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diff --git a/virt-df/virt_df_lvm2_parser.mly b/virt-df/virt_df_lvm2_parser.mly
new file mode 100644
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+++ b/virt-df/virt_df_lvm2_parser.mly
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+/* 'df' command for virtual domains.  -*- text -*-
+   (C) Copyright 2007-2008 Richard W.M. Jones, Red Hat Inc.
+   http://libvirt.org/
+
+   This program is free software; you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 2 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program; if not, write to the Free Software
+   Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ */
+
+/* Parser for LVM2 metadata.
+   ocamlyacc tutorial:
+   http://plus.kaist.ac.kr/~shoh/ocaml/ocamllex-ocamlyacc/ocamlyacc-tutorial/
+ */
+
+%{
+  open Virt_df_lvm2_metadata
+%}
+
+%token LBRACE RBRACE			/* { } */
+%token LSQUARE RSQUARE			/* [ ] */
+%token EQ				/* = */
+%token COMMA				/* , */
+%token <string> STRING			/* "string" */
+%token <int64> INT			/* an integer */
+%token <float> FLOAT			/* a float */
+%token <string> IDENT			/* a naked keyword/identifier */
+%token EOF				/* end of file */
+
+%start input
+%type <Virt_df_lvm2_metadata.metadata> input
+
+%%
+
+input	: lines EOF	{ List.rev $1 }
+	;
+
+lines	: /* empty */	{ prerr_endline "empty line"; [] }
+	| lines line	{ prerr_endline "input line"; $2 :: $1 }
+	;
+
+line	: /* empty */	/* These dummy entries get removed after parsing. */
+			{ ("", String "") }
+	| IDENT EQ value
+			{ ($1, $3) }
+	| IDENT LBRACE lines RBRACE
+			{ ($1, Metadata (List.rev $3)) }
+	;
+
+value	: STRING	{ String $1 }
+	| INT		{ Int $1 }
+	| FLOAT		{ Float $1 }
+	| LSQUARE list RSQUARE
+			{ List (List.rev $2) }
+	;
+
+list	: /* empty */	{ [] }
+	| value		{ [$1] }
+	| list COMMA value
+			{ $3 :: $1 }
+	;