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[caching/metadata_dump] only dump valid hints

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This commit is contained in:
Joe Thornber 2013-10-09 10:49:53 +01:00
parent c6487fd283
commit 83f1e4bdd9
1 changed files with 28 additions and 8 deletions
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36
caching/metadata_dump.cc
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@ -1,5 +1,7 @@
#include "caching/metadata_dump.h"
#include <set>
using namespace std;
using namespace caching;
@ -20,17 +22,26 @@ namespace {
class mapping_emitter : public mapping_visitor {
public:
mapping_emitter(emitter::ptr e)
: e_(e) {
mapping_emitter(emitter::ptr e, set<block_address> &valid_blocks)
: e_(e),
valid_blocks_(valid_blocks) {
}
void visit(block_address cblock, mapping const &m) {
if (m.flags_ & M_VALID)
if (m.flags_ & M_VALID) {
e_->mapping(cblock, m.oblock_, m.flags_ & M_DIRTY);
mark_valid(cblock);
}
}
private:
void mark_valid(block_address cblock) {
valid_blocks_.insert(cblock);
}
emitter::ptr e_;
set<block_address> &valid_blocks_;
};
struct ignore_mapping_damage : public mapping_array_damage::damage_visitor {
@ -53,16 +64,23 @@ namespace {
class hint_emitter : public hint_visitor {
public:
hint_emitter(emitter::ptr e)
: e_(e) {
hint_emitter(emitter::ptr e, set<block_address> valid_blocks)
: e_(e),
valid_blocks_(valid_blocks) {
}
virtual void visit(block_address cblock, std::vector<unsigned char> const &data) {
e_->hint(cblock, data);
if (valid(cblock))
e_->hint(cblock, data);
}
private:
bool valid(block_address cblock) const {
return valid_blocks_.find(cblock) != valid_blocks_.end();
}
emitter::ptr e_;
set<block_address> &valid_blocks_;
};
struct ignore_hint_damage : public hint_array_damage::damage_visitor {
@ -81,6 +99,8 @@ namespace {
void
caching::metadata_dump(metadata::ptr md, emitter::ptr e, bool repair)
{
set<block_address> valid_blocks;
superblock const &sb = md->sb_;
e->begin_superblock(to_string(sb.uuid), sb.data_block_size,
sb.cache_blocks, to_string(sb.policy_name),
@ -90,7 +110,7 @@ caching::metadata_dump(metadata::ptr md, emitter::ptr e, bool repair)
{
namespace mad = mapping_array_damage;
mapping_emitter me(e);
mapping_emitter me(e, valid_blocks);
ignore_mapping_damage ignore;
fatal_mapping_damage fatal;
mad::damage_visitor &dv = repair ?
@ -105,7 +125,7 @@ caching::metadata_dump(metadata::ptr md, emitter::ptr e, bool repair)
{
using namespace hint_array_damage;
hint_emitter he(e);
hint_emitter he(e, valid_blocks);
ignore_hint_damage ignore;
fatal_hint_damage fatal;
damage_visitor &dv = repair ?