thin-provisioning-tools/thin-provisioning/metadata_dumper.h
Joe Thornber e801cc607b [block_manager] Hard code block size to 4k.
We're never going to use anything other than 4k, and by hard coding it we
avoid making block_manager a template.
2020-04-30 14:30:01 +01:00

75 lines
2.3 KiB
C++

// Copyright (C) 2011 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
// <http://www.gnu.org/licenses/>.
#ifndef METADATA_DUMPER_H
#define METADATA_DUMPER_H
#include "thin-provisioning/emitter.h"
#include "thin-provisioning/metadata.h"
#include "thin-provisioning/override_emitter.h"
#include <boost/optional.hpp>
#include <set>
//----------------------------------------------------------------
namespace thin_provisioning {
class dump_options {
public:
dump_options()
: skip_mappings_(false) {
}
bool selected_dev(uint64_t dev_id) const {
return !dev_filter_ || dev_filter_->count(dev_id);
}
void select_dev(uint64_t dev_id) {
if (!dev_filter_)
dev_filter_ = dev_set();
dev_filter_->insert(dev_id);
}
bool skip_mappings_;
override_options overrides_;
using dev_set = std::set<uint64_t>;
using maybe_dev_set = boost::optional<dev_set>;
maybe_dev_set dev_filter_;
};
// Set the @repair flag if your metadata is corrupt, and you'd like
// the dumper to do it's best to recover info. If not set, any
// corruption encountered will cause an exception to be thrown.
void metadata_dump(metadata::ptr md, emitter::ptr e, dump_options const &opts);
// We have to provide a different interface for repairing, since
// the superblock itself may be corrupt, so we wont be able
// to create the metadata object.
void metadata_repair(block_manager::ptr bm, emitter::ptr e, override_options const &opts);
// Only used by ll_restore, so we leave the repair arg
void metadata_dump_subtree(metadata::ptr md, emitter::ptr e, bool repair, uint64_t subtree_root);
}
//----------------------------------------------------------------
#endif