X-Git-Url: http://git.annexia.org/?a=blobdiff_plain;f=virt-p2v;h=ffaf82427f2fce0a6b3ab8a46f2b9d5dd287c32d;hb=fab590ecd0f958490c158ab6e8f8059b6c6e6b5c;hp=310636334e10c6b9ce8fe14f30a7e162127c1f22;hpb=0ee27d11c8bceaf936da412ecec40c7a6879dd83;p=virt-p2v.git

diff --git a/virt-p2v b/virt-p2v
index 3106363..ffaf824 100755
--- a/virt-p2v
+++ b/virt-p2v
@@ -21,13 +21,13 @@
  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  *)
 
-type partition =
-  | Part of string * string		(* eg. "hda", "1" *)
-  | LV of string * string	        (* eg. "VolGroup00", "LogVol00" *)
 type transfer =
   | P2V					(* physical to virtual *)
   | V2V					(* virtual to virtual *)
   (*| V2P*)                             (* virtual to physical - not impl *)
+type partition =
+  | Part of string * string		(* eg. "hda", "1" *)
+  | LV of string * string	        (* eg. "VolGroup00", "LogVol00" *)
 type network =
   | Auto of partition			(* Automatic network configuration. *)
   | Shell				(* Start a shell. *)
@@ -51,8 +51,6 @@ type architecture =
   | I386 | X86_64 | IA64 | PPC | PPC64 | SPARC | SPARC64
   | OtherArch of string
   | UnknownArch
-type wordsize =
-  | W32 | W64 | WUnknown
 type target_config = {
   tgt_hypervisor : hypervisor option;	(* Remote hypervisor. *)
   tgt_architecture : architecture;	(* Remote architecture. *)
@@ -94,6 +92,8 @@ let config_ssh = ref None
 
 (* What to transfer. *)
 let config_devices_to_send = ref None
+
+(* The root filesystem - parts of this get modified after migration. *)
 let config_root_filesystem = ref None
 
 (* Configuration of the target. *)
@@ -207,6 +207,9 @@ let architecture_of_string = function
   | "" -> UnknownArch
   | str -> OtherArch str
 
+type wordsize =
+  | W32 | W64 | WUnknown
+
 let wordsize_of_architecture = function
   | I386 -> W32
   | X86_64 -> W64
@@ -518,8 +521,6 @@ let safe_name =
     done;
     if !have_safe then name else next_anon ()
 
-type block_device = string * int64	(* "hda" & size in bytes *)
-
 (* Parse the output of 'lvs' to get list of LV names, sizes,
  * corresponding PVs, etc.  Returns a list of (lvname, PVs, lvsize).
  *)
@@ -714,7 +715,7 @@ let test_ssh config =
     true
 
 (* Rewrite /mnt/root/etc/fstab. *)
-let rewrite_fstab devices_to_send =
+let rewrite_fstab () =
   let filename = "/mnt/root/etc/fstab" in
   if is_file filename = Some true then (
     sh ("cp " ^ quote filename ^ " " ^ quote (filename ^ ".p2vsaved"));
@@ -864,9 +865,11 @@ let rec main ttyname =
     (s_ "Detecting hard drives (this may take some time) ...");
 
   (* Search for all non-removable block devices.  Do this early and bail
-   * if we can't find anything.  This is a list of strings, like "hda".
+   * if we can't find anything.
+   *
+   * This is a list of strings, like "hda" and size in bytes.
    *)
-  let all_block_devices : block_device list =
+  let all_block_devices : (string * int64) list =
     let rex = Pcre.regexp "^[hs]d" in
     let devices = Array.to_list (Sys.readdir "/sys/block") in
     let devices = List.sort devices in
@@ -930,10 +933,24 @@ let rec main ttyname =
     (* Concatenate LVs & Parts *)
     lvs @ parts in
 
+  (* Run blockdev --getsize64 on each partition to get its size.
+   *
+   * Returns a list of partitions and their size in bytes.
+   *)
+  let all_partitions : (partition * int64) list =
+    List.filter_map (
+      fun part ->
+	let cmd = "blockdev --getsize64 " ^ quote (dev_of_partition part) in
+	let lines = shget cmd in
+	match lines with
+	| Some (blksize::_) -> Some (part, Int64.of_string blksize)
+	| Some [] | None -> None
+    ) all_partitions in
+
   (* Try to determine the nature of each partition.
    * Root? Swap? Architecture? etc.
    *)
-  let all_partitions : (partition * nature) list =
+  let all_partitions : (partition * (int64 * nature)) list =
     (* Output of 'file' command for Linux swap file. *)
     let swap = Pcre.regexp "Linux.*swap.*file" in
     (* Contents of /etc/redhat-release. *)
@@ -1023,7 +1040,7 @@ let rec main ttyname =
     in
 
     List.map (
-      fun part ->
+      fun (part, size) ->
 	let dev = dev_of_partition part in (* Get /dev device. *)
 
 	let nature =
@@ -1053,7 +1070,7 @@ let rec main ttyname =
 	eprintf "partition detection: %s is %s\n%!"
 	  dev (string_of_nature nature);
 
-	(part, nature)
+	(part, (size, nature))
     ) all_partitions
   in
 
@@ -1137,7 +1154,7 @@ let rec main ttyname =
 	       *)
 	      let rec loop = function
 		| [] -> ()
-		| (partition, LinuxRoot (_, ((RHEL _|Fedora _) as distro)))
+		| (partition, (_, LinuxRoot (_, ((RHEL _|Fedora _) as distro))))
 		  :: parts ->
 		    let label =
 		      sprintf "%s (%s)"
@@ -1402,7 +1419,7 @@ let rec main ttyname =
 	  | Some fs -> fs
 	  | None ->
 	      let items = List.map (
-		fun (part, nature) ->
+		fun (part, (_, nature)) ->
 		  let label =
 		    sprintf "%s %s" (dev_of_partition part)
 		      (string_of_nature nature) in
@@ -1445,7 +1462,7 @@ let rec main ttyname =
 	      Newt.listbox_set_current_by_key archlistbox UnknownArch;
 	      (try
 		 match List.assoc config_root_filesystem all_partitions with
-		 | LinuxRoot (arch, _) ->
+		 | _, LinuxRoot (arch, _) ->
 		     Newt.listbox_set_current_by_key archlistbox arch
 		 | _ -> ()
 		with
@@ -1684,7 +1701,7 @@ let rec main ttyname =
   ) config_devices_to_send in
 
   (* Modify files on the root filesystem. *)
-  rewrite_fstab config_devices_to_send;
+  rewrite_fstab ();
   (* XXX Other files to rewrite? *)
 
   (* Unmount the root filesystem and sync disks. *)