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Add metadata_counter.{h,cc}

This commit is contained in:
Ming-Hung Tsai 2016-02-27 15:23:06 +08:00
parent d068ec8082
commit 80783e7729
3 changed files with 98 additions and 0 deletions
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1
Makefile.in
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@ -81,6 +81,7 @@ SOURCE=\
thin-provisioning/mapping_tree.cc \
thin-provisioning/metadata.cc \
thin-provisioning/metadata_checker.cc \
thin-provisioning/metadata_counter.cc \
thin-provisioning/metadata_dumper.cc \
thin-provisioning/restore_emitter.cc \
thin-provisioning/rmap_visitor.cc \

73
thin-provisioning/metadata_counter.cc Normal file
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@ -0,0 +1,73 @@
#include "thin-provisioning/metadata_counter.h"
#include "persistent-data/space-maps/core.h"
#include "persistent-data/space-maps/disk_structures.h"
using namespace persistent_data;
using namespace thin_provisioning;
//----------------------------------------------------------------
void thin_provisioning::count_trees(transaction_manager::ptr tm,
superblock_detail::superblock &sb,
block_counter &bc) {
// Count the device tree
{
noop_value_counter<device_tree_detail::device_details> vc;
device_tree dtree(*tm, sb.device_details_root_,
device_tree_detail::device_details_traits::ref_counter());
count_btree_blocks(dtree, bc, vc);
}
// Count the mapping tree
{
noop_value_counter<mapping_tree_detail::block_time> vc;
mapping_tree mtree(*tm, sb.data_mapping_root_,
mapping_tree_detail::block_traits::ref_counter(space_map::ptr()));
count_btree_blocks(mtree, bc, vc);
}
}
void thin_provisioning::count_space_maps(transaction_manager::ptr tm,
superblock_detail::superblock &sb,
block_counter &bc) {
// Count the metadata space map (no-throw)
try {
persistent_space_map::ptr metadata_sm =
open_metadata_sm(*tm, static_cast<void *>(&sb.metadata_space_map_root_));
metadata_sm->count_metadata(bc);
} catch (std::exception &e) {
cerr << e.what() << endl;
}
// Count the data space map (no-throw)
try {
persistent_space_map::ptr data_sm =
open_disk_sm(*tm, static_cast<void *>(&sb.data_space_map_root_));
data_sm->count_metadata(bc);
} catch (std::exception &e) {
cerr << e.what() << endl;
}
}
void thin_provisioning::count_metadata(transaction_manager::ptr tm,
superblock_detail::superblock &sb,
block_counter &bc,
bool skip_metadata_snap) {
// Count the superblock
bc.inc(superblock_detail::SUPERBLOCK_LOCATION);
count_trees(tm, sb, bc);
// Count the metadata snap, if present
if (!skip_metadata_snap && sb.metadata_snap_ != superblock_detail::SUPERBLOCK_LOCATION) {
bc.inc(sb.metadata_snap_);
superblock_detail::superblock snap = read_superblock(tm->get_bm(), sb.metadata_snap_);
count_trees(tm, snap, bc);
}
count_trees(tm, sb, bc);
count_space_maps(tm, sb, bc);
}
//----------------------------------------------------------------

24
thin-provisioning/metadata_counter.h Normal file
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@ -0,0 +1,24 @@
#ifndef METADATA_COUNTER_H
#define METADATA_COUNTER_H
#include "thin-provisioning/metadata.h"
#include "persistent-data/data-structures/btree_counter.h"
//----------------------------------------------------------------
namespace thin_provisioning {
void count_trees(transaction_manager::ptr tm,
superblock_detail::superblock &sb,
block_counter &bc);
void count_space_maps(transaction_manager::ptr tm,
superblock_detail::superblock &sb,
block_counter &bc);
void count_metadata(transaction_manager::ptr tm,
superblock_detail::superblock &sb,
block_counter &bc,
bool skip_metadata_snap = false);
}
//----------------------------------------------------------------
#endif