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[thin_generate_metadata] Make use of thin_pool.cc

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This commit is contained in:
Ming-Hung Tsai 2020-06-01 00:50:57 +08:00
parent 66b519db83
commit a842b4ecfd
1 changed files with 37 additions and 73 deletions
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110
thin-provisioning/thin_generate_metadata.cc
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@ -19,7 +19,7 @@
#include "base/output_file_requirements.h"
#include "persistent-data/file_utils.h"
#include "thin-provisioning/commands.h"
#include "thin-provisioning/metadata.h"
#include "thin-provisioning/thin_pool.h"
#include "version.h"
#include <boost/optional.hpp>
@ -27,8 +27,6 @@
#include <unistd.h>
using namespace boost;
using namespace persistent_data;
using namespace std;
using namespace thin_provisioning;
//----------------------------------------------------------------
@ -40,6 +38,7 @@ namespace {
METADATA_OP_FORMAT,
METADATA_OP_OPEN,
METADATA_OP_CREATE_THIN,
METADATA_OP_CREATE_SNAP,
METADATA_OP_LAST
};
@ -55,7 +54,8 @@ namespace {
metadata_operations op;
sector_t data_block_size;
block_address nr_data_blocks;
optional<uint64_t> dev_id;
optional<thin_dev_t> dev_id;
optional<thin_dev_t> origin;
optional<string> output;
};
@ -77,88 +77,41 @@ namespace {
return false;
}
if (op == METADATA_OP_CREATE_SNAP && (!dev_id || !origin)) {
cerr << "no device id provided." << endl;
return false;
}
return true;
}
//--------------------------------
single_mapping_tree::ptr new_mapping_tree(metadata::ptr md) {
return single_mapping_tree::ptr(
new single_mapping_tree(*md->tm_,
mapping_tree_detail::block_time_ref_counter(md->data_sm_)));
}
bool is_device_exists(metadata::ptr md, uint64_t dev_id) {
uint64_t key[1] = {dev_id};
device_tree::maybe_value v1 = md->details_->lookup(key);
if (v1)
return true;
dev_tree::maybe_value v2 = md->mappings_top_level_->lookup(key);
if (v2)
return true;
return false;
}
//--------------------------------
metadata::ptr format_metadata(block_manager::ptr bm,
sector_t data_block_size,
block_address nr_data_blocks) {
metadata::ptr md(new metadata(bm,
metadata::CREATE,
data_block_size,
nr_data_blocks));
md->commit();
return md;
}
metadata::ptr open_metadata(block_manager::ptr bm) {
metadata::ptr md(new metadata(bm, true));
return md;
}
void create_thin(metadata::ptr md, uint64_t dev_id) {
uint64_t key[1] = {dev_id};
if (is_device_exists(md, dev_id))
throw runtime_error("device already exists");
device_tree_detail::device_details details;
details.transaction_id_ = md->sb_.trans_id_;
details.creation_time_ = md->sb_.time_;
details.snapshotted_time_ = details.creation_time_;
md->details_->insert(key, details);
single_mapping_tree::ptr subtree = new_mapping_tree(md);
md->mappings_top_level_->insert(key, subtree->get_root());
md->mappings_->set_root(md->mappings_top_level_->get_root()); // FIXME: ugly
md->commit();
}
metadata::ptr open_or_format_metadata(block_manager::ptr bm, flags const &fs) {
thin_pool::ptr open_or_create_pool(flags const &fs) {
block_manager::ptr bm = open_bm(*fs.output, block_manager::READ_WRITE);
if (fs.op == flags::METADATA_OP_FORMAT)
return format_metadata(bm, fs.data_block_size, fs.nr_data_blocks);
return thin_pool::ptr(new thin_pool(bm, fs.data_block_size, fs.nr_data_blocks));
else
return open_metadata(bm);
return thin_pool::ptr(new thin_pool(bm));
}
int generate_metadata(flags const &fs) {
block_manager::ptr bm = open_bm(*fs.output, block_manager::READ_WRITE);
metadata::ptr md = open_or_format_metadata(bm, fs);
thin_pool::ptr pool = open_or_create_pool(fs);
switch (fs.op) {
case flags::METADATA_OP_CREATE_THIN:
create_thin(md, *fs.dev_id);
pool->create_thin(*fs.dev_id);
break;
case flags::METADATA_OP_CREATE_SNAP:
pool->create_snap(*fs.dev_id, *fs.origin);
break;
default:
break;
}
pool->commit();
return 0;
}
}
@ -176,8 +129,12 @@ thin_generate_metadata_cmd::usage(std::ostream &out) const
out << "Usage: " << get_name() << " [options]\n"
<< "Options:\n"
<< " {-h|--help}\n"
<< " --data-block-size <block size>\n"
<< " --nr-data-blocks <nr>\n"
<< " {--format}\n"
<< " {--create-thin} <dev-id>\n"
<< " {--create-snap} <dev-id>\n"
<< " {--data-block-size} <block size>\n"
<< " {--nr-data-blocks} <nr>\n"
<< " {--origin} <origin-id>\n"
<< " {-o|--output} <output device or file>\n"
<< " {-V|--version}" << endl;
}
@ -193,10 +150,11 @@ thin_generate_metadata_cmd::run(int argc, char **argv)
{ "output", required_argument, NULL, 'o' },
{ "format", no_argument, NULL, 1 },
{ "open", no_argument, NULL, 2 },
{ "create-thin", no_argument, NULL, 3 },
{ "create-thin", required_argument, NULL, 3 },
{ "create-snap", required_argument, NULL, 4 },
{ "data-block-size", required_argument, NULL, 101 },
{ "nr-data-blocks", required_argument, NULL, 102 },
{ "dev-id", required_argument, NULL, 301 },
{ "origin", required_argument, NULL, 401 },
{ "version", no_argument, NULL, 'V' },
{ NULL, no_argument, NULL, 0 }
};
@ -221,6 +179,12 @@ thin_generate_metadata_cmd::run(int argc, char **argv)
case 3:
fs.op = flags::METADATA_OP_CREATE_THIN;
fs.dev_id = parse_uint64(optarg, "device id");
break;
case 4:
fs.op = flags::METADATA_OP_CREATE_SNAP;
fs.dev_id = parse_uint64(optarg, "device id");
break;
case 101:
@ -231,8 +195,8 @@ thin_generate_metadata_cmd::run(int argc, char **argv)
fs.nr_data_blocks = parse_uint64(optarg, "nr data blocks");
break;
case 301:
fs.dev_id = parse_uint64(optarg, "dev id");
case 401:
fs.origin = parse_uint64(optarg, "origin");
break;
case 'V':