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[thin_pool] Complete device deletion

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This commit is contained in:
Ming-Hung Tsai 2020-06-02 11:49:14 +08:00
parent f803c44e93
commit a5614f7db2
1 changed files with 21 additions and 0 deletions
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21
thin-provisioning/thin_pool.cc
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@ -184,7 +184,28 @@ void
thin_pool::del(thin_dev_t dev)
{
uint64_t key[1] = {dev};
thin::ptr td = open_device(dev);
if (td->open_count_ > 1) {
close_device(td);
throw std::runtime_error("device busy");
}
thin_devices_.erase(dev);
dev_tree::maybe_value mtree_root = md_->mappings_top_level_->lookup(key);
if (!device_exists(dev) || !mtree_root)
throw std::runtime_error("unknown device");
// TODO: trigger subtree deletion from the mtree_ref_counter,
// like the kenrel subtree_dec() does.
single_mapping_tree mtree(*md_->tm_, *mtree_root,
mapping_tree_detail::block_time_ref_counter(md_->data_sm_));
mtree.destroy();
md_->details_->remove(key);
md_->mappings_top_level_->remove(key);
md_->mappings_->set_root(md_->mappings_top_level_->get_root()); // FIXME: ugly
}
void