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[thin_ls] get it working with a metadata snap

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This commit is contained in:
Joe Thornber 2016-01-20 14:45:38 +00:00
parent 8ec37aedd2
commit f385198cfc
1 changed files with 31 additions and 10 deletions
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41
thin-provisioning/thin_ls.cc
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@ -46,8 +46,8 @@ using namespace thin_provisioning;
namespace {
class mapping_set {
public:
mapping_set(block_address nr_blocks)
: bits_(nr_blocks * 2, false) {
mapping_set()
: bits_(10240, false) {
}
enum block_state {
@ -57,15 +57,15 @@ namespace {
};
void inc(block_address b) {
if (bits_[b * 2])
bits_[b * 2 + 1] = true; // shared
if (get_bit(b * 2))
set_bit(b * 2 + 1, true); // shared
else
bits_[b * 2] = true; // exclusive
set_bit(b * 2, true); // exclusive
}
block_state get_state(block_address b) const {
if (bits_[b * 2]) {
if (bits_[b * 2 + 1])
if (get_bit(b * 2)) {
if (get_bit(b * 2 + 1))
return SHARED;
else
return EXCLUSIVE;
@ -74,7 +74,27 @@ namespace {
}
private:
vector<bool> bits_;
void ensure_size(block_address bit) const {
if (bit >= bits_.size()) {
unsigned new_size = bits_.size() * 2;
while (new_size < bit)
new_size *= 2;
bits_.resize(new_size, false);
}
}
bool get_bit(block_address bit) const {
ensure_size(bit);
return bits_[bit];
}
void set_bit(block_address bit, bool v) {
ensure_size(bit);
bits_[bit] = v;
}
mutable vector<bool> bits_;
};
//------------------------------------------------
@ -289,7 +309,8 @@ namespace {
void ls_(string const &path, ostream &out, struct flags &flags) {
grid_layout grid;
block_manager<>::ptr bm(open_bm(path, block_manager<>::READ_ONLY));
block_manager<>::ptr bm(open_bm(path, block_manager<>::READ_ONLY,
!flags.use_metadata_snap));
metadata::ptr md;
if (flags.use_metadata_snap)
@ -303,7 +324,7 @@ namespace {
device_tree_detail::damage_visitor::ptr dd_policy(details_damage_policy());
walk_device_tree(*md->details_, de, *dd_policy);
mapping_set mappings(md->data_sm_->get_nr_blocks());
mapping_set mappings;
dd_map::const_iterator it;
dd_map const &map = de.get_details();