan "mountpoint statvfs %s %s (%s):\n" dev path vfs;
+  fprintf chan "  bsize=%Ld blocks=%Ld bfree=%Ld bavail=%Ld\n"
+    s.Guestfs.bsize s.Guestfs.blocks s.Guestfs.bfree s.Guestfs.bavail
+
 (* Conversion can fail if there is no space on the guest filesystems
  * (RHBZ#1139543).  To avoid this situation, check there is some
  * headroom.  Mainly we care about the root filesystem.