diff --git a/Makefile.in b/Makefile.in
index e67b300..08f895a 100644
--- a/Makefile.in
+++ b/Makefile.in
@@ -88,6 +88,7 @@ SOURCE=\
thin-provisioning/thin_repair.cc \
thin-provisioning/thin_restore.cc \
thin-provisioning/thin_rmap.cc \
+ thin-provisioning/thin_show_duplicates.cc \
thin-provisioning/thin_trim.cc \
thin-provisioning/xml_format.cc
@@ -176,6 +177,7 @@ install: bin/pdata_tools
ln -s -f pdata_tools $(BINDIR)/thin_repair
ln -s -f pdata_tools $(BINDIR)/thin_restore
ln -s -f pdata_tools $(BINDIR)/thin_rmap
+ ln -s -f pdata_tools $(BINDIR)/thin_show_duplicates
ln -s -f pdata_tools $(BINDIR)/thin_trim
ln -s -f pdata_tools $(BINDIR)/thin_metadata_size
ln -s -f pdata_tools $(BINDIR)/era_check
diff --git a/bin/thin_show_duplicates b/bin/thin_show_duplicates
new file mode 120000
index 0000000..84c01e7
--- /dev/null
+++ b/bin/thin_show_duplicates
@@ -0,0 +1 @@
+pdata_tools
\ No newline at end of file
diff --git a/main.cc b/main.cc
index ed69ba9..ff9017b 100644
--- a/main.cc
+++ b/main.cc
@@ -32,6 +32,7 @@ int main(int argc, char **argv)
app.add_cmd(thin_provisioning::thin_restore_cmd);
app.add_cmd(thin_provisioning::thin_repair_cmd);
app.add_cmd(thin_provisioning::thin_rmap_cmd);
+ app.add_cmd(thin_provisioning::thin_show_dups_cmd);
// FIXME: convert thin_metadata_size to c++
//app.add_cmd(thin_provisioning::thin_metadata_size_cmd);
diff --git a/thin-provisioning/commands.h b/thin-provisioning/commands.h
index de63e53..65714ec 100644
--- a/thin-provisioning/commands.h
+++ b/thin-provisioning/commands.h
@@ -15,6 +15,7 @@ namespace thin_provisioning {
extern base::command thin_rmap_cmd;
extern base::command thin_trim_cmd;
extern base::command thin_metadata_size_cmd;
+ extern base::command thin_show_dups_cmd;
}
//----------------------------------------------------------------
diff --git a/thin-provisioning/thin_show_duplicates.cc b/thin-provisioning/thin_show_duplicates.cc
new file mode 100644
index 0000000..06066b1
--- /dev/null
+++ b/thin-provisioning/thin_show_duplicates.cc
@@ -0,0 +1,111 @@
+// Copyright (C) 2015 Red Hat, Inc. All rights reserved.
+//
+// This file is part of the thin-provisioning-tools source.
+//
+// thin-provisioning-tools 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 3 of
+// the License, or (at your option) any later version.
+//
+// thin-provisioning-tools 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 thin-provisioning-tools. If not, see
+// .
+
+#include
+#include
+#include
+
+#include "version.h"
+
+#include "base/application.h"
+#include "base/error_state.h"
+#include "persistent-data/file_utils.h"
+#include "persistent-data/space-maps/core.h"
+#include "persistent-data/space-maps/disk.h"
+#include "thin-provisioning/commands.h"
+#include "thin-provisioning/device_tree.h"
+#include "thin-provisioning/mapping_tree.h"
+#include "thin-provisioning/superblock.h"
+
+using namespace base;
+using namespace std;
+using namespace thin_provisioning;
+
+//----------------------------------------------------------------
+
+namespace {
+ block_manager<>::ptr
+ open_bm(string const &path) {
+ block_address nr_blocks = get_nr_blocks(path);
+ block_manager<>::mode m = block_manager<>::READ_ONLY;
+ return block_manager<>::ptr(new block_manager<>(path, nr_blocks, 1, m));
+ }
+
+ transaction_manager::ptr
+ open_tm(block_manager<>::ptr bm) {
+ space_map::ptr sm(new core_map(bm->get_nr_blocks()));
+ sm->inc(superblock_detail::SUPERBLOCK_LOCATION);
+ transaction_manager::ptr tm(new transaction_manager(bm, sm));
+ return tm;
+ }
+
+ //--------------------------------
+
+ struct flags {
+ flags() {
+ }
+ };
+
+ void usage(ostream &out, string const &cmd) {
+ out << "Usage: " << cmd << " [options] {device|file}" << endl
+ << "Options:" << endl
+ << " {-h|--help}" << endl
+ << " {-V|--version}" << endl;
+ }
+}
+
+int thin_show_dups_main(int argc, char **argv)
+{
+ int c;
+ flags fs;
+
+ char const shortopts[] = "qhV";
+ option const longopts[] = {
+ { "help", no_argument, NULL, 'h'},
+ { "version", no_argument, NULL, 'V'},
+ { NULL, no_argument, NULL, 0 }
+ };
+
+ while ((c = getopt_long(argc, argv, shortopts, longopts, NULL)) != -1) {
+ switch(c) {
+ case 'h':
+ usage(cout, basename(argv[0]));
+ return 0;
+
+ case 'V':
+ cout << THIN_PROVISIONING_TOOLS_VERSION << endl;
+ return 0;
+
+ default:
+ usage(cerr, basename(argv[0]));
+ return 1;
+ }
+ }
+
+ if (argc == optind) {
+ cerr << "No input file provided." << endl;
+ usage(cerr, basename(argv[0]));
+ exit(1);
+ }
+
+ return 0;
+}
+
+base::command thin_provisioning::thin_show_dups_cmd("thin_show_duplicates", thin_show_dups_main);
+
+//----------------------------------------------------------------