[thin_check] factor out metadata_checker
This commit is contained in:
Ming-Hung Tsai
committed by
Joe Thornber
Joe Thornber
parent
d6a8c03aa2
commit
c85ea5ef76
@@ -19,142 +19,54 @@
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#ifndef METADATA_CHECKER_H
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#define METADATA_CHECKER_H
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#include "base/error_state.h"
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#include "block-cache/block_cache.h"
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#include "persistent-data/block.h"
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#include "persistent-data/error_set.h"
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#include "persistent-data/run.h"
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#include "persistent-data/space_map.h"
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#include <deque>
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//----------------------------------------------------------------
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namespace thin_provisioning {
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// FIXME: should take a block manager or transaction manager
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void check_metadata(std::string const &path);
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struct check_options {
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enum data_mapping_options {
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DATA_MAPPING_NONE,
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DATA_MAPPING_LEVEL1,
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DATA_MAPPING_LEVEL2,
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};
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enum metadata_space_map_options {
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METADATA_SPACE_MAP_NONE,
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METADATA_SPACE_MAP_FULL,
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};
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check_options();
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void set_superblock_only();
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void set_skip_mappings();
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void set_override_mapping_root(bcache::block_address b);
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data_mapping_options check_data_mappings_;
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metadata_space_map_options check_metadata_space_map_;
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boost::optional<bcache::block_address> override_mapping_root_;
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};
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enum output_options {
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OUTPUT_NORMAL,
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OUTPUT_QUIET,
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};
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#if 0
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// Base class for all types of metadata damage. Used in reporting.
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class metadata_damage {
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class metadata_checker {
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public:
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typedef boost::shared_ptr<metadata_damage> ptr;
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virtual ~metadata_damage() {}
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virtual void visit(metadata_damage_visitor &visitor) const = 0;
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typedef boost::shared_ptr<metadata_checker> ptr;
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void set_message(std::string const &message);
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std::string const &get_message() const;
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virtual ~metadata_checker() {}
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private:
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std::string message_;
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virtual base::error_state check() = 0;
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};
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// FIXME: there's a mix of abstraction here, some classes represent
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// the actual damage on disk (bad_ref_count), others represent the
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// repercussions (missing_mapping). Need to revist, probably once
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// we've got the reporting layer in.
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class super_block_corruption : public metadata_damage {
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void visit(metadata_damage_visitor &visitor) const;
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bool operator ==(super_block_corruption const &rhs) const;
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};
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typedef base::run<uint64_t> run64;
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struct missing_device_details : public metadata_damage {
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missing_device_details(run64 missing);
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virtual void visit(metadata_damage_visitor &visitor) const;
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bool operator ==(missing_device_details const &rhs) const;
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run64 missing_;
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};
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struct missing_devices : public metadata_damage {
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missing_devices(run64 missing);
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virtual void visit(metadata_damage_visitor &visitor) const;
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bool operator ==(missing_devices const &rhs) const;
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run64 missing_;
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};
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struct missing_mappings : public metadata_damage {
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missing_mappings(uint64_t dev, run64 missing);
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virtual void visit(metadata_damage_visitor &visitor) const;
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bool operator ==(missing_mappings const &rhs) const;
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uint64_t dev_;
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run64 missing_;
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};
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struct bad_metadata_ref_count : public metadata_damage {
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bad_metadata_ref_count(block_address b,
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ref_t actual,
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ref_t expected);
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virtual void visit(metadata_damage_visitor &visitor) const;
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bool operator ==(bad_metadata_ref_count const &rhs) const;
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block_address b_;
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ref_t actual_;
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ref_t expected_;
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};
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struct bad_data_ref_count : public metadata_damage {
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bad_data_ref_count(block_address b,
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ref_t actual,
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ref_t expected);
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virtual void visit(metadata_damage_visitor &visitor) const;
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bool operator ==(bad_data_ref_count const &rhs) const;
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block_address b_;
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ref_t actual_;
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ref_t expected_;
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};
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struct missing_metadata_ref_counts : public metadata_damage {
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missing_metadata_ref_counts(run64 missing);
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virtual void visit(metadata_damage_visitor &visitor) const;
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bool operator ==(missing_metadata_ref_counts const &rhs) const;
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run64 missing_;
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};
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struct missing_data_ref_counts : public metadata_damage {
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missing_data_ref_counts(run64 missing);
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virtual void visit(metadata_damage_visitor &visitor) const;
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bool operator ==(missing_data_ref_counts const &rhs) const;
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run64 missing_;
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};
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class metadata_damage_visitor {
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public:
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typedef boost::shared_ptr<metadata_damage_visitor> ptr;
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virtual ~metadata_damage_visitor() {}
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void visit(metadata_damage const &damage);
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virtual void visit(super_block_corruption const &damage) = 0;
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virtual void visit(missing_device_details const &damage) = 0;
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virtual void visit(missing_devices const &damage) = 0;
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virtual void visit(missing_mappings const &damage) = 0;
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virtual void visit(bad_metadata_ref_count const &damage) = 0;
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virtual void visit(bad_data_ref_count const &damage) = 0;
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virtual void visit(missing_metadata_ref_counts const &damage) = 0;
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virtual void visit(missing_data_ref_counts const &damage) = 0;
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};
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typedef std::deque<metadata_damage::ptr> damage_list;
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typedef boost::shared_ptr<damage_list> damage_list_ptr;
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#endif
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metadata_checker::ptr
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create_base_checker(persistent_data::block_manager<>::ptr bm,
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check_options const &check_opts,
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output_options output_opts);
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}
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//----------------------------------------------------------------
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