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[cache_dump, cache_restore] restore/dump cycle works

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This commit is contained in:
Joe Thornber
2013-09-19 13:45:56 +01:00
parent c476de1756
commit 61e90998c0
13 changed files with 129 additions and 39 deletions
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71
caching/metadata.cc
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@@ -1,4 +1,5 @@
#include "caching/metadata.h"
#include "caching/superblock.h"
#include "persistent-data/space-maps/core.h"
using namespace caching;
@@ -27,18 +28,6 @@ namespace {
lhs->set_count(b, rhs->get_count(b));
}
}
void init_superblock(superblock &sb) {
#if 0
sb.magic_ = SUPERBLOCK_MAGIC;
sb.version_ = 1;
sb.data_mapping_root_ = mappings_->get_root();
sb.device_details_root_ = details_->get_root();
sb.data_block_size_ = data_block_size;
sb.metadata_block_size_ = MD_BLOCK_SIZE;
sb.metadata_nr_blocks_ = tm_->get_bm()->get_nr_blocks();
#endif
}
}
//----------------------------------------------------------------
@@ -46,22 +35,16 @@ namespace {
metadata::metadata(block_manager<>::ptr bm, open_type ot)
{
switch (ot) {
case OPEN:
throw runtime_error("not implemented");
case CREATE:
create_metadata(bm);
break;
case CREATE:
tm_ = open_tm(bm);
space_map::ptr core = tm_->get_sm();
metadata_sm_ = create_metadata_sm(tm_, tm_->get_bm()->get_nr_blocks());
copy_space_maps(metadata_sm_, core);
tm_->set_sm(metadata_sm_);
case OPEN:
open_metadata(bm);
break;
mappings_ = mapping_array::ptr(new mapping_array(tm_, mapping_array::ref_counter()));
// hints_ = hint_array::ptr(new hint_array(tm_));
::memset(&sb_, 0, sizeof(sb_));
init_superblock(sb_);
default:
throw runtime_error("unhandled open_type");
}
}
@@ -77,4 +60,42 @@ metadata::commit()
superblock_traits::pack(sb_, *disk);
}
void
metadata::init_superblock()
{
#if 0
sb_.magic_ = SUPERBLOCK_MAGIC;
sb_.version_ = 1;
sb_.data_mapping_root_ = mappings_->get_root();
sb_.device_details_root_ = details_->get_root();
sb_.data_block_size_ = data_block_size;
sb_.metadata_block_size_ = MD_BLOCK_SIZE;
sb_.metadata_nr_blocks_ = tm_->get_bm()->get_nr_blocks();
#endif
}
void
metadata::create_metadata(block_manager<>::ptr bm)
{
tm_ = open_tm(bm);
::memset(&sb_, 0, sizeof(sb_));
init_superblock();
space_map::ptr core = tm_->get_sm();
metadata_sm_ = create_metadata_sm(tm_, tm_->get_bm()->get_nr_blocks());
copy_space_maps(metadata_sm_, core);
tm_->set_sm(metadata_sm_);
mappings_ = mapping_array::ptr(new mapping_array(tm_, mapping_array::ref_counter()));
// hints_ = hint_array::ptr(new hint_array(tm_));
}
void
metadata::open_metadata(block_manager<>::ptr bm)
{
tm_ = open_tm(bm);
sb_ = read_superblock(tm_->get_bm());
}
//----------------------------------------------------------------