X-Git-Url: https://gerrit.opnfv.org/gerrit/gitweb?a=blobdiff_plain;f=src%2Fceph%2Fsrc%2Frgw%2Frgw_orphan.cc;fp=src%2Fceph%2Fsrc%2Frgw%2Frgw_orphan.cc;h=05552782f149d61e3ad75dad0ea65cc169bfce5e;hb=812ff6ca9fcd3e629e49d4328905f33eee8ca3f5;hp=0000000000000000000000000000000000000000;hpb=15280273faafb77777eab341909a3f495cf248d9;p=stor4nfv.git

diff --git a/src/ceph/src/rgw/rgw_orphan.cc b/src/ceph/src/rgw/rgw_orphan.cc
new file mode 100644
index 0000000..0555278
--- /dev/null
+++ b/src/ceph/src/rgw/rgw_orphan.cc
@@ -0,0 +1,862 @@
+// -*- mode:C++; tab-width:8; c-basic-offset:2; indent-tabs-mode:t -*-
+// vim: ts=8 sw=2 smarttab
+
+#include <string>
+
+using namespace std;
+
+#include "common/config.h"
+#include "common/Formatter.h"
+#include "common/errno.h"
+
+#include "rgw_rados.h"
+#include "rgw_orphan.h"
+
+#define dout_subsys ceph_subsys_rgw
+
+#define DEFAULT_NUM_SHARDS 64
+
+static string obj_fingerprint(const string& oid, const char *force_ns = NULL)
+{
+  ssize_t pos = oid.find('_');
+  if (pos < 0) {
+    cerr << "ERROR: object does not have a bucket marker: " << oid << std::endl;
+  }
+
+  string obj_marker = oid.substr(0, pos);
+
+  rgw_obj_key key;
+
+  rgw_obj_key::parse_raw_oid(oid.substr(pos + 1), &key);
+
+  if (key.ns.empty()) {
+    return oid;
+  }
+
+  string s = oid;
+
+  if (force_ns) {
+    rgw_bucket b;
+    rgw_obj new_obj(b, key);
+    s = obj_marker + "_" + new_obj.get_oid();
+  }
+
+  /* cut out suffix */
+  size_t i = s.size() - 1;
+  for (; i >= s.size() - 10; --i) {
+    char c = s[i];
+    if (!isdigit(c) && c != '.' && c != '_') {
+      break;
+    }
+  }
+
+  return s.substr(0, i + 1);
+}
+
+int RGWOrphanStore::read_job(const string& job_name, RGWOrphanSearchState & state)
+{
+  set<string> keys;
+  map<string, bufferlist> vals;
+  keys.insert(job_name);
+  int r = ioctx.omap_get_vals_by_keys(oid, keys, &vals);
+  if (r < 0) {
+    return r;
+  }
+
+  map<string, bufferlist>::iterator iter = vals.find(job_name);
+  if (iter == vals.end()) {
+    return -ENOENT;
+  }
+
+  try {
+    bufferlist& bl = iter->second;
+    ::decode(state, bl);
+  } catch (buffer::error& err) {
+    lderr(store->ctx()) << "ERROR: could not decode buffer" << dendl;
+    return -EIO;
+  }
+
+  return 0;
+}
+
+int RGWOrphanStore::write_job(const string& job_name, const RGWOrphanSearchState& state)
+{
+  map<string, bufferlist> vals;
+  bufferlist bl;
+  ::encode(state, bl);
+  vals[job_name] = bl;
+  int r = ioctx.omap_set(oid, vals);
+  if (r < 0) {
+    return r;
+  }
+
+  return 0;
+}
+
+int RGWOrphanStore::remove_job(const string& job_name)
+{
+  set<string> keys;
+  keys.insert(job_name);
+
+  int r = ioctx.omap_rm_keys(oid, keys);
+  if (r < 0) {
+    return r;
+  }
+
+  return 0;
+}
+
+int RGWOrphanStore::list_jobs(map <string,RGWOrphanSearchState>& job_list)
+{
+  map <string,bufferlist> vals;
+  int MAX_READ=1024;
+  string marker="";
+  int r = 0;
+
+  // loop through all the omap vals from index object, storing them to job_list,
+  // read in batches of 1024, we update the marker every iteration and exit the
+  // loop when we find that total size read out is less than batch size
+  do {
+    r = ioctx.omap_get_vals(oid, marker, MAX_READ, &vals);
+    if (r < 0) {
+      return r;
+    }
+    r = vals.size();
+
+    for (const auto &it : vals) {
+      marker=it.first;
+      RGWOrphanSearchState state;
+      try {
+        bufferlist bl = it.second;
+        ::decode(state, bl);
+      } catch (buffer::error& err) {
+        lderr(store->ctx()) << "ERROR: could not decode buffer" << dendl;
+        return -EIO;
+      }
+      job_list[it.first] = state;
+    }
+  } while (r == MAX_READ);
+
+  return 0;
+}
+
+int RGWOrphanStore::init()
+{
+  rgw_pool& log_pool = store->get_zone_params().log_pool;
+  int r = rgw_init_ioctx(store->get_rados_handle(), log_pool, ioctx);
+  if (r < 0) {
+    cerr << "ERROR: failed to open log pool (" << log_pool << " ret=" << r << std::endl;
+    return r;
+  }
+
+  return 0;
+}
+
+int RGWOrphanStore::store_entries(const string& oid, const map<string, bufferlist>& entries)
+{
+  librados::ObjectWriteOperation op;
+  op.omap_set(entries);
+  cout << "storing " << entries.size() << " entries at " << oid << std::endl;
+  ldout(store->ctx(), 20) << "storing " << entries.size() << " entries at " << oid << ": " << dendl;
+  for (map<string, bufferlist>::const_iterator iter = entries.begin(); iter != entries.end(); ++iter) {
+    ldout(store->ctx(), 20) << " > " << iter->first << dendl;
+  }
+  int ret = ioctx.operate(oid, &op);
+  if (ret < 0) {
+    lderr(store->ctx()) << "ERROR: " << __func__ << "(" << oid << ") returned ret=" << ret << dendl;
+  }
+  
+  return 0;
+}
+
+int RGWOrphanStore::read_entries(const string& oid, const string& marker, map<string, bufferlist> *entries, bool *truncated)
+{
+#define MAX_OMAP_GET 100
+  int ret = ioctx.omap_get_vals(oid, marker, MAX_OMAP_GET, entries);
+  if (ret < 0 && ret != -ENOENT) {
+    cerr << "ERROR: " << __func__ << "(" << oid << ") returned ret=" << cpp_strerror(-ret) << std::endl;
+  }
+
+  *truncated = (entries->size() == MAX_OMAP_GET);
+
+  return 0;
+}
+
+int RGWOrphanSearch::init(const string& job_name, RGWOrphanSearchInfo *info) {
+  int r = orphan_store.init();
+  if (r < 0) {
+    return r;
+  }
+
+  RGWOrphanSearchState state;
+  r = orphan_store.read_job(job_name, state);
+  if (r < 0 && r != -ENOENT) {
+    lderr(store->ctx()) << "ERROR: failed to read state ret=" << r << dendl;
+    return r;
+  }
+
+  if (r == 0) {
+    search_info = state.info;
+    search_stage = state.stage;
+  } else if (info) { /* r == -ENOENT, initiate a new job if info was provided */ 
+    search_info = *info;
+    search_info.job_name = job_name;
+    search_info.num_shards = (info->num_shards ? info->num_shards : DEFAULT_NUM_SHARDS);
+    search_info.start_time = ceph_clock_now();
+    search_stage = RGWOrphanSearchStage(ORPHAN_SEARCH_STAGE_INIT);
+
+    r = save_state();
+    if (r < 0) {
+      lderr(store->ctx()) << "ERROR: failed to write state ret=" << r << dendl;
+      return r;
+    }
+  } else {
+      lderr(store->ctx()) << "ERROR: job not found" << dendl;
+      return r;
+  }
+
+  index_objs_prefix = RGW_ORPHAN_INDEX_PREFIX + string(".");
+  index_objs_prefix += job_name;
+
+  for (int i = 0; i < search_info.num_shards; i++) {
+    char buf[128];
+
+    snprintf(buf, sizeof(buf), "%s.rados.%d", index_objs_prefix.c_str(), i);
+    all_objs_index[i] = buf;
+
+    snprintf(buf, sizeof(buf), "%s.buckets.%d", index_objs_prefix.c_str(), i);
+    buckets_instance_index[i] = buf;
+
+    snprintf(buf, sizeof(buf), "%s.linked.%d", index_objs_prefix.c_str(), i);
+    linked_objs_index[i] = buf;
+  }
+  return 0;
+}
+
+int RGWOrphanSearch::log_oids(map<int, string>& log_shards, map<int, list<string> >& oids)
+{
+  map<int, list<string> >::iterator miter = oids.begin();
+
+  list<log_iter_info> liters; /* a list of iterator pairs for begin and end */
+
+  for (; miter != oids.end(); ++miter) {
+    log_iter_info info;
+    info.oid = log_shards[miter->first];
+    info.cur = miter->second.begin();
+    info.end = miter->second.end();
+    liters.push_back(info);
+  }
+
+  list<log_iter_info>::iterator list_iter;
+  while (!liters.empty()) {
+     list_iter = liters.begin();
+
+     while (list_iter != liters.end()) {
+       log_iter_info& cur_info = *list_iter;
+
+       list<string>::iterator& cur = cur_info.cur;
+       list<string>::iterator& end = cur_info.end;
+
+       map<string, bufferlist> entries;
+#define MAX_OMAP_SET_ENTRIES 100
+       for (int j = 0; cur != end && j != MAX_OMAP_SET_ENTRIES; ++cur, ++j) {
+         ldout(store->ctx(), 20) << "adding obj: " << *cur << dendl;
+         entries[*cur] = bufferlist();
+       }
+
+       int ret = orphan_store.store_entries(cur_info.oid, entries);
+       if (ret < 0) {
+         return ret;
+       }
+       list<log_iter_info>::iterator tmp = list_iter;
+       ++list_iter;
+       if (cur == end) {
+         liters.erase(tmp);
+       }
+     }
+  }
+  return 0;
+}
+
+int RGWOrphanSearch::build_all_oids_index()
+{
+  librados::IoCtx ioctx;
+
+  int ret = rgw_init_ioctx(store->get_rados_handle(), search_info.pool, ioctx);
+  if (ret < 0) {
+    lderr(store->ctx()) << __func__ << ": rgw_init_ioctx() returned ret=" << ret << dendl;
+    return ret;
+  }
+
+  ioctx.set_namespace(librados::all_nspaces);
+  librados::NObjectIterator i = ioctx.nobjects_begin();
+  librados::NObjectIterator i_end = ioctx.nobjects_end();
+
+  map<int, list<string> > oids;
+
+  int count = 0;
+  uint64_t total = 0;
+
+  cout << "logging all objects in the pool" << std::endl;
+
+  for (; i != i_end; ++i) {
+    string nspace = i->get_nspace();
+    string oid = i->get_oid();
+    string locator = i->get_locator();
+
+    ssize_t pos = oid.find('_');
+    if (pos < 0) {
+      cout << "unidentified oid: " << oid << ", skipping" << std::endl;
+      /* what is this object, oids should be in the format of <bucket marker>_<obj>,
+       * skip this entry
+       */
+      continue;
+    }
+    string stripped_oid = oid.substr(pos + 1);
+    rgw_obj_key key;
+    if (!rgw_obj_key::parse_raw_oid(stripped_oid, &key)) {
+      cout << "cannot parse oid: " << oid << ", skipping" << std::endl;
+      continue;
+    }
+
+    if (key.ns.empty()) {
+      /* skipping head objects, we don't want to remove these as they are mutable and
+       * cleaning them up is racy (can race with object removal and a later recreation)
+       */
+      cout << "skipping head object: oid=" << oid << std::endl;
+      continue;
+    }
+
+    string oid_fp = obj_fingerprint(oid);
+
+    ldout(store->ctx(), 20) << "oid_fp=" << oid_fp << dendl;
+
+    int shard = orphan_shard(oid_fp);
+    oids[shard].push_back(oid);
+
+#define COUNT_BEFORE_FLUSH 1000
+    ++total;
+    if (++count >= COUNT_BEFORE_FLUSH) {
+      ldout(store->ctx(), 1) << "iterated through " << total << " objects" << dendl;
+      ret = log_oids(all_objs_index, oids);
+      if (ret < 0) {
+        cerr << __func__ << ": ERROR: log_oids() returned ret=" << ret << std::endl;
+        return ret;
+      }
+      count = 0;
+      oids.clear();
+    }
+  }
+  ret = log_oids(all_objs_index, oids);
+  if (ret < 0) {
+    cerr << __func__ << ": ERROR: log_oids() returned ret=" << ret << std::endl;
+    return ret;
+  }
+  
+  return 0;
+}
+
+int RGWOrphanSearch::build_buckets_instance_index()
+{
+  void *handle;
+  int max = 1000;
+  string section = "bucket.instance";
+  int ret = store->meta_mgr->list_keys_init(section, &handle);
+  if (ret < 0) {
+    lderr(store->ctx()) << "ERROR: can't get key: " << cpp_strerror(-ret) << dendl;
+    return -ret;
+  }
+
+  map<int, list<string> > instances;
+
+  bool truncated;
+
+  RGWObjectCtx obj_ctx(store);
+
+  int count = 0;
+  uint64_t total = 0;
+
+  do {
+    list<string> keys;
+    ret = store->meta_mgr->list_keys_next(handle, max, keys, &truncated);
+    if (ret < 0) {
+      lderr(store->ctx()) << "ERROR: lists_keys_next(): " << cpp_strerror(-ret) << dendl;
+      return -ret;
+    }
+
+    for (list<string>::iterator iter = keys.begin(); iter != keys.end(); ++iter) {
+      ++total;
+      ldout(store->ctx(), 10) << "bucket_instance=" << *iter << " total=" << total << dendl;
+      int shard = orphan_shard(*iter);
+      instances[shard].push_back(*iter);
+
+      if (++count >= COUNT_BEFORE_FLUSH) {
+        ret = log_oids(buckets_instance_index, instances);
+        if (ret < 0) {
+          lderr(store->ctx()) << __func__ << ": ERROR: log_oids() returned ret=" << ret << dendl;
+          return ret;
+        }
+        count = 0;
+        instances.clear();
+      }
+    }
+
+  } while (truncated);
+
+  ret = log_oids(buckets_instance_index, instances);
+  if (ret < 0) {
+    lderr(store->ctx()) << __func__ << ": ERROR: log_oids() returned ret=" << ret << dendl;
+    return ret;
+  }
+  store->meta_mgr->list_keys_complete(handle);
+
+  return 0;
+}
+
+int RGWOrphanSearch::handle_stat_result(map<int, list<string> >& oids, RGWRados::Object::Stat::Result& result)
+{
+  set<string> obj_oids;
+  rgw_bucket& bucket = result.obj.bucket;
+  if (!result.has_manifest) { /* a very very old object, or part of a multipart upload during upload */
+    const string loc = bucket.bucket_id + "_" + result.obj.get_oid();
+    obj_oids.insert(obj_fingerprint(loc));
+
+    /*
+     * multipart parts don't have manifest on them, it's in the meta object. Instead of reading the
+     * meta object, just add a "shadow" object to the mix
+     */
+    obj_oids.insert(obj_fingerprint(loc, "shadow"));
+  } else {
+    RGWObjManifest& manifest = result.manifest;
+
+    RGWObjManifest::obj_iterator miter;
+    for (miter = manifest.obj_begin(); miter != manifest.obj_end(); ++miter) {
+      const rgw_raw_obj& loc = miter.get_location().get_raw_obj(store);
+      string s = loc.oid;
+      obj_oids.insert(obj_fingerprint(s));
+    }
+  }
+
+  for (set<string>::iterator iter = obj_oids.begin(); iter != obj_oids.end(); ++iter) {
+    ldout(store->ctx(), 20) << __func__ << ": oid for obj=" << result.obj << ": " << *iter << dendl;
+
+    int shard = orphan_shard(*iter);
+    oids[shard].push_back(*iter);
+  }
+
+  return 0;
+}
+
+int RGWOrphanSearch::pop_and_handle_stat_op(map<int, list<string> >& oids, std::deque<RGWRados::Object::Stat>& ops)
+{
+  RGWRados::Object::Stat& front_op = ops.front();
+
+  int ret = front_op.wait();
+  if (ret < 0) {
+    if (ret != -ENOENT) {
+      lderr(store->ctx()) << "ERROR: stat_async() returned error: " << cpp_strerror(-ret) << dendl;
+    }
+    goto done;
+  }
+  ret = handle_stat_result(oids, front_op.result);
+  if (ret < 0) {
+    lderr(store->ctx()) << "ERROR: handle_stat_response() returned error: " << cpp_strerror(-ret) << dendl;
+  }
+done:
+  ops.pop_front();
+  return ret;
+}
+
+int RGWOrphanSearch::build_linked_oids_for_bucket(const string& bucket_instance_id, map<int, list<string> >& oids)
+{
+  ldout(store->ctx(), 10) << "building linked oids for bucket instance: " << bucket_instance_id << dendl;
+  RGWBucketInfo bucket_info;
+  RGWObjectCtx obj_ctx(store);
+  int ret = store->get_bucket_instance_info(obj_ctx, bucket_instance_id, bucket_info, NULL, NULL);
+  if (ret < 0) {
+    if (ret == -ENOENT) {
+      /* probably raced with bucket removal */
+      return 0;
+    }
+    lderr(store->ctx()) << __func__ << ": ERROR: RGWRados::get_bucket_instance_info() returned ret=" << ret << dendl;
+    return ret;
+  }
+
+  RGWRados::Bucket target(store, bucket_info);
+  RGWRados::Bucket::List list_op(&target);
+
+  string marker;
+  list_op.params.marker = rgw_obj_key(marker);
+  list_op.params.list_versions = true;
+  list_op.params.enforce_ns = false;
+
+  bool truncated;
+
+  deque<RGWRados::Object::Stat> stat_ops;
+
+  int count = 0;
+
+  do {
+    vector<rgw_bucket_dir_entry> result;
+
+#define MAX_LIST_OBJS_ENTRIES 100
+    ret = list_op.list_objects(MAX_LIST_OBJS_ENTRIES, &result, NULL, &truncated);
+    if (ret < 0) {
+      cerr << "ERROR: store->list_objects(): " << cpp_strerror(-ret) << std::endl;
+      return -ret;
+    }
+
+    for (vector<rgw_bucket_dir_entry>::iterator iter = result.begin(); iter != result.end(); ++iter) {
+      rgw_bucket_dir_entry& entry = *iter;
+      if (entry.key.instance.empty()) {
+        ldout(store->ctx(), 20) << "obj entry: " << entry.key.name << dendl;
+      } else {
+        ldout(store->ctx(), 20) << "obj entry: " << entry.key.name << " [" << entry.key.instance << "]" << dendl;
+      }
+
+      ldout(store->ctx(), 20) << __func__ << ": entry.key.name=" << entry.key.name << " entry.key.instance=" << entry.key.instance << dendl;
+      rgw_obj obj(bucket_info.bucket, entry.key);
+
+      RGWRados::Object op_target(store, bucket_info, obj_ctx, obj);
+
+      stat_ops.push_back(RGWRados::Object::Stat(&op_target));
+      RGWRados::Object::Stat& op = stat_ops.back();
+
+
+      ret = op.stat_async();
+      if (ret < 0) {
+        lderr(store->ctx()) << "ERROR: stat_async() returned error: " << cpp_strerror(-ret) << dendl;
+        return ret;
+      }
+      if (stat_ops.size() >= max_concurrent_ios) {
+        ret = pop_and_handle_stat_op(oids, stat_ops);
+        if (ret < 0) {
+          if (ret != -ENOENT) {
+            lderr(store->ctx()) << "ERROR: stat_async() returned error: " << cpp_strerror(-ret) << dendl;
+          }
+        }
+      }
+      if (++count >= COUNT_BEFORE_FLUSH) {
+        ret = log_oids(linked_objs_index, oids);
+        if (ret < 0) {
+          cerr << __func__ << ": ERROR: log_oids() returned ret=" << ret << std::endl;
+          return ret;
+        }
+        count = 0;
+        oids.clear();
+      }
+    }
+  } while (truncated);
+
+  while (!stat_ops.empty()) {
+    ret = pop_and_handle_stat_op(oids, stat_ops);
+    if (ret < 0) {
+      if (ret != -ENOENT) {
+        lderr(store->ctx()) << "ERROR: stat_async() returned error: " << cpp_strerror(-ret) << dendl;
+      }
+    }
+  }
+
+  return 0;
+}
+
+int RGWOrphanSearch::build_linked_oids_index()
+{
+  map<int, list<string> > oids;
+  map<int, string>::iterator iter = buckets_instance_index.find(search_stage.shard);
+  for (; iter != buckets_instance_index.end(); ++iter) {
+    ldout(store->ctx(), 0) << "building linked oids index: " << iter->first << "/" << buckets_instance_index.size() << dendl;
+    bool truncated;
+
+    string oid = iter->second;
+
+    do {
+      map<string, bufferlist> entries;
+      int ret = orphan_store.read_entries(oid, search_stage.marker, &entries, &truncated);
+      if (ret == -ENOENT) {
+        truncated = false;
+        ret = 0;
+      }
+
+      if (ret < 0) {
+        lderr(store->ctx()) << __func__ << ": ERROR: read_entries() oid=" << oid << " returned ret=" << ret << dendl;
+        return ret;
+      }
+
+      if (entries.empty()) {
+        break;
+      }
+
+      for (map<string, bufferlist>::iterator eiter = entries.begin(); eiter != entries.end(); ++eiter) {
+        ldout(store->ctx(), 20) << " indexed entry: " << eiter->first << dendl;
+        ret = build_linked_oids_for_bucket(eiter->first, oids);
+        if (ret < 0) {
+          lderr(store->ctx()) << __func__ << ": ERROR: build_linked_oids_for_bucket() indexed entry=" << eiter->first
+                              << " returned ret=" << ret << dendl;
+          return ret;
+        }
+      }
+
+      search_stage.shard = iter->first;
+      search_stage.marker = entries.rbegin()->first; /* last entry */
+    } while (truncated);
+
+    search_stage.marker.clear();
+  }
+
+  int ret = log_oids(linked_objs_index, oids);
+  if (ret < 0) {
+    cerr << __func__ << ": ERROR: log_oids() returned ret=" << ret << std::endl;
+    return ret;
+  }
+
+  ret = save_state();
+  if (ret < 0) {
+    cerr << __func__ << ": ERROR: failed to write state ret=" << ret << std::endl;
+    return ret;
+  }
+
+  return 0;
+}
+
+class OMAPReader {
+  librados::IoCtx ioctx;
+  string oid;
+
+  map<string, bufferlist> entries;
+  map<string, bufferlist>::iterator iter;
+  string marker;
+  bool truncated;
+
+public:
+  OMAPReader(librados::IoCtx& _ioctx, const string& _oid) : ioctx(_ioctx), oid(_oid), truncated(true) {
+    iter = entries.end();
+  }
+
+  int get_next(string *key, bufferlist *pbl, bool *done);
+};
+
+int OMAPReader::get_next(string *key, bufferlist *pbl, bool *done)
+{
+  if (iter != entries.end()) {
+    *key = iter->first;
+    if (pbl) {
+      *pbl = iter->second;
+    }
+    ++iter;
+    *done = false;
+    marker = *key;
+    return 0;
+  }
+
+  if (!truncated) {
+    *done = true;
+    return 0;
+  }
+
+#define MAX_OMAP_GET_ENTRIES 100
+  int ret = ioctx.omap_get_vals(oid, marker, MAX_OMAP_GET_ENTRIES, &entries);
+  if (ret < 0) {
+    if (ret == -ENOENT) {
+      *done = true;
+      return 0;
+    }
+    return ret;
+  }
+
+  truncated = (entries.size() == MAX_OMAP_GET_ENTRIES);
+  iter = entries.begin();
+  return get_next(key, pbl, done);
+}
+
+int RGWOrphanSearch::compare_oid_indexes()
+{
+  assert(linked_objs_index.size() == all_objs_index.size());
+
+  librados::IoCtx& ioctx = orphan_store.get_ioctx();
+
+  librados::IoCtx data_ioctx;
+
+  int ret = rgw_init_ioctx(store->get_rados_handle(), search_info.pool, data_ioctx);
+  if (ret < 0) {
+    lderr(store->ctx()) << __func__ << ": rgw_init_ioctx() returned ret=" << ret << dendl;
+    return ret;
+  }
+
+  uint64_t time_threshold = search_info.start_time.sec() - stale_secs;
+
+  map<int, string>::iterator liter = linked_objs_index.begin();
+  map<int, string>::iterator aiter = all_objs_index.begin();
+
+  for (; liter != linked_objs_index.end(); ++liter, ++aiter) {
+    OMAPReader linked_entries(ioctx, liter->second);
+    OMAPReader all_entries(ioctx, aiter->second);
+
+    bool done;
+
+    string cur_linked;
+    bool linked_done = false;
+
+
+    do {
+      string key;
+      int r = all_entries.get_next(&key, NULL, &done);
+      if (r < 0) {
+        return r;
+      }
+      if (done) {
+        break;
+      }
+
+      string key_fp = obj_fingerprint(key);
+
+      while (cur_linked < key_fp && !linked_done) {
+        r = linked_entries.get_next(&cur_linked, NULL, &linked_done);
+        if (r < 0) {
+          return r;
+        }
+      }
+
+      if (cur_linked == key_fp) {
+        ldout(store->ctx(), 20) << "linked: " << key << dendl;
+        continue;
+      }
+
+      time_t mtime;
+      r = data_ioctx.stat(key, NULL, &mtime);
+      if (r < 0) {
+        if (r != -ENOENT) {
+          lderr(store->ctx()) << "ERROR: ioctx.stat(" << key << ") returned ret=" << r << dendl;
+        }
+        continue;
+      }
+      if (stale_secs && (uint64_t)mtime >= time_threshold) {
+        ldout(store->ctx(), 20) << "skipping: " << key << " (mtime=" << mtime << " threshold=" << time_threshold << ")" << dendl;
+        continue;
+      }
+      ldout(store->ctx(), 20) << "leaked: " << key << dendl;
+      cout << "leaked: " << key << std::endl;
+    } while (!done);
+  }
+
+  return 0;
+}
+
+int RGWOrphanSearch::run()
+{
+  int r;
+
+  switch (search_stage.stage) {
+    
+    case ORPHAN_SEARCH_STAGE_INIT:
+      ldout(store->ctx(), 0) << __func__ << "(): initializing state" << dendl;
+      search_stage = RGWOrphanSearchStage(ORPHAN_SEARCH_STAGE_LSPOOL);
+      r = save_state();
+      if (r < 0) {
+        lderr(store->ctx()) << __func__ << ": ERROR: failed to save state, ret=" << r << dendl;
+        return r;
+      }
+      // fall through
+    case ORPHAN_SEARCH_STAGE_LSPOOL:
+      ldout(store->ctx(), 0) << __func__ << "(): building index of all objects in pool" << dendl;
+      r = build_all_oids_index();
+      if (r < 0) {
+        lderr(store->ctx()) << __func__ << ": ERROR: build_all_objs_index returned ret=" << r << dendl;
+        return r;
+      }
+
+      search_stage = RGWOrphanSearchStage(ORPHAN_SEARCH_STAGE_LSBUCKETS);
+      r = save_state();
+      if (r < 0) {
+        lderr(store->ctx()) << __func__ << ": ERROR: failed to save state, ret=" << r << dendl;
+        return r;
+      }
+      // fall through
+
+    case ORPHAN_SEARCH_STAGE_LSBUCKETS:
+      ldout(store->ctx(), 0) << __func__ << "(): building index of all bucket indexes" << dendl;
+      r = build_buckets_instance_index();
+      if (r < 0) {
+        lderr(store->ctx()) << __func__ << ": ERROR: build_all_objs_index returned ret=" << r << dendl;
+        return r;
+      }
+
+      search_stage = RGWOrphanSearchStage(ORPHAN_SEARCH_STAGE_ITERATE_BI);
+      r = save_state();
+      if (r < 0) {
+        lderr(store->ctx()) << __func__ << ": ERROR: failed to save state, ret=" << r << dendl;
+        return r;
+      }
+      // fall through
+
+
+    case ORPHAN_SEARCH_STAGE_ITERATE_BI:
+      ldout(store->ctx(), 0) << __func__ << "(): building index of all linked objects" << dendl;
+      r = build_linked_oids_index();
+      if (r < 0) {
+        lderr(store->ctx()) << __func__ << ": ERROR: build_all_objs_index returned ret=" << r << dendl;
+        return r;
+      }
+
+      search_stage = RGWOrphanSearchStage(ORPHAN_SEARCH_STAGE_COMPARE);
+      r = save_state();
+      if (r < 0) {
+        lderr(store->ctx()) << __func__ << ": ERROR: failed to save state, ret=" << r << dendl;
+        return r;
+      }
+      // fall through
+
+    case ORPHAN_SEARCH_STAGE_COMPARE:
+      r = compare_oid_indexes();
+      if (r < 0) {
+        lderr(store->ctx()) << __func__ << ": ERROR: build_all_objs_index returned ret=" << r << dendl;
+        return r;
+      }
+
+      break;
+
+    default:
+      ceph_abort();
+  };
+
+  return 0;
+}
+
+
+int RGWOrphanSearch::remove_index(map<int, string>& index)
+{
+  librados::IoCtx& ioctx = orphan_store.get_ioctx();
+
+  for (map<int, string>::iterator iter = index.begin(); iter != index.end(); ++iter) {
+    int r = ioctx.remove(iter->second);
+    if (r < 0) {
+      if (r != -ENOENT) {
+        ldout(store->ctx(), 0) << "ERROR: couldn't remove " << iter->second << ": ret=" << r << dendl;
+      }
+    }
+  }
+  return 0;
+}
+
+int RGWOrphanSearch::finish()
+{
+  int r = remove_index(all_objs_index);
+  if (r < 0) {
+    ldout(store->ctx(), 0) << "ERROR: remove_index(" << all_objs_index << ") returned ret=" << r << dendl;
+  }
+  r = remove_index(buckets_instance_index);
+  if (r < 0) {
+    ldout(store->ctx(), 0) << "ERROR: remove_index(" << buckets_instance_index << ") returned ret=" << r << dendl;
+  }
+  r = remove_index(linked_objs_index);
+  if (r < 0) {
+    ldout(store->ctx(), 0) << "ERROR: remove_index(" << linked_objs_index << ") returned ret=" << r << dendl;
+  }
+
+  r = orphan_store.remove_job(search_info.job_name);
+  if (r < 0) {
+    ldout(store->ctx(), 0) << "ERROR: could not remove job name (" << search_info.job_name << ") ret=" << r << dendl;
+  }
+
+  return r;
+}