[thin_generate_mappings] Introduce the mapping generation tool

This commit is contained in:
Ming-Hung Tsai 2020-06-10 10:23:41 +08:00
parent 621b466333
commit 8fa59553c4
4 changed files with 216 additions and 0 deletions

View File

@ -129,6 +129,7 @@ DEVTOOLS_SOURCE=\
thin-provisioning/thin_ll_restore.cc \ thin-provisioning/thin_ll_restore.cc \
thin-provisioning/thin_show_duplicates.cc \ thin-provisioning/thin_show_duplicates.cc \
thin-provisioning/thin_generate_metadata.cc \ thin-provisioning/thin_generate_metadata.cc \
thin-provisioning/thin_generate_mappings.cc \
thin-provisioning/variable_chunk_stream.cc \ thin-provisioning/variable_chunk_stream.cc \
thin-provisioning/thin_show_metadata.cc \ thin-provisioning/thin_show_metadata.cc \
thin-provisioning/thin_scan.cc \ thin-provisioning/thin_scan.cc \

View File

@ -23,6 +23,7 @@ thin_provisioning::register_thin_commands(base::application &app)
app.add_cmd(command::ptr(new thin_ll_restore_cmd())); app.add_cmd(command::ptr(new thin_ll_restore_cmd()));
app.add_cmd(command::ptr(new thin_scan_cmd())); app.add_cmd(command::ptr(new thin_scan_cmd()));
app.add_cmd(command::ptr(new thin_generate_metadata_cmd())); app.add_cmd(command::ptr(new thin_generate_metadata_cmd()));
app.add_cmd(command::ptr(new thin_generate_mappings_cmd()));
app.add_cmd(command::ptr(new thin_show_duplicates_cmd())); app.add_cmd(command::ptr(new thin_show_duplicates_cmd()));
app.add_cmd(command::ptr(new thin_show_metadata_cmd())); app.add_cmd(command::ptr(new thin_show_metadata_cmd()));
app.add_cmd(command::ptr(new thin_journal_cmd())); app.add_cmd(command::ptr(new thin_journal_cmd()));

View File

@ -110,6 +110,13 @@ namespace thin_provisioning {
virtual int run(int argc, char **argv); virtual int run(int argc, char **argv);
}; };
class thin_generate_mappings_cmd : public base::command {
public:
thin_generate_mappings_cmd();
virtual void usage(std::ostream &out) const;
virtual int run(int argc, char **argv);
};
class thin_show_metadata_cmd : public base::command { class thin_show_metadata_cmd : public base::command {
public: public:
thin_show_metadata_cmd(); thin_show_metadata_cmd();

View File

@ -0,0 +1,207 @@
// 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
// <http://www.gnu.org/licenses/>.
#include "base/io_generator.h"
#include "base/output_file_requirements.h"
#include "persistent-data/file_utils.h"
#include "thin-provisioning/commands.h"
#include "thin-provisioning/thin_pool.h"
#include "version.h"
#include <boost/optional.hpp>
#include <getopt.h>
#include <unistd.h>
using namespace boost;
using namespace thin_provisioning;
//----------------------------------------------------------------
namespace {
struct flags {
flags()
: pattern("write"),
offset(0)
{
}
bool check_conformance();
boost::optional<string> output;
base::io_pattern pattern;
boost::optional<unsigned> dev_id;
boost::optional<base::sector_t> block_size;
base::sector_t offset;
boost::optional<base::sector_t> size;
boost::optional<base::sector_t> io_size;
};
bool flags::check_conformance() {
if (!output) {
cerr << "No output file provided." << endl;
return false;
}
if (!dev_id) {
cerr << "No device id provided." << endl;
return false;
}
if (!size) {
cerr << "No device size specified" << endl;
return false;
}
check_output_file_requirements(*output);
return true;
}
//--------------------------------
thin_pool::ptr open_pool(flags const &fs) {
block_manager::ptr bm = open_bm(*fs.output, block_manager::READ_WRITE);
return thin_pool::ptr(new thin_pool(bm));
}
int generate_mappings(flags const &fs) {
thin_pool::ptr pool = open_pool(fs);
thin::ptr td = pool->open_thin(*fs.dev_id);
io_generator_options opts;
opts.pattern_ = fs.pattern;
opts.block_size_ = !fs.block_size ?
pool->get_data_block_size() :
*fs.block_size;
opts.offset_ = fs.offset;
opts.size_ = *fs.size;
opts.io_size_ = !fs.io_size ? *fs.size : *fs.io_size;
io_generator::ptr gen = create_io_generator(opts);
base::io io;
while (gen->has_next()) {
// TODO: support io.size_
gen->next(io);
switch (io.op_) {
case base::REQ_OP_READ:
process_read(td, pool, io.sector_);
break;
case base::REQ_OP_WRITE:
process_write(td, pool, io.sector_);
break;
case base::REQ_OP_DISCARD:
process_discard(td, pool, io.sector_);
break;
}
}
pool->commit();
return 0;
}
}
//----------------------------------------------------------------
thin_generate_mappings_cmd::thin_generate_mappings_cmd()
: command("thin_generate_mappings")
{
}
void
thin_generate_mappings_cmd::usage(std::ostream &out) const
{
out << "Usage: " << get_name() << " [options]\n"
<< "Options:\n"
<< " {-h|--help}\n"
<< " {-o|--output} <output device or file>\n"
<< " {--dev-id} <dev-id>\n"
<< " {--offset} <offset>\n"
<< " {--io-size} <io_size>\n"
<< " {--rw write|trim|randwrite|randtrim|randtw}\n"
<< " {--size} <size>\n"
<< " {-V|--version}" << endl;
}
int
thin_generate_mappings_cmd::run(int argc, char **argv)
{
int c;
struct flags fs;
const char *shortopts = "hi:o:qV";
const struct option longopts[] = {
{ "help", no_argument, NULL, 'h' },
{ "output", required_argument, NULL, 'o' },
{ "dev-id", required_argument, NULL, 1 },
{ "rw", required_argument, NULL, 2 },
{ "offset", required_argument, NULL, 3 },
{ "size", required_argument, NULL, 4 },
{ "io-size", required_argument, NULL, 5 },
{ "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);
return 0;
case 'o':
fs.output = optarg;
break;
case 1:
fs.dev_id = parse_uint64(optarg, "dev_id");
break;
case 2:
fs.pattern.parse(optarg);
break;
case 3:
fs.offset = parse_uint64(optarg, "offset");
break;
case 4:
fs.size = parse_uint64(optarg, "size");
break;
case 5:
fs.io_size = parse_uint64(optarg, "io_size");
break;
case 'V':
cout << THIN_PROVISIONING_TOOLS_VERSION << endl;
return 0;
default:
usage(cerr);
return 1;
}
}
if (!fs.check_conformance()) {
usage(cerr);
return 1;
}
return generate_mappings(fs);
}
//----------------------------------------------------------------