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-rw-r--r--src/rgw/rgw_sync.cc2484
1 files changed, 2484 insertions, 0 deletions
diff --git a/src/rgw/rgw_sync.cc b/src/rgw/rgw_sync.cc
new file mode 100644
index 000000000..8eacd150f
--- /dev/null
+++ b/src/rgw/rgw_sync.cc
@@ -0,0 +1,2484 @@
+// -*- mode:C++; tab-width:8; c-basic-offset:2; indent-tabs-mode:t -*-
+// vim: ts=8 sw=2 smarttab ft=cpp
+
+#include <boost/optional.hpp>
+
+#include "common/ceph_json.h"
+#include "common/RWLock.h"
+#include "common/RefCountedObj.h"
+#include "common/WorkQueue.h"
+#include "common/Throttle.h"
+#include "common/admin_socket.h"
+#include "common/errno.h"
+
+#include "rgw_common.h"
+#include "rgw_zone.h"
+#include "rgw_sync.h"
+#include "rgw_metadata.h"
+#include "rgw_mdlog_types.h"
+#include "rgw_rest_conn.h"
+#include "rgw_tools.h"
+#include "rgw_cr_rados.h"
+#include "rgw_cr_rest.h"
+#include "rgw_http_client.h"
+#include "rgw_sync_trace.h"
+
+#include "cls/lock/cls_lock_client.h"
+
+#include "services/svc_zone.h"
+#include "services/svc_mdlog.h"
+#include "services/svc_meta.h"
+#include "services/svc_cls.h"
+
+#include <boost/asio/yield.hpp>
+
+#define dout_subsys ceph_subsys_rgw
+
+#undef dout_prefix
+#define dout_prefix (*_dout << "meta sync: ")
+
+static string mdlog_sync_status_oid = "mdlog.sync-status";
+static string mdlog_sync_status_shard_prefix = "mdlog.sync-status.shard";
+static string mdlog_sync_full_sync_index_prefix = "meta.full-sync.index";
+
+RGWSyncErrorLogger::RGWSyncErrorLogger(rgw::sal::RGWRadosStore *_store, const string &oid_prefix, int _num_shards) : store(_store), num_shards(_num_shards) {
+ for (int i = 0; i < num_shards; i++) {
+ oids.push_back(get_shard_oid(oid_prefix, i));
+ }
+}
+string RGWSyncErrorLogger::get_shard_oid(const string& oid_prefix, int shard_id) {
+ char buf[oid_prefix.size() + 16];
+ snprintf(buf, sizeof(buf), "%s.%d", oid_prefix.c_str(), shard_id);
+ return string(buf);
+}
+
+RGWCoroutine *RGWSyncErrorLogger::log_error_cr(const DoutPrefixProvider *dpp, const string& source_zone, const string& section, const string& name, uint32_t error_code, const string& message) {
+ cls_log_entry entry;
+
+ rgw_sync_error_info info(source_zone, error_code, message);
+ bufferlist bl;
+ encode(info, bl);
+ store->svc()->cls->timelog.prepare_entry(entry, real_clock::now(), section, name, bl);
+
+ uint32_t shard_id = ++counter % num_shards;
+
+
+ return new RGWRadosTimelogAddCR(dpp, store, oids[shard_id], entry);
+}
+
+void RGWSyncBackoff::update_wait_time()
+{
+ if (cur_wait == 0) {
+ cur_wait = 1;
+ } else {
+ cur_wait = (cur_wait << 1);
+ }
+ if (cur_wait >= max_secs) {
+ cur_wait = max_secs;
+ }
+}
+
+void RGWSyncBackoff::backoff_sleep()
+{
+ update_wait_time();
+ sleep(cur_wait);
+}
+
+void RGWSyncBackoff::backoff(RGWCoroutine *op)
+{
+ update_wait_time();
+ op->wait(utime_t(cur_wait, 0));
+}
+
+int RGWBackoffControlCR::operate(const DoutPrefixProvider *dpp) {
+ reenter(this) {
+ // retry the operation until it succeeds
+ while (true) {
+ yield {
+ std::lock_guard l{lock};
+ cr = alloc_cr();
+ cr->get();
+ call(cr);
+ }
+ {
+ std::lock_guard l{lock};
+ cr->put();
+ cr = NULL;
+ }
+ if (retcode >= 0) {
+ break;
+ }
+ if (retcode != -EBUSY && retcode != -EAGAIN) {
+ ldout(cct, 0) << "ERROR: RGWBackoffControlCR called coroutine returned " << retcode << dendl;
+ if (exit_on_error) {
+ return set_cr_error(retcode);
+ }
+ }
+ if (reset_backoff) {
+ backoff.reset();
+ }
+ yield backoff.backoff(this);
+ }
+
+ // run an optional finisher
+ yield call(alloc_finisher_cr());
+ if (retcode < 0) {
+ ldout(cct, 0) << "ERROR: call to finisher_cr() failed: retcode=" << retcode << dendl;
+ return set_cr_error(retcode);
+ }
+ return set_cr_done();
+ }
+ return 0;
+}
+
+void rgw_mdlog_info::decode_json(JSONObj *obj) {
+ JSONDecoder::decode_json("num_objects", num_shards, obj);
+ JSONDecoder::decode_json("period", period, obj);
+ JSONDecoder::decode_json("realm_epoch", realm_epoch, obj);
+}
+
+void rgw_mdlog_entry::decode_json(JSONObj *obj) {
+ JSONDecoder::decode_json("id", id, obj);
+ JSONDecoder::decode_json("section", section, obj);
+ JSONDecoder::decode_json("name", name, obj);
+ utime_t ut;
+ JSONDecoder::decode_json("timestamp", ut, obj);
+ timestamp = ut.to_real_time();
+ JSONDecoder::decode_json("data", log_data, obj);
+}
+
+void rgw_mdlog_shard_data::decode_json(JSONObj *obj) {
+ JSONDecoder::decode_json("marker", marker, obj);
+ JSONDecoder::decode_json("truncated", truncated, obj);
+ JSONDecoder::decode_json("entries", entries, obj);
+};
+
+int RGWShardCollectCR::operate(const DoutPrefixProvider *dpp) {
+ reenter(this) {
+ while (spawn_next()) {
+ current_running++;
+
+ while (current_running >= max_concurrent) {
+ int child_ret;
+ yield wait_for_child();
+ if (collect_next(&child_ret)) {
+ current_running--;
+ if (child_ret < 0 && child_ret != -ENOENT) {
+ ldout(cct, 10) << __func__ << ": failed to fetch log status, ret=" << child_ret << dendl;
+ status = child_ret;
+ }
+ }
+ }
+ }
+ while (current_running > 0) {
+ int child_ret;
+ yield wait_for_child();
+ if (collect_next(&child_ret)) {
+ current_running--;
+ if (child_ret < 0 && child_ret != -ENOENT) {
+ ldout(cct, 10) << __func__ << ": failed to fetch log status, ret=" << child_ret << dendl;
+ status = child_ret;
+ }
+ }
+ }
+ if (status < 0) {
+ return set_cr_error(status);
+ }
+ return set_cr_done();
+ }
+ return 0;
+}
+
+class RGWReadRemoteMDLogInfoCR : public RGWShardCollectCR {
+ RGWMetaSyncEnv *sync_env;
+
+ const std::string& period;
+ int num_shards;
+ map<int, RGWMetadataLogInfo> *mdlog_info;
+
+ int shard_id;
+#define READ_MDLOG_MAX_CONCURRENT 10
+
+public:
+ RGWReadRemoteMDLogInfoCR(RGWMetaSyncEnv *_sync_env,
+ const std::string& period, int _num_shards,
+ map<int, RGWMetadataLogInfo> *_mdlog_info) : RGWShardCollectCR(_sync_env->cct, READ_MDLOG_MAX_CONCURRENT),
+ sync_env(_sync_env),
+ period(period), num_shards(_num_shards),
+ mdlog_info(_mdlog_info), shard_id(0) {}
+ bool spawn_next() override;
+};
+
+class RGWListRemoteMDLogCR : public RGWShardCollectCR {
+ RGWMetaSyncEnv *sync_env;
+
+ const std::string& period;
+ map<int, string> shards;
+ int max_entries_per_shard;
+ map<int, rgw_mdlog_shard_data> *result;
+
+ map<int, string>::iterator iter;
+#define READ_MDLOG_MAX_CONCURRENT 10
+
+public:
+ RGWListRemoteMDLogCR(RGWMetaSyncEnv *_sync_env,
+ const std::string& period, map<int, string>& _shards,
+ int _max_entries_per_shard,
+ map<int, rgw_mdlog_shard_data> *_result) : RGWShardCollectCR(_sync_env->cct, READ_MDLOG_MAX_CONCURRENT),
+ sync_env(_sync_env), period(period),
+ max_entries_per_shard(_max_entries_per_shard),
+ result(_result) {
+ shards.swap(_shards);
+ iter = shards.begin();
+ }
+ bool spawn_next() override;
+};
+
+RGWRemoteMetaLog::~RGWRemoteMetaLog()
+{
+ delete error_logger;
+}
+
+int RGWRemoteMetaLog::read_log_info(const DoutPrefixProvider *dpp, rgw_mdlog_info *log_info)
+{
+ rgw_http_param_pair pairs[] = { { "type", "metadata" },
+ { NULL, NULL } };
+
+ int ret = conn->get_json_resource(dpp, "/admin/log", pairs, null_yield, *log_info);
+ if (ret < 0) {
+ ldpp_dout(dpp, 0) << "ERROR: failed to fetch mdlog info" << dendl;
+ return ret;
+ }
+
+ ldpp_dout(dpp, 20) << "remote mdlog, num_shards=" << log_info->num_shards << dendl;
+
+ return 0;
+}
+
+int RGWRemoteMetaLog::read_master_log_shards_info(const DoutPrefixProvider *dpp, const string &master_period, map<int, RGWMetadataLogInfo> *shards_info)
+{
+ if (store->svc()->zone->is_meta_master()) {
+ return 0;
+ }
+
+ rgw_mdlog_info log_info;
+ int ret = read_log_info(dpp, &log_info);
+ if (ret < 0) {
+ return ret;
+ }
+
+ return run(dpp, new RGWReadRemoteMDLogInfoCR(&sync_env, master_period, log_info.num_shards, shards_info));
+}
+
+int RGWRemoteMetaLog::read_master_log_shards_next(const DoutPrefixProvider *dpp, const string& period, map<int, string> shard_markers, map<int, rgw_mdlog_shard_data> *result)
+{
+ if (store->svc()->zone->is_meta_master()) {
+ return 0;
+ }
+
+ return run(dpp, new RGWListRemoteMDLogCR(&sync_env, period, shard_markers, 1, result));
+}
+
+int RGWRemoteMetaLog::init()
+{
+ conn = store->svc()->zone->get_master_conn();
+
+ int ret = http_manager.start();
+ if (ret < 0) {
+ ldpp_dout(dpp, 0) << "failed in http_manager.start() ret=" << ret << dendl;
+ return ret;
+ }
+
+ error_logger = new RGWSyncErrorLogger(store, RGW_SYNC_ERROR_LOG_SHARD_PREFIX, ERROR_LOGGER_SHARDS);
+
+ init_sync_env(&sync_env);
+
+ tn = sync_env.sync_tracer->add_node(sync_env.sync_tracer->root_node, "meta");
+
+ return 0;
+}
+
+void RGWRemoteMetaLog::finish()
+{
+ going_down = true;
+ stop();
+}
+
+#define CLONE_MAX_ENTRIES 100
+
+int RGWMetaSyncStatusManager::init(const DoutPrefixProvider *dpp)
+{
+ if (store->svc()->zone->is_meta_master()) {
+ return 0;
+ }
+
+ if (!store->svc()->zone->get_master_conn()) {
+ ldpp_dout(dpp, -1) << "no REST connection to master zone" << dendl;
+ return -EIO;
+ }
+
+ int r = rgw_init_ioctx(dpp, store->getRados()->get_rados_handle(), store->svc()->zone->get_zone_params().log_pool, ioctx, true);
+ if (r < 0) {
+ ldpp_dout(dpp, -1) << "ERROR: failed to open log pool (" << store->svc()->zone->get_zone_params().log_pool << " ret=" << r << dendl;
+ return r;
+ }
+
+ r = master_log.init();
+ if (r < 0) {
+ ldpp_dout(dpp, -1) << "ERROR: failed to init remote log, r=" << r << dendl;
+ return r;
+ }
+
+ RGWMetaSyncEnv& sync_env = master_log.get_sync_env();
+
+ rgw_meta_sync_status sync_status;
+ r = read_sync_status(dpp, &sync_status);
+ if (r < 0 && r != -ENOENT) {
+ ldpp_dout(dpp, -1) << "ERROR: failed to read sync status, r=" << r << dendl;
+ return r;
+ }
+
+ int num_shards = sync_status.sync_info.num_shards;
+
+ for (int i = 0; i < num_shards; i++) {
+ shard_objs[i] = rgw_raw_obj(store->svc()->zone->get_zone_params().log_pool, sync_env.shard_obj_name(i));
+ }
+
+ std::unique_lock wl{ts_to_shard_lock};
+ for (int i = 0; i < num_shards; i++) {
+ clone_markers.push_back(string());
+ utime_shard ut;
+ ut.shard_id = i;
+ ts_to_shard[ut] = i;
+ }
+
+ return 0;
+}
+
+unsigned RGWMetaSyncStatusManager::get_subsys() const
+{
+ return dout_subsys;
+}
+
+std::ostream& RGWMetaSyncStatusManager::gen_prefix(std::ostream& out) const
+{
+ return out << "meta sync: ";
+}
+
+void RGWMetaSyncEnv::init(const DoutPrefixProvider *_dpp, CephContext *_cct, rgw::sal::RGWRadosStore *_store, RGWRESTConn *_conn,
+ RGWAsyncRadosProcessor *_async_rados, RGWHTTPManager *_http_manager,
+ RGWSyncErrorLogger *_error_logger, RGWSyncTraceManager *_sync_tracer) {
+ dpp = _dpp;
+ cct = _cct;
+ store = _store;
+ conn = _conn;
+ async_rados = _async_rados;
+ http_manager = _http_manager;
+ error_logger = _error_logger;
+ sync_tracer = _sync_tracer;
+}
+
+string RGWMetaSyncEnv::status_oid()
+{
+ return mdlog_sync_status_oid;
+}
+
+string RGWMetaSyncEnv::shard_obj_name(int shard_id)
+{
+ char buf[mdlog_sync_status_shard_prefix.size() + 16];
+ snprintf(buf, sizeof(buf), "%s.%d", mdlog_sync_status_shard_prefix.c_str(), shard_id);
+
+ return string(buf);
+}
+
+class RGWAsyncReadMDLogEntries : public RGWAsyncRadosRequest {
+ const DoutPrefixProvider *dpp;
+ rgw::sal::RGWRadosStore *store;
+ RGWMetadataLog *mdlog;
+ int shard_id;
+ int max_entries;
+
+protected:
+ int _send_request(const DoutPrefixProvider *dpp) override {
+ real_time from_time;
+ real_time end_time;
+
+ void *handle;
+
+ mdlog->init_list_entries(shard_id, from_time, end_time, marker, &handle);
+
+ int ret = mdlog->list_entries(dpp, handle, max_entries, entries, &marker, &truncated);
+
+ mdlog->complete_list_entries(handle);
+
+ return ret;
+ }
+public:
+ string marker;
+ list<cls_log_entry> entries;
+ bool truncated;
+
+ RGWAsyncReadMDLogEntries(const DoutPrefixProvider *_dpp, RGWCoroutine *caller, RGWAioCompletionNotifier *cn, rgw::sal::RGWRadosStore *_store,
+ RGWMetadataLog* mdlog, int _shard_id,
+ std::string _marker, int _max_entries)
+ : RGWAsyncRadosRequest(caller, cn), dpp(_dpp), store(_store), mdlog(mdlog),
+ shard_id(_shard_id), max_entries(_max_entries), marker(std::move(_marker)) {}
+};
+
+class RGWReadMDLogEntriesCR : public RGWSimpleCoroutine {
+ RGWMetaSyncEnv *sync_env;
+ RGWMetadataLog *const mdlog;
+ int shard_id;
+ string marker;
+ string *pmarker;
+ int max_entries;
+ list<cls_log_entry> *entries;
+ bool *truncated;
+
+ RGWAsyncReadMDLogEntries *req{nullptr};
+
+public:
+ RGWReadMDLogEntriesCR(RGWMetaSyncEnv *_sync_env, RGWMetadataLog* mdlog,
+ int _shard_id, string*_marker, int _max_entries,
+ list<cls_log_entry> *_entries, bool *_truncated)
+ : RGWSimpleCoroutine(_sync_env->cct), sync_env(_sync_env), mdlog(mdlog),
+ shard_id(_shard_id), pmarker(_marker), max_entries(_max_entries),
+ entries(_entries), truncated(_truncated) {}
+
+ ~RGWReadMDLogEntriesCR() override {
+ if (req) {
+ req->finish();
+ }
+ }
+
+ int send_request(const DoutPrefixProvider *dpp) override {
+ marker = *pmarker;
+ req = new RGWAsyncReadMDLogEntries(dpp, this, stack->create_completion_notifier(),
+ sync_env->store, mdlog, shard_id, marker,
+ max_entries);
+ sync_env->async_rados->queue(req);
+ return 0;
+ }
+
+ int request_complete() override {
+ *pmarker = std::move(req->marker);
+ *entries = std::move(req->entries);
+ *truncated = req->truncated;
+ return req->get_ret_status();
+ }
+};
+
+
+class RGWReadRemoteMDLogShardInfoCR : public RGWCoroutine {
+ RGWMetaSyncEnv *env;
+ RGWRESTReadResource *http_op;
+
+ const std::string& period;
+ int shard_id;
+ RGWMetadataLogInfo *shard_info;
+
+public:
+ RGWReadRemoteMDLogShardInfoCR(RGWMetaSyncEnv *env, const std::string& period,
+ int _shard_id, RGWMetadataLogInfo *_shard_info)
+ : RGWCoroutine(env->store->ctx()), env(env), http_op(NULL),
+ period(period), shard_id(_shard_id), shard_info(_shard_info) {}
+
+ int operate(const DoutPrefixProvider *dpp) override {
+ auto store = env->store;
+ RGWRESTConn *conn = store->svc()->zone->get_master_conn();
+ reenter(this) {
+ yield {
+ char buf[16];
+ snprintf(buf, sizeof(buf), "%d", shard_id);
+ rgw_http_param_pair pairs[] = { { "type" , "metadata" },
+ { "id", buf },
+ { "period", period.c_str() },
+ { "info" , NULL },
+ { NULL, NULL } };
+
+ string p = "/admin/log/";
+
+ http_op = new RGWRESTReadResource(conn, p, pairs, NULL,
+ env->http_manager);
+
+ init_new_io(http_op);
+
+ int ret = http_op->aio_read(dpp);
+ if (ret < 0) {
+ ldpp_dout(env->dpp, 0) << "ERROR: failed to read from " << p << dendl;
+ log_error() << "failed to send http operation: " << http_op->to_str() << " ret=" << ret << std::endl;
+ http_op->put();
+ return set_cr_error(ret);
+ }
+
+ return io_block(0);
+ }
+ yield {
+ int ret = http_op->wait(shard_info, null_yield);
+ http_op->put();
+ if (ret < 0) {
+ return set_cr_error(ret);
+ }
+ return set_cr_done();
+ }
+ }
+ return 0;
+ }
+};
+
+RGWCoroutine* create_read_remote_mdlog_shard_info_cr(RGWMetaSyncEnv *env,
+ const std::string& period,
+ int shard_id,
+ RGWMetadataLogInfo* info)
+{
+ return new RGWReadRemoteMDLogShardInfoCR(env, period, shard_id, info);
+}
+
+class RGWListRemoteMDLogShardCR : public RGWSimpleCoroutine {
+ RGWMetaSyncEnv *sync_env;
+ RGWRESTReadResource *http_op;
+
+ const std::string& period;
+ int shard_id;
+ string marker;
+ uint32_t max_entries;
+ rgw_mdlog_shard_data *result;
+
+public:
+ RGWListRemoteMDLogShardCR(RGWMetaSyncEnv *env, const std::string& period,
+ int _shard_id, const string& _marker, uint32_t _max_entries,
+ rgw_mdlog_shard_data *_result)
+ : RGWSimpleCoroutine(env->store->ctx()), sync_env(env), http_op(NULL),
+ period(period), shard_id(_shard_id), marker(_marker), max_entries(_max_entries), result(_result) {}
+
+ int send_request(const DoutPrefixProvider *dpp) override {
+ RGWRESTConn *conn = sync_env->conn;
+
+ char buf[32];
+ snprintf(buf, sizeof(buf), "%d", shard_id);
+
+ char max_entries_buf[32];
+ snprintf(max_entries_buf, sizeof(max_entries_buf), "%d", (int)max_entries);
+
+ const char *marker_key = (marker.empty() ? "" : "marker");
+
+ rgw_http_param_pair pairs[] = { { "type", "metadata" },
+ { "id", buf },
+ { "period", period.c_str() },
+ { "max-entries", max_entries_buf },
+ { marker_key, marker.c_str() },
+ { NULL, NULL } };
+
+ string p = "/admin/log/";
+
+ http_op = new RGWRESTReadResource(conn, p, pairs, NULL, sync_env->http_manager);
+ init_new_io(http_op);
+
+ int ret = http_op->aio_read(dpp);
+ if (ret < 0) {
+ ldpp_dout(dpp, 0) << "ERROR: failed to read from " << p << dendl;
+ log_error() << "failed to send http operation: " << http_op->to_str() << " ret=" << ret << std::endl;
+ http_op->put();
+ return ret;
+ }
+
+ return 0;
+ }
+
+ int request_complete() override {
+ int ret = http_op->wait(result, null_yield);
+ http_op->put();
+ if (ret < 0 && ret != -ENOENT) {
+ ldpp_dout(sync_env->dpp, 0) << "ERROR: failed to list remote mdlog shard, ret=" << ret << dendl;
+ return ret;
+ }
+ return 0;
+ }
+};
+
+RGWCoroutine* create_list_remote_mdlog_shard_cr(RGWMetaSyncEnv *env,
+ const std::string& period,
+ int shard_id,
+ const std::string& marker,
+ uint32_t max_entries,
+ rgw_mdlog_shard_data *result)
+{
+ return new RGWListRemoteMDLogShardCR(env, period, shard_id, marker,
+ max_entries, result);
+}
+
+bool RGWReadRemoteMDLogInfoCR::spawn_next() {
+ if (shard_id >= num_shards) {
+ return false;
+ }
+ spawn(new RGWReadRemoteMDLogShardInfoCR(sync_env, period, shard_id, &(*mdlog_info)[shard_id]), false);
+ shard_id++;
+ return true;
+}
+
+bool RGWListRemoteMDLogCR::spawn_next() {
+ if (iter == shards.end()) {
+ return false;
+ }
+
+ spawn(new RGWListRemoteMDLogShardCR(sync_env, period, iter->first, iter->second, max_entries_per_shard, &(*result)[iter->first]), false);
+ ++iter;
+ return true;
+}
+
+class RGWInitSyncStatusCoroutine : public RGWCoroutine {
+ RGWMetaSyncEnv *sync_env;
+
+ rgw_meta_sync_info status;
+ vector<RGWMetadataLogInfo> shards_info;
+ boost::intrusive_ptr<RGWContinuousLeaseCR> lease_cr;
+ boost::intrusive_ptr<RGWCoroutinesStack> lease_stack;
+public:
+ RGWInitSyncStatusCoroutine(RGWMetaSyncEnv *_sync_env,
+ const rgw_meta_sync_info &status)
+ : RGWCoroutine(_sync_env->store->ctx()), sync_env(_sync_env),
+ status(status), shards_info(status.num_shards),
+ lease_cr(nullptr), lease_stack(nullptr) {}
+
+ ~RGWInitSyncStatusCoroutine() override {
+ if (lease_cr) {
+ lease_cr->abort();
+ }
+ }
+
+ int operate(const DoutPrefixProvider *dpp) override {
+ int ret;
+ reenter(this) {
+ yield {
+ set_status("acquiring sync lock");
+ uint32_t lock_duration = cct->_conf->rgw_sync_lease_period;
+ string lock_name = "sync_lock";
+ rgw::sal::RGWRadosStore *store = sync_env->store;
+ lease_cr.reset(new RGWContinuousLeaseCR(sync_env->async_rados, store,
+ rgw_raw_obj(store->svc()->zone->get_zone_params().log_pool, sync_env->status_oid()),
+ lock_name, lock_duration, this));
+ lease_stack.reset(spawn(lease_cr.get(), false));
+ }
+ while (!lease_cr->is_locked()) {
+ if (lease_cr->is_done()) {
+ ldpp_dout(dpp, 5) << "lease cr failed, done early " << dendl;
+ set_status("lease lock failed, early abort");
+ return set_cr_error(lease_cr->get_ret_status());
+ }
+ set_sleeping(true);
+ yield;
+ }
+ yield {
+ set_status("writing sync status");
+ rgw::sal::RGWRadosStore *store = sync_env->store;
+ call(new RGWSimpleRadosWriteCR<rgw_meta_sync_info>(dpp, sync_env->async_rados, store->svc()->sysobj,
+ rgw_raw_obj(store->svc()->zone->get_zone_params().log_pool, sync_env->status_oid()),
+ status));
+ }
+
+ if (retcode < 0) {
+ set_status("failed to write sync status");
+ ldpp_dout(dpp, 0) << "ERROR: failed to write sync status, retcode=" << retcode << dendl;
+ yield lease_cr->go_down();
+ return set_cr_error(retcode);
+ }
+ /* fetch current position in logs */
+ set_status("fetching remote log position");
+ yield {
+ for (int i = 0; i < (int)status.num_shards; i++) {
+ spawn(new RGWReadRemoteMDLogShardInfoCR(sync_env, status.period, i,
+ &shards_info[i]), false);
+ }
+ }
+
+ drain_all_but_stack(lease_stack.get()); /* the lease cr still needs to run */
+
+ yield {
+ set_status("updating sync status");
+ for (int i = 0; i < (int)status.num_shards; i++) {
+ rgw_meta_sync_marker marker;
+ RGWMetadataLogInfo& info = shards_info[i];
+ marker.next_step_marker = info.marker;
+ marker.timestamp = info.last_update;
+ rgw::sal::RGWRadosStore *store = sync_env->store;
+ spawn(new RGWSimpleRadosWriteCR<rgw_meta_sync_marker>(dpp,
+ sync_env->async_rados,
+ store->svc()->sysobj,
+ rgw_raw_obj(store->svc()->zone->get_zone_params().log_pool, sync_env->shard_obj_name(i)),
+ marker), true);
+ }
+ }
+ yield {
+ set_status("changing sync state: build full sync maps");
+ status.state = rgw_meta_sync_info::StateBuildingFullSyncMaps;
+ rgw::sal::RGWRadosStore *store = sync_env->store;
+ call(new RGWSimpleRadosWriteCR<rgw_meta_sync_info>(dpp, sync_env->async_rados, store->svc()->sysobj,
+ rgw_raw_obj(store->svc()->zone->get_zone_params().log_pool, sync_env->status_oid()),
+ status));
+ }
+ set_status("drop lock lease");
+ yield lease_cr->go_down();
+ while (collect(&ret, NULL)) {
+ if (ret < 0) {
+ return set_cr_error(ret);
+ }
+ yield;
+ }
+ drain_all();
+ return set_cr_done();
+ }
+ return 0;
+ }
+};
+
+class RGWReadSyncStatusMarkersCR : public RGWShardCollectCR {
+ static constexpr int MAX_CONCURRENT_SHARDS = 16;
+
+ RGWMetaSyncEnv *env;
+ const int num_shards;
+ int shard_id{0};
+ map<uint32_t, rgw_meta_sync_marker>& markers;
+
+ public:
+ RGWReadSyncStatusMarkersCR(RGWMetaSyncEnv *env, int num_shards,
+ map<uint32_t, rgw_meta_sync_marker>& markers)
+ : RGWShardCollectCR(env->cct, MAX_CONCURRENT_SHARDS),
+ env(env), num_shards(num_shards), markers(markers)
+ {}
+ bool spawn_next() override;
+};
+
+bool RGWReadSyncStatusMarkersCR::spawn_next()
+{
+ if (shard_id >= num_shards) {
+ return false;
+ }
+ using CR = RGWSimpleRadosReadCR<rgw_meta_sync_marker>;
+ rgw_raw_obj obj{env->store->svc()->zone->get_zone_params().log_pool,
+ env->shard_obj_name(shard_id)};
+ spawn(new CR(env->dpp, env->async_rados, env->store->svc()->sysobj, obj, &markers[shard_id]), false);
+ shard_id++;
+ return true;
+}
+
+class RGWReadSyncStatusCoroutine : public RGWCoroutine {
+ RGWMetaSyncEnv *sync_env;
+ rgw_meta_sync_status *sync_status;
+
+public:
+ RGWReadSyncStatusCoroutine(RGWMetaSyncEnv *_sync_env,
+ rgw_meta_sync_status *_status)
+ : RGWCoroutine(_sync_env->cct), sync_env(_sync_env), sync_status(_status)
+ {}
+ int operate(const DoutPrefixProvider *dpp) override;
+};
+
+int RGWReadSyncStatusCoroutine::operate(const DoutPrefixProvider *dpp)
+{
+ reenter(this) {
+ // read sync info
+ using ReadInfoCR = RGWSimpleRadosReadCR<rgw_meta_sync_info>;
+ yield {
+ bool empty_on_enoent = false; // fail on ENOENT
+ rgw_raw_obj obj{sync_env->store->svc()->zone->get_zone_params().log_pool,
+ sync_env->status_oid()};
+ call(new ReadInfoCR(dpp, sync_env->async_rados, sync_env->store->svc()->sysobj, obj,
+ &sync_status->sync_info, empty_on_enoent));
+ }
+ if (retcode < 0) {
+ ldpp_dout(dpp, 4) << "failed to read sync status info with "
+ << cpp_strerror(retcode) << dendl;
+ return set_cr_error(retcode);
+ }
+ // read shard markers
+ using ReadMarkersCR = RGWReadSyncStatusMarkersCR;
+ yield call(new ReadMarkersCR(sync_env, sync_status->sync_info.num_shards,
+ sync_status->sync_markers));
+ if (retcode < 0) {
+ ldpp_dout(dpp, 4) << "failed to read sync status markers with "
+ << cpp_strerror(retcode) << dendl;
+ return set_cr_error(retcode);
+ }
+ return set_cr_done();
+ }
+ return 0;
+}
+
+class RGWFetchAllMetaCR : public RGWCoroutine {
+ RGWMetaSyncEnv *sync_env;
+
+ int num_shards;
+
+
+ int ret_status;
+
+ list<string> sections;
+ list<string>::iterator sections_iter;
+
+ struct meta_list_result {
+ list<string> keys;
+ string marker;
+ uint64_t count{0};
+ bool truncated{false};
+
+ void decode_json(JSONObj *obj) {
+ JSONDecoder::decode_json("keys", keys, obj);
+ JSONDecoder::decode_json("marker", marker, obj);
+ JSONDecoder::decode_json("count", count, obj);
+ JSONDecoder::decode_json("truncated", truncated, obj);
+ }
+ } result;
+ list<string>::iterator iter;
+
+ std::unique_ptr<RGWShardedOmapCRManager> entries_index;
+
+ boost::intrusive_ptr<RGWContinuousLeaseCR> lease_cr;
+ boost::intrusive_ptr<RGWCoroutinesStack> lease_stack;
+ bool lost_lock;
+ bool failed;
+
+ string marker;
+
+ map<uint32_t, rgw_meta_sync_marker>& markers;
+
+ RGWSyncTraceNodeRef tn;
+
+public:
+ RGWFetchAllMetaCR(RGWMetaSyncEnv *_sync_env, int _num_shards,
+ map<uint32_t, rgw_meta_sync_marker>& _markers,
+ RGWSyncTraceNodeRef& _tn_parent) : RGWCoroutine(_sync_env->cct), sync_env(_sync_env),
+ num_shards(_num_shards),
+ ret_status(0), lease_cr(nullptr), lease_stack(nullptr),
+ lost_lock(false), failed(false), markers(_markers) {
+ tn = sync_env->sync_tracer->add_node(_tn_parent, "fetch_all_meta");
+ }
+
+ ~RGWFetchAllMetaCR() override {
+ }
+
+ void append_section_from_set(set<string>& all_sections, const string& name) {
+ set<string>::iterator iter = all_sections.find(name);
+ if (iter != all_sections.end()) {
+ sections.emplace_back(std::move(*iter));
+ all_sections.erase(iter);
+ }
+ }
+ /*
+ * meta sync should go in the following order: user, bucket.instance, bucket
+ * then whatever other sections exist (if any)
+ */
+ void rearrange_sections() {
+ set<string> all_sections;
+ std::move(sections.begin(), sections.end(),
+ std::inserter(all_sections, all_sections.end()));
+ sections.clear();
+
+ append_section_from_set(all_sections, "user");
+ append_section_from_set(all_sections, "bucket.instance");
+ append_section_from_set(all_sections, "bucket");
+
+ std::move(all_sections.begin(), all_sections.end(),
+ std::back_inserter(sections));
+ }
+
+ int operate(const DoutPrefixProvider *dpp) override {
+ RGWRESTConn *conn = sync_env->conn;
+
+ reenter(this) {
+ yield {
+ set_status(string("acquiring lock (") + sync_env->status_oid() + ")");
+ uint32_t lock_duration = cct->_conf->rgw_sync_lease_period;
+ string lock_name = "sync_lock";
+ lease_cr.reset(new RGWContinuousLeaseCR(sync_env->async_rados,
+ sync_env->store,
+ rgw_raw_obj(sync_env->store->svc()->zone->get_zone_params().log_pool, sync_env->status_oid()),
+ lock_name, lock_duration, this));
+ lease_stack.reset(spawn(lease_cr.get(), false));
+ }
+ while (!lease_cr->is_locked()) {
+ if (lease_cr->is_done()) {
+ ldpp_dout(dpp, 5) << "lease cr failed, done early " << dendl;
+ set_status("failed acquiring lock");
+ return set_cr_error(lease_cr->get_ret_status());
+ }
+ set_sleeping(true);
+ yield;
+ }
+ entries_index.reset(new RGWShardedOmapCRManager(sync_env->async_rados, sync_env->store, this, num_shards,
+ sync_env->store->svc()->zone->get_zone_params().log_pool,
+ mdlog_sync_full_sync_index_prefix));
+ yield {
+ call(new RGWReadRESTResourceCR<list<string> >(cct, conn, sync_env->http_manager,
+ "/admin/metadata", NULL, &sections));
+ }
+ if (get_ret_status() < 0) {
+ ldpp_dout(dpp, 0) << "ERROR: failed to fetch metadata sections" << dendl;
+ yield entries_index->finish();
+ yield lease_cr->go_down();
+ drain_all();
+ return set_cr_error(get_ret_status());
+ }
+ rearrange_sections();
+ sections_iter = sections.begin();
+ for (; sections_iter != sections.end(); ++sections_iter) {
+ do {
+ yield {
+#define META_FULL_SYNC_CHUNK_SIZE "1000"
+ string entrypoint = string("/admin/metadata/") + *sections_iter;
+ rgw_http_param_pair pairs[] = { { "max-entries", META_FULL_SYNC_CHUNK_SIZE },
+ { "marker", result.marker.c_str() },
+ { NULL, NULL } };
+ result.keys.clear();
+ call(new RGWReadRESTResourceCR<meta_list_result >(cct, conn, sync_env->http_manager,
+ entrypoint, pairs, &result));
+ }
+ ret_status = get_ret_status();
+ if (ret_status == -ENOENT) {
+ set_retcode(0); /* reset coroutine status so that we don't return it */
+ ret_status = 0;
+ }
+ if (ret_status < 0) {
+ tn->log(0, SSTR("ERROR: failed to fetch metadata section: " << *sections_iter));
+ yield entries_index->finish();
+ yield lease_cr->go_down();
+ drain_all();
+ return set_cr_error(ret_status);
+ }
+ iter = result.keys.begin();
+ for (; iter != result.keys.end(); ++iter) {
+ if (!lease_cr->is_locked()) {
+ lost_lock = true;
+ break;
+ }
+ yield; // allow entries_index consumer to make progress
+
+ tn->log(20, SSTR("list metadata: section=" << *sections_iter << " key=" << *iter));
+ string s = *sections_iter + ":" + *iter;
+ int shard_id;
+ rgw::sal::RGWRadosStore *store = sync_env->store;
+ int ret = store->ctl()->meta.mgr->get_shard_id(*sections_iter, *iter, &shard_id);
+ if (ret < 0) {
+ tn->log(0, SSTR("ERROR: could not determine shard id for " << *sections_iter << ":" << *iter));
+ ret_status = ret;
+ break;
+ }
+ if (!entries_index->append(s, shard_id)) {
+ break;
+ }
+ }
+ } while (result.truncated);
+ }
+ yield {
+ if (!entries_index->finish()) {
+ failed = true;
+ }
+ }
+ if (!failed) {
+ for (map<uint32_t, rgw_meta_sync_marker>::iterator iter = markers.begin(); iter != markers.end(); ++iter) {
+ int shard_id = (int)iter->first;
+ rgw_meta_sync_marker& marker = iter->second;
+ marker.total_entries = entries_index->get_total_entries(shard_id);
+ spawn(new RGWSimpleRadosWriteCR<rgw_meta_sync_marker>(dpp, sync_env->async_rados, sync_env->store->svc()->sysobj,
+ rgw_raw_obj(sync_env->store->svc()->zone->get_zone_params().log_pool, sync_env->shard_obj_name(shard_id)),
+ marker), true);
+ }
+ }
+
+ drain_all_but_stack(lease_stack.get()); /* the lease cr still needs to run */
+
+ yield lease_cr->go_down();
+
+ int ret;
+ while (collect(&ret, NULL)) {
+ if (ret < 0) {
+ return set_cr_error(ret);
+ }
+ yield;
+ }
+ drain_all();
+ if (failed) {
+ yield return set_cr_error(-EIO);
+ }
+ if (lost_lock) {
+ yield return set_cr_error(-EBUSY);
+ }
+
+ if (ret_status < 0) {
+ yield return set_cr_error(ret_status);
+ }
+
+ yield return set_cr_done();
+ }
+ return 0;
+ }
+};
+
+static string full_sync_index_shard_oid(int shard_id)
+{
+ char buf[mdlog_sync_full_sync_index_prefix.size() + 16];
+ snprintf(buf, sizeof(buf), "%s.%d", mdlog_sync_full_sync_index_prefix.c_str(), shard_id);
+ return string(buf);
+}
+
+class RGWReadRemoteMetadataCR : public RGWCoroutine {
+ RGWMetaSyncEnv *sync_env;
+
+ RGWRESTReadResource *http_op;
+
+ string section;
+ string key;
+
+ bufferlist *pbl;
+
+ RGWSyncTraceNodeRef tn;
+
+public:
+ RGWReadRemoteMetadataCR(RGWMetaSyncEnv *_sync_env,
+ const string& _section, const string& _key, bufferlist *_pbl,
+ const RGWSyncTraceNodeRef& _tn_parent) : RGWCoroutine(_sync_env->cct), sync_env(_sync_env),
+ http_op(NULL),
+ section(_section),
+ key(_key),
+ pbl(_pbl) {
+ tn = sync_env->sync_tracer->add_node(_tn_parent, "read_remote_meta",
+ section + ":" + key);
+ }
+
+ int operate(const DoutPrefixProvider *dpp) override {
+ RGWRESTConn *conn = sync_env->conn;
+ reenter(this) {
+ yield {
+ string key_encode;
+ url_encode(key, key_encode);
+ rgw_http_param_pair pairs[] = { { "key" , key.c_str()},
+ { NULL, NULL } };
+
+ string p = string("/admin/metadata/") + section + "/" + key_encode;
+
+ http_op = new RGWRESTReadResource(conn, p, pairs, NULL, sync_env->http_manager);
+
+ init_new_io(http_op);
+
+ int ret = http_op->aio_read(dpp);
+ if (ret < 0) {
+ ldpp_dout(dpp, 0) << "ERROR: failed to fetch mdlog data" << dendl;
+ log_error() << "failed to send http operation: " << http_op->to_str() << " ret=" << ret << std::endl;
+ http_op->put();
+ return set_cr_error(ret);
+ }
+
+ return io_block(0);
+ }
+ yield {
+ int ret = http_op->wait(pbl, null_yield);
+ http_op->put();
+ if (ret < 0) {
+ return set_cr_error(ret);
+ }
+ return set_cr_done();
+ }
+ }
+ return 0;
+ }
+};
+
+class RGWAsyncMetaStoreEntry : public RGWAsyncRadosRequest {
+ rgw::sal::RGWRadosStore *store;
+ string raw_key;
+ bufferlist bl;
+ const DoutPrefixProvider *dpp;
+protected:
+ int _send_request(const DoutPrefixProvider *dpp) override {
+ int ret = store->ctl()->meta.mgr->put(raw_key, bl, null_yield, dpp, RGWMDLogSyncType::APPLY_ALWAYS, true);
+ if (ret < 0) {
+ ldpp_dout(dpp, 0) << "ERROR: can't store key: " << raw_key << " ret=" << ret << dendl;
+ return ret;
+ }
+ return 0;
+ }
+public:
+ RGWAsyncMetaStoreEntry(RGWCoroutine *caller, RGWAioCompletionNotifier *cn, rgw::sal::RGWRadosStore *_store,
+ const string& _raw_key,
+ bufferlist& _bl,
+ const DoutPrefixProvider *dpp) : RGWAsyncRadosRequest(caller, cn), store(_store),
+ raw_key(_raw_key), bl(_bl), dpp(dpp) {}
+};
+
+
+class RGWMetaStoreEntryCR : public RGWSimpleCoroutine {
+ RGWMetaSyncEnv *sync_env;
+ string raw_key;
+ bufferlist bl;
+
+ RGWAsyncMetaStoreEntry *req;
+
+public:
+ RGWMetaStoreEntryCR(RGWMetaSyncEnv *_sync_env,
+ const string& _raw_key,
+ bufferlist& _bl) : RGWSimpleCoroutine(_sync_env->cct), sync_env(_sync_env),
+ raw_key(_raw_key), bl(_bl), req(NULL) {
+ }
+
+ ~RGWMetaStoreEntryCR() override {
+ if (req) {
+ req->finish();
+ }
+ }
+
+ int send_request(const DoutPrefixProvider *dpp) override {
+ req = new RGWAsyncMetaStoreEntry(this, stack->create_completion_notifier(),
+ sync_env->store, raw_key, bl, dpp);
+ sync_env->async_rados->queue(req);
+ return 0;
+ }
+
+ int request_complete() override {
+ return req->get_ret_status();
+ }
+};
+
+class RGWAsyncMetaRemoveEntry : public RGWAsyncRadosRequest {
+ rgw::sal::RGWRadosStore *store;
+ string raw_key;
+ const DoutPrefixProvider *dpp;
+protected:
+ int _send_request(const DoutPrefixProvider *dpp) override {
+ int ret = store->ctl()->meta.mgr->remove(raw_key, null_yield, dpp);
+ if (ret < 0) {
+ ldpp_dout(dpp, 0) << "ERROR: can't remove key: " << raw_key << " ret=" << ret << dendl;
+ return ret;
+ }
+ return 0;
+ }
+public:
+ RGWAsyncMetaRemoveEntry(RGWCoroutine *caller, RGWAioCompletionNotifier *cn, rgw::sal::RGWRadosStore *_store,
+ const string& _raw_key, const DoutPrefixProvider *dpp) : RGWAsyncRadosRequest(caller, cn), store(_store),
+ raw_key(_raw_key), dpp(dpp) {}
+};
+
+
+class RGWMetaRemoveEntryCR : public RGWSimpleCoroutine {
+ RGWMetaSyncEnv *sync_env;
+ string raw_key;
+
+ RGWAsyncMetaRemoveEntry *req;
+
+public:
+ RGWMetaRemoveEntryCR(RGWMetaSyncEnv *_sync_env,
+ const string& _raw_key) : RGWSimpleCoroutine(_sync_env->cct), sync_env(_sync_env),
+ raw_key(_raw_key), req(NULL) {
+ }
+
+ ~RGWMetaRemoveEntryCR() override {
+ if (req) {
+ req->finish();
+ }
+ }
+
+ int send_request(const DoutPrefixProvider *dpp) override {
+ req = new RGWAsyncMetaRemoveEntry(this, stack->create_completion_notifier(),
+ sync_env->store, raw_key, dpp);
+ sync_env->async_rados->queue(req);
+ return 0;
+ }
+
+ int request_complete() override {
+ int r = req->get_ret_status();
+ if (r == -ENOENT) {
+ r = 0;
+ }
+ return r;
+ }
+};
+
+#define META_SYNC_UPDATE_MARKER_WINDOW 10
+
+
+int RGWLastCallerWinsCR::operate(const DoutPrefixProvider *dpp) {
+ RGWCoroutine *call_cr;
+ reenter(this) {
+ while (cr) {
+ call_cr = cr;
+ cr = nullptr;
+ yield call(call_cr);
+ /* cr might have been modified at this point */
+ }
+ return set_cr_done();
+ }
+ return 0;
+}
+
+class RGWMetaSyncShardMarkerTrack : public RGWSyncShardMarkerTrack<string, string> {
+ RGWMetaSyncEnv *sync_env;
+
+ string marker_oid;
+ rgw_meta_sync_marker sync_marker;
+
+ RGWSyncTraceNodeRef tn;
+
+public:
+ RGWMetaSyncShardMarkerTrack(RGWMetaSyncEnv *_sync_env,
+ const string& _marker_oid,
+ const rgw_meta_sync_marker& _marker,
+ RGWSyncTraceNodeRef& _tn) : RGWSyncShardMarkerTrack(META_SYNC_UPDATE_MARKER_WINDOW),
+ sync_env(_sync_env),
+ marker_oid(_marker_oid),
+ sync_marker(_marker),
+ tn(_tn){}
+
+ RGWCoroutine *store_marker(const string& new_marker, uint64_t index_pos, const real_time& timestamp) override {
+ sync_marker.marker = new_marker;
+ if (index_pos > 0) {
+ sync_marker.pos = index_pos;
+ }
+
+ if (!real_clock::is_zero(timestamp)) {
+ sync_marker.timestamp = timestamp;
+ }
+
+ ldpp_dout(sync_env->dpp, 20) << __func__ << "(): updating marker marker_oid=" << marker_oid << " marker=" << new_marker << " realm_epoch=" << sync_marker.realm_epoch << dendl;
+ tn->log(20, SSTR("new marker=" << new_marker));
+ rgw::sal::RGWRadosStore *store = sync_env->store;
+ return new RGWSimpleRadosWriteCR<rgw_meta_sync_marker>(sync_env->dpp, sync_env->async_rados,
+ store->svc()->sysobj,
+ rgw_raw_obj(store->svc()->zone->get_zone_params().log_pool, marker_oid),
+ sync_marker);
+ }
+
+ RGWOrderCallCR *allocate_order_control_cr() override {
+ return new RGWLastCallerWinsCR(sync_env->cct);
+ }
+};
+
+RGWMetaSyncSingleEntryCR::RGWMetaSyncSingleEntryCR(RGWMetaSyncEnv *_sync_env,
+ const string& _raw_key, const string& _entry_marker,
+ const RGWMDLogStatus& _op_status,
+ RGWMetaSyncShardMarkerTrack *_marker_tracker, const RGWSyncTraceNodeRef& _tn_parent) : RGWCoroutine(_sync_env->cct),
+ sync_env(_sync_env),
+ raw_key(_raw_key), entry_marker(_entry_marker),
+ op_status(_op_status),
+ pos(0), sync_status(0),
+ marker_tracker(_marker_tracker), tries(0) {
+ error_injection = (sync_env->cct->_conf->rgw_sync_meta_inject_err_probability > 0);
+ tn = sync_env->sync_tracer->add_node(_tn_parent, "entry", raw_key);
+}
+
+int RGWMetaSyncSingleEntryCR::operate(const DoutPrefixProvider *dpp) {
+ reenter(this) {
+#define NUM_TRANSIENT_ERROR_RETRIES 10
+
+ if (error_injection &&
+ rand() % 10000 < cct->_conf->rgw_sync_meta_inject_err_probability * 10000.0) {
+ return set_cr_error(-EIO);
+ }
+
+ if (op_status != MDLOG_STATUS_COMPLETE) {
+ tn->log(20, "skipping pending operation");
+ yield call(marker_tracker->finish(entry_marker));
+ if (retcode < 0) {
+ return set_cr_error(retcode);
+ }
+ return set_cr_done();
+ }
+ tn->set_flag(RGW_SNS_FLAG_ACTIVE);
+ for (tries = 0; tries < NUM_TRANSIENT_ERROR_RETRIES; tries++) {
+ yield {
+ pos = raw_key.find(':');
+ section = raw_key.substr(0, pos);
+ key = raw_key.substr(pos + 1);
+ tn->log(10, SSTR("fetching remote metadata entry" << (tries == 0 ? "" : " (retry)")));
+ call(new RGWReadRemoteMetadataCR(sync_env, section, key, &md_bl, tn));
+ }
+
+ sync_status = retcode;
+
+ if (sync_status == -ENOENT) {
+ /* FIXME: do we need to remove the entry from the local zone? */
+ break;
+ }
+
+ if (tries < NUM_TRANSIENT_ERROR_RETRIES - 1) {
+ ldpp_dout(dpp, 20) << *this << ": failed to fetch remote metadata: " << section << ":" << key << ", will retry" << dendl;
+ continue;
+ }
+
+ if (sync_status < 0) {
+ tn->log(10, SSTR("failed to send read remote metadata entry: section=" << section << " key=" << key << " status=" << sync_status));
+ log_error() << "failed to send read remote metadata entry: section=" << section << " key=" << key << " status=" << sync_status << std::endl;
+ yield call(sync_env->error_logger->log_error_cr(dpp, sync_env->conn->get_remote_id(), section, key, -sync_status,
+ string("failed to read remote metadata entry: ") + cpp_strerror(-sync_status)));
+ return set_cr_error(sync_status);
+ }
+
+ break;
+ }
+
+ retcode = 0;
+ for (tries = 0; tries < NUM_TRANSIENT_ERROR_RETRIES; tries++) {
+ if (sync_status != -ENOENT) {
+ tn->log(10, SSTR("storing local metadata entry"));
+ yield call(new RGWMetaStoreEntryCR(sync_env, raw_key, md_bl));
+ } else {
+ tn->log(10, SSTR("removing local metadata entry"));
+ yield call(new RGWMetaRemoveEntryCR(sync_env, raw_key));
+ }
+ if (tries < NUM_TRANSIENT_ERROR_RETRIES - 1) {
+ ldpp_dout(dpp, 20) << *this << ": failed to store metadata: " << section << ":" << key << ", got retcode=" << retcode << dendl;
+ continue;
+ }
+ break;
+ }
+
+ sync_status = retcode;
+
+ if (sync_status == 0 && marker_tracker) {
+ /* update marker */
+ yield call(marker_tracker->finish(entry_marker));
+ sync_status = retcode;
+ }
+ if (sync_status < 0) {
+ tn->log(10, SSTR("failed, status=" << sync_status));
+ return set_cr_error(sync_status);
+ }
+ tn->log(10, "success");
+ return set_cr_done();
+ }
+ return 0;
+}
+
+class RGWCloneMetaLogCoroutine : public RGWCoroutine {
+ RGWMetaSyncEnv *sync_env;
+ RGWMetadataLog *mdlog;
+
+ const std::string& period;
+ int shard_id;
+ string marker;
+ bool truncated = false;
+ string *new_marker;
+
+ int max_entries = CLONE_MAX_ENTRIES;
+
+ RGWRESTReadResource *http_op = nullptr;
+ boost::intrusive_ptr<RGWMetadataLogInfoCompletion> completion;
+
+ RGWMetadataLogInfo shard_info;
+ rgw_mdlog_shard_data data;
+
+public:
+ RGWCloneMetaLogCoroutine(RGWMetaSyncEnv *_sync_env, RGWMetadataLog* mdlog,
+ const std::string& period, int _id,
+ const string& _marker, string *_new_marker)
+ : RGWCoroutine(_sync_env->cct), sync_env(_sync_env), mdlog(mdlog),
+ period(period), shard_id(_id), marker(_marker), new_marker(_new_marker) {
+ if (new_marker) {
+ *new_marker = marker;
+ }
+ }
+ ~RGWCloneMetaLogCoroutine() override {
+ if (http_op) {
+ http_op->put();
+ }
+ if (completion) {
+ completion->cancel();
+ }
+ }
+
+ int operate(const DoutPrefixProvider *dpp) override;
+
+ int state_init();
+ int state_read_shard_status();
+ int state_read_shard_status_complete();
+ int state_send_rest_request(const DoutPrefixProvider *dpp);
+ int state_receive_rest_response();
+ int state_store_mdlog_entries();
+ int state_store_mdlog_entries_complete();
+};
+
+#define META_SYNC_SPAWN_WINDOW 20
+
+class RGWMetaSyncShardCR : public RGWCoroutine {
+ RGWMetaSyncEnv *sync_env;
+
+ const rgw_pool& pool;
+ const std::string& period; //< currently syncing period id
+ const epoch_t realm_epoch; //< realm_epoch of period
+ RGWMetadataLog* mdlog; //< log of syncing period
+ uint32_t shard_id;
+ rgw_meta_sync_marker& sync_marker;
+ boost::optional<rgw_meta_sync_marker> temp_marker; //< for pending updates
+ string marker;
+ string max_marker;
+ const std::string& period_marker; //< max marker stored in next period
+
+ RGWRadosGetOmapKeysCR::ResultPtr omapkeys;
+ std::set<std::string> entries;
+ std::set<std::string>::iterator iter;
+
+ string oid;
+
+ RGWMetaSyncShardMarkerTrack *marker_tracker = nullptr;
+
+ list<cls_log_entry> log_entries;
+ list<cls_log_entry>::iterator log_iter;
+ bool truncated = false;
+
+ string mdlog_marker;
+ string raw_key;
+ rgw_mdlog_entry mdlog_entry;
+
+ ceph::mutex inc_lock = ceph::make_mutex("RGWMetaSyncShardCR::inc_lock");
+ ceph::condition_variable inc_cond;
+
+ boost::asio::coroutine incremental_cr;
+ boost::asio::coroutine full_cr;
+
+ boost::intrusive_ptr<RGWContinuousLeaseCR> lease_cr;
+ boost::intrusive_ptr<RGWCoroutinesStack> lease_stack;
+
+ bool lost_lock = false;
+
+ bool *reset_backoff;
+
+ // hold a reference to the cr stack while it's in the map
+ using StackRef = boost::intrusive_ptr<RGWCoroutinesStack>;
+ map<StackRef, string> stack_to_pos;
+ map<string, string> pos_to_prev;
+
+ bool can_adjust_marker = false;
+ bool done_with_period = false;
+
+ int total_entries = 0;
+
+ RGWSyncTraceNodeRef tn;
+public:
+ RGWMetaSyncShardCR(RGWMetaSyncEnv *_sync_env, const rgw_pool& _pool,
+ const std::string& period, epoch_t realm_epoch,
+ RGWMetadataLog* mdlog, uint32_t _shard_id,
+ rgw_meta_sync_marker& _marker,
+ const std::string& period_marker, bool *_reset_backoff,
+ RGWSyncTraceNodeRef& _tn)
+ : RGWCoroutine(_sync_env->cct), sync_env(_sync_env), pool(_pool),
+ period(period), realm_epoch(realm_epoch), mdlog(mdlog),
+ shard_id(_shard_id), sync_marker(_marker),
+ period_marker(period_marker),
+ reset_backoff(_reset_backoff), tn(_tn) {
+ *reset_backoff = false;
+ }
+
+ ~RGWMetaSyncShardCR() override {
+ delete marker_tracker;
+ if (lease_cr) {
+ lease_cr->abort();
+ }
+ }
+
+ void set_marker_tracker(RGWMetaSyncShardMarkerTrack *mt) {
+ delete marker_tracker;
+ marker_tracker = mt;
+ }
+
+ int operate(const DoutPrefixProvider *dpp) override {
+ int r;
+ while (true) {
+ switch (sync_marker.state) {
+ case rgw_meta_sync_marker::FullSync:
+ r = full_sync();
+ if (r < 0) {
+ ldpp_dout(dpp, 10) << "sync: full_sync: shard_id=" << shard_id << " r=" << r << dendl;
+ return set_cr_error(r);
+ }
+ return 0;
+ case rgw_meta_sync_marker::IncrementalSync:
+ r = incremental_sync();
+ if (r < 0) {
+ ldpp_dout(dpp, 10) << "sync: incremental_sync: shard_id=" << shard_id << " r=" << r << dendl;
+ return set_cr_error(r);
+ }
+ return 0;
+ }
+ }
+ /* unreachable */
+ return 0;
+ }
+
+ void collect_children()
+ {
+ int child_ret;
+ RGWCoroutinesStack *child;
+ while (collect_next(&child_ret, &child)) {
+ auto iter = stack_to_pos.find(child);
+ if (iter == stack_to_pos.end()) {
+ /* some other stack that we don't care about */
+ continue;
+ }
+
+ string& pos = iter->second;
+
+ if (child_ret < 0) {
+ ldpp_dout(sync_env->dpp, 0) << *this << ": child operation stack=" << child << " entry=" << pos << " returned " << child_ret << dendl;
+ // on any error code from RGWMetaSyncSingleEntryCR, we do not advance
+ // the sync status marker past this entry, and set
+ // can_adjust_marker=false to exit out of RGWMetaSyncShardCR.
+ // RGWMetaSyncShardControlCR will rerun RGWMetaSyncShardCR from the
+ // previous marker and retry
+ can_adjust_marker = false;
+ }
+
+ map<string, string>::iterator prev_iter = pos_to_prev.find(pos);
+ ceph_assert(prev_iter != pos_to_prev.end());
+
+ if (pos_to_prev.size() == 1) {
+ if (can_adjust_marker) {
+ sync_marker.marker = pos;
+ }
+ pos_to_prev.erase(prev_iter);
+ } else {
+ ceph_assert(pos_to_prev.size() > 1);
+ pos_to_prev.erase(prev_iter);
+ prev_iter = pos_to_prev.begin();
+ if (can_adjust_marker) {
+ sync_marker.marker = prev_iter->second;
+ }
+ }
+
+ ldpp_dout(sync_env->dpp, 4) << *this << ": adjusting marker pos=" << sync_marker.marker << dendl;
+ stack_to_pos.erase(iter);
+ }
+ }
+
+ int full_sync() {
+#define OMAP_GET_MAX_ENTRIES 100
+ int max_entries = OMAP_GET_MAX_ENTRIES;
+ reenter(&full_cr) {
+ set_status("full_sync");
+ tn->log(10, "start full sync");
+ oid = full_sync_index_shard_oid(shard_id);
+ can_adjust_marker = true;
+ /* grab lock */
+ yield {
+ uint32_t lock_duration = cct->_conf->rgw_sync_lease_period;
+ string lock_name = "sync_lock";
+ rgw::sal::RGWRadosStore *store = sync_env->store;
+ lease_cr.reset(new RGWContinuousLeaseCR(sync_env->async_rados, store,
+ rgw_raw_obj(pool, sync_env->shard_obj_name(shard_id)),
+ lock_name, lock_duration, this));
+ lease_stack.reset(spawn(lease_cr.get(), false));
+ lost_lock = false;
+ }
+ while (!lease_cr->is_locked()) {
+ if (lease_cr->is_done()) {
+ drain_all();
+ tn->log(5, "failed to take lease");
+ return lease_cr->get_ret_status();
+ }
+ set_sleeping(true);
+ yield;
+ }
+ tn->log(10, "took lease");
+
+ /* lock succeeded, a retry now should avoid previous backoff status */
+ *reset_backoff = true;
+
+ /* prepare marker tracker */
+ set_marker_tracker(new RGWMetaSyncShardMarkerTrack(sync_env,
+ sync_env->shard_obj_name(shard_id),
+ sync_marker, tn));
+
+ marker = sync_marker.marker;
+
+ total_entries = sync_marker.pos;
+
+ /* sync! */
+ do {
+ if (!lease_cr->is_locked()) {
+ tn->log(10, "lost lease");
+ lost_lock = true;
+ break;
+ }
+ omapkeys = std::make_shared<RGWRadosGetOmapKeysCR::Result>();
+ yield call(new RGWRadosGetOmapKeysCR(sync_env->store, rgw_raw_obj(pool, oid),
+ marker, max_entries, omapkeys));
+ if (retcode < 0) {
+ ldpp_dout(sync_env->dpp, 0) << "ERROR: " << __func__ << "(): RGWRadosGetOmapKeysCR() returned ret=" << retcode << dendl;
+ tn->log(0, SSTR("ERROR: failed to list omap keys, status=" << retcode));
+ yield lease_cr->go_down();
+ drain_all();
+ return retcode;
+ }
+ entries = std::move(omapkeys->entries);
+ tn->log(20, SSTR("retrieved " << entries.size() << " entries to sync"));
+ if (entries.size() > 0) {
+ tn->set_flag(RGW_SNS_FLAG_ACTIVE); /* actually have entries to sync */
+ }
+ iter = entries.begin();
+ for (; iter != entries.end(); ++iter) {
+ marker = *iter;
+ tn->log(20, SSTR("full sync: " << marker));
+ total_entries++;
+ if (!marker_tracker->start(marker, total_entries, real_time())) {
+ tn->log(0, SSTR("ERROR: cannot start syncing " << marker << ". Duplicate entry?"));
+ } else {
+ // fetch remote and write locally
+ yield {
+ RGWCoroutinesStack *stack = spawn(new RGWMetaSyncSingleEntryCR(sync_env, marker, marker, MDLOG_STATUS_COMPLETE, marker_tracker, tn), false);
+ // stack_to_pos holds a reference to the stack
+ stack_to_pos[stack] = marker;
+ pos_to_prev[marker] = marker;
+ }
+ // limit spawn window
+ while (num_spawned() > META_SYNC_SPAWN_WINDOW) {
+ yield wait_for_child();
+ collect_children();
+ }
+ }
+ }
+ collect_children();
+ } while (omapkeys->more && can_adjust_marker);
+
+ tn->unset_flag(RGW_SNS_FLAG_ACTIVE); /* actually have entries to sync */
+
+ while (num_spawned() > 1) {
+ yield wait_for_child();
+ collect_children();
+ }
+
+ if (!lost_lock) {
+ /* update marker to reflect we're done with full sync */
+ if (can_adjust_marker) {
+ // apply updates to a temporary marker, or operate() will send us
+ // to incremental_sync() after we yield
+ temp_marker = sync_marker;
+ temp_marker->state = rgw_meta_sync_marker::IncrementalSync;
+ temp_marker->marker = std::move(temp_marker->next_step_marker);
+ temp_marker->next_step_marker.clear();
+ temp_marker->realm_epoch = realm_epoch;
+ ldpp_dout(sync_env->dpp, 4) << *this << ": saving marker pos=" << temp_marker->marker << " realm_epoch=" << realm_epoch << dendl;
+
+ using WriteMarkerCR = RGWSimpleRadosWriteCR<rgw_meta_sync_marker>;
+ yield call(new WriteMarkerCR(sync_env->dpp, sync_env->async_rados, sync_env->store->svc()->sysobj,
+ rgw_raw_obj(pool, sync_env->shard_obj_name(shard_id)),
+ *temp_marker));
+ }
+
+ if (retcode < 0) {
+ ldpp_dout(sync_env->dpp, 0) << "ERROR: failed to set sync marker: retcode=" << retcode << dendl;
+ yield lease_cr->go_down();
+ drain_all();
+ return retcode;
+ }
+ }
+
+ /*
+ * if we reached here, it means that lost_lock is true, otherwise the state
+ * change in the previous block will prevent us from reaching here
+ */
+
+ yield lease_cr->go_down();
+
+ lease_cr.reset();
+
+ drain_all();
+
+ if (!can_adjust_marker) {
+ return -EAGAIN;
+ }
+
+ if (lost_lock) {
+ return -EBUSY;
+ }
+
+ tn->log(10, "full sync complete");
+
+ // apply the sync marker update
+ ceph_assert(temp_marker);
+ sync_marker = std::move(*temp_marker);
+ temp_marker = boost::none;
+ // must not yield after this point!
+ }
+ return 0;
+ }
+
+
+ int incremental_sync() {
+ reenter(&incremental_cr) {
+ set_status("incremental_sync");
+ tn->log(10, "start incremental sync");
+ can_adjust_marker = true;
+ /* grab lock */
+ if (!lease_cr) { /* could have had a lease_cr lock from previous state */
+ yield {
+ uint32_t lock_duration = cct->_conf->rgw_sync_lease_period;
+ string lock_name = "sync_lock";
+ rgw::sal::RGWRadosStore *store = sync_env->store;
+ lease_cr.reset( new RGWContinuousLeaseCR(sync_env->async_rados, store,
+ rgw_raw_obj(pool, sync_env->shard_obj_name(shard_id)),
+ lock_name, lock_duration, this));
+ lease_stack.reset(spawn(lease_cr.get(), false));
+ lost_lock = false;
+ }
+ while (!lease_cr->is_locked()) {
+ if (lease_cr->is_done()) {
+ drain_all();
+ tn->log(10, "failed to take lease");
+ return lease_cr->get_ret_status();
+ }
+ set_sleeping(true);
+ yield;
+ }
+ }
+ tn->log(10, "took lease");
+ // if the period has advanced, we can't use the existing marker
+ if (sync_marker.realm_epoch < realm_epoch) {
+ ldpp_dout(sync_env->dpp, 4) << "clearing marker=" << sync_marker.marker
+ << " from old realm_epoch=" << sync_marker.realm_epoch
+ << " (now " << realm_epoch << ')' << dendl;
+ sync_marker.realm_epoch = realm_epoch;
+ sync_marker.marker.clear();
+ }
+ mdlog_marker = sync_marker.marker;
+ set_marker_tracker(new RGWMetaSyncShardMarkerTrack(sync_env,
+ sync_env->shard_obj_name(shard_id),
+ sync_marker, tn));
+
+ /*
+ * mdlog_marker: the remote sync marker positiion
+ * sync_marker: the local sync marker position
+ * max_marker: the max mdlog position that we fetched
+ * marker: the current position we try to sync
+ * period_marker: the last marker before the next period begins (optional)
+ */
+ marker = max_marker = sync_marker.marker;
+ /* inc sync */
+ do {
+ if (!lease_cr->is_locked()) {
+ lost_lock = true;
+ tn->log(10, "lost lease");
+ break;
+ }
+#define INCREMENTAL_MAX_ENTRIES 100
+ ldpp_dout(sync_env->dpp, 20) << __func__ << ":" << __LINE__ << ": shard_id=" << shard_id << " mdlog_marker=" << mdlog_marker << " sync_marker.marker=" << sync_marker.marker << " period_marker=" << period_marker << dendl;
+ if (!period_marker.empty() && period_marker <= mdlog_marker) {
+ tn->log(10, SSTR("finished syncing current period: mdlog_marker=" << mdlog_marker << " sync_marker=" << sync_marker.marker << " period_marker=" << period_marker));
+ done_with_period = true;
+ break;
+ }
+ if (mdlog_marker <= max_marker) {
+ /* we're at the tip, try to bring more entries */
+ ldpp_dout(sync_env->dpp, 20) << __func__ << ":" << __LINE__ << ": shard_id=" << shard_id << " syncing mdlog for shard_id=" << shard_id << dendl;
+ yield call(new RGWCloneMetaLogCoroutine(sync_env, mdlog,
+ period, shard_id,
+ mdlog_marker, &mdlog_marker));
+ }
+ if (retcode < 0) {
+ tn->log(10, SSTR(*this << ": failed to fetch more log entries, retcode=" << retcode));
+ yield lease_cr->go_down();
+ drain_all();
+ *reset_backoff = false; // back off and try again later
+ return retcode;
+ }
+ *reset_backoff = true; /* if we got to this point, all systems function */
+ if (mdlog_marker > max_marker) {
+ tn->set_flag(RGW_SNS_FLAG_ACTIVE); /* actually have entries to sync */
+ tn->log(20, SSTR("mdlog_marker=" << mdlog_marker << " sync_marker=" << sync_marker.marker));
+ marker = max_marker;
+ yield call(new RGWReadMDLogEntriesCR(sync_env, mdlog, shard_id,
+ &max_marker, INCREMENTAL_MAX_ENTRIES,
+ &log_entries, &truncated));
+ if (retcode < 0) {
+ tn->log(10, SSTR("failed to list mdlog entries, retcode=" << retcode));
+ yield lease_cr->go_down();
+ drain_all();
+ *reset_backoff = false; // back off and try again later
+ return retcode;
+ }
+ for (log_iter = log_entries.begin(); log_iter != log_entries.end() && !done_with_period; ++log_iter) {
+ if (!period_marker.empty() && period_marker <= log_iter->id) {
+ done_with_period = true;
+ if (period_marker < log_iter->id) {
+ tn->log(10, SSTR("found key=" << log_iter->id
+ << " past period_marker=" << period_marker));
+ break;
+ }
+ ldpp_dout(sync_env->dpp, 10) << "found key at period_marker=" << period_marker << dendl;
+ // sync this entry, then return control to RGWMetaSyncCR
+ }
+ if (!mdlog_entry.convert_from(*log_iter)) {
+ tn->log(0, SSTR("ERROR: failed to convert mdlog entry, shard_id=" << shard_id << " log_entry: " << log_iter->id << ":" << log_iter->section << ":" << log_iter->name << ":" << log_iter->timestamp << " ... skipping entry"));
+ continue;
+ }
+ tn->log(20, SSTR("log_entry: " << log_iter->id << ":" << log_iter->section << ":" << log_iter->name << ":" << log_iter->timestamp));
+ if (!marker_tracker->start(log_iter->id, 0, log_iter->timestamp.to_real_time())) {
+ ldpp_dout(sync_env->dpp, 0) << "ERROR: cannot start syncing " << log_iter->id << ". Duplicate entry?" << dendl;
+ } else {
+ raw_key = log_iter->section + ":" + log_iter->name;
+ yield {
+ RGWCoroutinesStack *stack = spawn(new RGWMetaSyncSingleEntryCR(sync_env, raw_key, log_iter->id, mdlog_entry.log_data.status, marker_tracker, tn), false);
+ ceph_assert(stack);
+ // stack_to_pos holds a reference to the stack
+ stack_to_pos[stack] = log_iter->id;
+ pos_to_prev[log_iter->id] = marker;
+ }
+ // limit spawn window
+ while (num_spawned() > META_SYNC_SPAWN_WINDOW) {
+ yield wait_for_child();
+ collect_children();
+ }
+ }
+ marker = log_iter->id;
+ }
+ }
+ collect_children();
+ ldpp_dout(sync_env->dpp, 20) << __func__ << ":" << __LINE__ << ": shard_id=" << shard_id << " mdlog_marker=" << mdlog_marker << " max_marker=" << max_marker << " sync_marker.marker=" << sync_marker.marker << " period_marker=" << period_marker << dendl;
+ if (done_with_period) {
+ // return control to RGWMetaSyncCR and advance to the next period
+ tn->log(10, SSTR(*this << ": done with period"));
+ break;
+ }
+ if (mdlog_marker == max_marker && can_adjust_marker) {
+ tn->unset_flag(RGW_SNS_FLAG_ACTIVE);
+#define INCREMENTAL_INTERVAL 20
+ yield wait(utime_t(INCREMENTAL_INTERVAL, 0));
+ }
+ } while (can_adjust_marker);
+
+ tn->unset_flag(RGW_SNS_FLAG_ACTIVE);
+
+ while (num_spawned() > 1) {
+ yield wait_for_child();
+ collect_children();
+ }
+
+ yield lease_cr->go_down();
+
+ drain_all();
+
+ if (lost_lock) {
+ return -EBUSY;
+ }
+
+ if (!can_adjust_marker) {
+ return -EAGAIN;
+ }
+
+ return set_cr_done();
+ }
+ /* TODO */
+ return 0;
+ }
+};
+
+class RGWMetaSyncShardControlCR : public RGWBackoffControlCR
+{
+ RGWMetaSyncEnv *sync_env;
+
+ const rgw_pool& pool;
+ const std::string& period;
+ epoch_t realm_epoch;
+ RGWMetadataLog* mdlog;
+ uint32_t shard_id;
+ rgw_meta_sync_marker sync_marker;
+ const std::string period_marker;
+
+ RGWSyncTraceNodeRef tn;
+
+ static constexpr bool exit_on_error = false; // retry on all errors
+public:
+ RGWMetaSyncShardControlCR(RGWMetaSyncEnv *_sync_env, const rgw_pool& _pool,
+ const std::string& period, epoch_t realm_epoch,
+ RGWMetadataLog* mdlog, uint32_t _shard_id,
+ const rgw_meta_sync_marker& _marker,
+ std::string&& period_marker,
+ RGWSyncTraceNodeRef& _tn_parent)
+ : RGWBackoffControlCR(_sync_env->cct, exit_on_error), sync_env(_sync_env),
+ pool(_pool), period(period), realm_epoch(realm_epoch), mdlog(mdlog),
+ shard_id(_shard_id), sync_marker(_marker),
+ period_marker(std::move(period_marker)) {
+ tn = sync_env->sync_tracer->add_node(_tn_parent, "shard",
+ std::to_string(shard_id));
+ }
+
+ RGWCoroutine *alloc_cr() override {
+ return new RGWMetaSyncShardCR(sync_env, pool, period, realm_epoch, mdlog,
+ shard_id, sync_marker, period_marker, backoff_ptr(), tn);
+ }
+
+ RGWCoroutine *alloc_finisher_cr() override {
+ rgw::sal::RGWRadosStore *store = sync_env->store;
+ return new RGWSimpleRadosReadCR<rgw_meta_sync_marker>(sync_env->dpp, sync_env->async_rados, store->svc()->sysobj,
+ rgw_raw_obj(pool, sync_env->shard_obj_name(shard_id)),
+ &sync_marker);
+ }
+};
+
+class RGWMetaSyncCR : public RGWCoroutine {
+ RGWMetaSyncEnv *sync_env;
+ const rgw_pool& pool;
+ RGWPeriodHistory::Cursor cursor; //< sync position in period history
+ RGWPeriodHistory::Cursor next; //< next period in history
+ rgw_meta_sync_status sync_status;
+ RGWSyncTraceNodeRef tn;
+
+ std::mutex mutex; //< protect access to shard_crs
+
+ // TODO: it should be enough to hold a reference on the stack only, as calling
+ // RGWCoroutinesStack::wakeup() doesn't refer to the RGWCoroutine if it has
+ // already completed
+ using ControlCRRef = boost::intrusive_ptr<RGWMetaSyncShardControlCR>;
+ using StackRef = boost::intrusive_ptr<RGWCoroutinesStack>;
+ using RefPair = std::pair<ControlCRRef, StackRef>;
+ map<int, RefPair> shard_crs;
+ int ret{0};
+
+public:
+ RGWMetaSyncCR(RGWMetaSyncEnv *_sync_env, const RGWPeriodHistory::Cursor &cursor,
+ const rgw_meta_sync_status& _sync_status, RGWSyncTraceNodeRef& _tn)
+ : RGWCoroutine(_sync_env->cct), sync_env(_sync_env),
+ pool(sync_env->store->svc()->zone->get_zone_params().log_pool),
+ cursor(cursor), sync_status(_sync_status), tn(_tn) {}
+
+ ~RGWMetaSyncCR() {
+ }
+
+ int operate(const DoutPrefixProvider *dpp) override {
+ reenter(this) {
+ // loop through one period at a time
+ tn->log(1, "start");
+ for (;;) {
+ if (cursor == sync_env->store->svc()->mdlog->get_period_history()->get_current()) {
+ next = RGWPeriodHistory::Cursor{};
+ if (cursor) {
+ ldpp_dout(dpp, 10) << "RGWMetaSyncCR on current period="
+ << cursor.get_period().get_id() << dendl;
+ } else {
+ ldpp_dout(dpp, 10) << "RGWMetaSyncCR with no period" << dendl;
+ }
+ } else {
+ next = cursor;
+ next.next();
+ ldpp_dout(dpp, 10) << "RGWMetaSyncCR on period="
+ << cursor.get_period().get_id() << ", next="
+ << next.get_period().get_id() << dendl;
+ }
+
+ yield {
+ // get the mdlog for the current period (may be empty)
+ auto& period_id = sync_status.sync_info.period;
+ auto realm_epoch = sync_status.sync_info.realm_epoch;
+ auto mdlog = sync_env->store->svc()->mdlog->get_log(period_id);
+
+ tn->log(1, SSTR("realm epoch=" << realm_epoch << " period id=" << period_id));
+
+ // prevent wakeup() from accessing shard_crs while we're spawning them
+ std::lock_guard<std::mutex> lock(mutex);
+
+ // sync this period on each shard
+ for (const auto& m : sync_status.sync_markers) {
+ uint32_t shard_id = m.first;
+ auto& marker = m.second;
+
+ std::string period_marker;
+ if (next) {
+ // read the maximum marker from the next period's sync status
+ period_marker = next.get_period().get_sync_status()[shard_id];
+ if (period_marker.empty()) {
+ // no metadata changes have occurred on this shard, skip it
+ ldpp_dout(dpp, 10) << "RGWMetaSyncCR: skipping shard " << shard_id
+ << " with empty period marker" << dendl;
+ continue;
+ }
+ }
+
+ using ShardCR = RGWMetaSyncShardControlCR;
+ auto cr = new ShardCR(sync_env, pool, period_id, realm_epoch,
+ mdlog, shard_id, marker,
+ std::move(period_marker), tn);
+ auto stack = spawn(cr, false);
+ shard_crs[shard_id] = RefPair{cr, stack};
+ }
+ }
+ // wait for each shard to complete
+ while (ret == 0 && num_spawned() > 0) {
+ yield wait_for_child();
+ collect(&ret, nullptr);
+ }
+ drain_all();
+ {
+ // drop shard cr refs under lock
+ std::lock_guard<std::mutex> lock(mutex);
+ shard_crs.clear();
+ }
+ if (ret < 0) {
+ return set_cr_error(ret);
+ }
+ // advance to the next period
+ ceph_assert(next);
+ cursor = next;
+
+ // write the updated sync info
+ sync_status.sync_info.period = cursor.get_period().get_id();
+ sync_status.sync_info.realm_epoch = cursor.get_epoch();
+ yield call(new RGWSimpleRadosWriteCR<rgw_meta_sync_info>(dpp, sync_env->async_rados,
+ sync_env->store->svc()->sysobj,
+ rgw_raw_obj(pool, sync_env->status_oid()),
+ sync_status.sync_info));
+ }
+ }
+ return 0;
+ }
+
+ void wakeup(int shard_id) {
+ std::lock_guard<std::mutex> lock(mutex);
+ auto iter = shard_crs.find(shard_id);
+ if (iter == shard_crs.end()) {
+ return;
+ }
+ iter->second.first->wakeup();
+ }
+};
+
+void RGWRemoteMetaLog::init_sync_env(RGWMetaSyncEnv *env) {
+ env->dpp = dpp;
+ env->cct = store->ctx();
+ env->store = store;
+ env->conn = conn;
+ env->async_rados = async_rados;
+ env->http_manager = &http_manager;
+ env->error_logger = error_logger;
+ env->sync_tracer = store->getRados()->get_sync_tracer();
+}
+
+int RGWRemoteMetaLog::read_sync_status(const DoutPrefixProvider *dpp, rgw_meta_sync_status *sync_status)
+{
+ if (store->svc()->zone->is_meta_master()) {
+ return 0;
+ }
+ // cannot run concurrently with run_sync(), so run in a separate manager
+ RGWCoroutinesManager crs(store->ctx(), store->getRados()->get_cr_registry());
+ RGWHTTPManager http_manager(store->ctx(), crs.get_completion_mgr());
+ int ret = http_manager.start();
+ if (ret < 0) {
+ ldpp_dout(dpp, 0) << "failed in http_manager.start() ret=" << ret << dendl;
+ return ret;
+ }
+ RGWMetaSyncEnv sync_env_local = sync_env;
+ sync_env_local.http_manager = &http_manager;
+ tn->log(20, "read sync status");
+ ret = crs.run(dpp, new RGWReadSyncStatusCoroutine(&sync_env_local, sync_status));
+ http_manager.stop();
+ return ret;
+}
+
+int RGWRemoteMetaLog::init_sync_status(const DoutPrefixProvider *dpp)
+{
+ if (store->svc()->zone->is_meta_master()) {
+ return 0;
+ }
+
+ rgw_mdlog_info mdlog_info;
+ int r = read_log_info(dpp, &mdlog_info);
+ if (r < 0) {
+ ldpp_dout(dpp, -1) << "ERROR: fail to fetch master log info (r=" << r << ")" << dendl;
+ return r;
+ }
+
+ rgw_meta_sync_info sync_info;
+ sync_info.num_shards = mdlog_info.num_shards;
+ auto cursor = store->svc()->mdlog->get_period_history()->get_current();
+ if (cursor) {
+ sync_info.period = cursor.get_period().get_id();
+ sync_info.realm_epoch = cursor.get_epoch();
+ }
+
+ return run(dpp, new RGWInitSyncStatusCoroutine(&sync_env, sync_info));
+}
+
+int RGWRemoteMetaLog::store_sync_info(const DoutPrefixProvider *dpp, const rgw_meta_sync_info& sync_info)
+{
+ tn->log(20, "store sync info");
+ return run(dpp, new RGWSimpleRadosWriteCR<rgw_meta_sync_info>(dpp, async_rados, store->svc()->sysobj,
+ rgw_raw_obj(store->svc()->zone->get_zone_params().log_pool, sync_env.status_oid()),
+ sync_info));
+}
+
+// return a cursor to the period at our sync position
+static RGWPeriodHistory::Cursor get_period_at(const DoutPrefixProvider *dpp,
+ rgw::sal::RGWRadosStore* store,
+ const rgw_meta_sync_info& info,
+ optional_yield y)
+{
+ if (info.period.empty()) {
+ // return an empty cursor with error=0
+ return RGWPeriodHistory::Cursor{};
+ }
+
+ // look for an existing period in our history
+ auto cursor = store->svc()->mdlog->get_period_history()->lookup(info.realm_epoch);
+ if (cursor) {
+ // verify that the period ids match
+ auto& existing = cursor.get_period().get_id();
+ if (existing != info.period) {
+ ldpp_dout(dpp, -1) << "ERROR: sync status period=" << info.period
+ << " does not match period=" << existing
+ << " in history at realm epoch=" << info.realm_epoch << dendl;
+ return RGWPeriodHistory::Cursor{-EEXIST};
+ }
+ return cursor;
+ }
+
+ // read the period from rados or pull it from the master
+ RGWPeriod period;
+ int r = store->svc()->mdlog->pull_period(dpp, info.period, period, y);
+ if (r < 0) {
+ ldpp_dout(dpp, -1) << "ERROR: failed to read period id "
+ << info.period << ": " << cpp_strerror(r) << dendl;
+ return RGWPeriodHistory::Cursor{r};
+ }
+ // attach the period to our history
+ cursor = store->svc()->mdlog->get_period_history()->attach(dpp, std::move(period), y);
+ if (!cursor) {
+ r = cursor.get_error();
+ ldpp_dout(dpp, -1) << "ERROR: failed to read period history back to "
+ << info.period << ": " << cpp_strerror(r) << dendl;
+ }
+ return cursor;
+}
+
+int RGWRemoteMetaLog::run_sync(const DoutPrefixProvider *dpp, optional_yield y)
+{
+ if (store->svc()->zone->is_meta_master()) {
+ return 0;
+ }
+
+ int r = 0;
+
+ // get shard count and oldest log period from master
+ rgw_mdlog_info mdlog_info;
+ for (;;) {
+ if (going_down) {
+ ldpp_dout(dpp, 1) << __func__ << "(): going down" << dendl;
+ return 0;
+ }
+ r = read_log_info(dpp, &mdlog_info);
+ if (r == -EIO || r == -ENOENT) {
+ // keep retrying if master isn't alive or hasn't initialized the log
+ ldpp_dout(dpp, 10) << __func__ << "(): waiting for master.." << dendl;
+ backoff.backoff_sleep();
+ continue;
+ }
+ backoff.reset();
+ if (r < 0) {
+ ldpp_dout(dpp, -1) << "ERROR: fail to fetch master log info (r=" << r << ")" << dendl;
+ return r;
+ }
+ break;
+ }
+
+ rgw_meta_sync_status sync_status;
+ do {
+ if (going_down) {
+ ldpp_dout(dpp, 1) << __func__ << "(): going down" << dendl;
+ return 0;
+ }
+ r = run(dpp, new RGWReadSyncStatusCoroutine(&sync_env, &sync_status));
+ if (r < 0 && r != -ENOENT) {
+ ldpp_dout(dpp, 0) << "ERROR: failed to fetch sync status r=" << r << dendl;
+ return r;
+ }
+
+ if (!mdlog_info.period.empty()) {
+ // restart sync if the remote has a period, but:
+ // a) our status does not, or
+ // b) our sync period comes before the remote's oldest log period
+ if (sync_status.sync_info.period.empty() ||
+ sync_status.sync_info.realm_epoch < mdlog_info.realm_epoch) {
+ sync_status.sync_info.state = rgw_meta_sync_info::StateInit;
+ string reason;
+ if (sync_status.sync_info.period.empty()) {
+ reason = "period is empty";
+ } else {
+ reason = SSTR("sync_info realm epoch is behind: " << sync_status.sync_info.realm_epoch << " < " << mdlog_info.realm_epoch);
+ }
+ tn->log(1, "initialize sync (reason: " + reason + ")");
+ ldpp_dout(dpp, 1) << "epoch=" << sync_status.sync_info.realm_epoch
+ << " in sync status comes before remote's oldest mdlog epoch="
+ << mdlog_info.realm_epoch << ", restarting sync" << dendl;
+ }
+ }
+
+ if (sync_status.sync_info.state == rgw_meta_sync_info::StateInit) {
+ ldpp_dout(dpp, 20) << __func__ << "(): init" << dendl;
+ sync_status.sync_info.num_shards = mdlog_info.num_shards;
+ auto cursor = store->svc()->mdlog->get_period_history()->get_current();
+ if (cursor) {
+ // run full sync, then start incremental from the current period/epoch
+ sync_status.sync_info.period = cursor.get_period().get_id();
+ sync_status.sync_info.realm_epoch = cursor.get_epoch();
+ }
+ r = run(dpp, new RGWInitSyncStatusCoroutine(&sync_env, sync_status.sync_info));
+ if (r == -EBUSY) {
+ backoff.backoff_sleep();
+ continue;
+ }
+ backoff.reset();
+ if (r < 0) {
+ ldpp_dout(dpp, 0) << "ERROR: failed to init sync status r=" << r << dendl;
+ return r;
+ }
+ }
+ } while (sync_status.sync_info.state == rgw_meta_sync_info::StateInit);
+
+ auto num_shards = sync_status.sync_info.num_shards;
+ if (num_shards != mdlog_info.num_shards) {
+ ldpp_dout(dpp, -1) << "ERROR: can't sync, mismatch between num shards, master num_shards=" << mdlog_info.num_shards << " local num_shards=" << num_shards << dendl;
+ return -EINVAL;
+ }
+
+ RGWPeriodHistory::Cursor cursor;
+ do {
+ r = run(dpp, new RGWReadSyncStatusCoroutine(&sync_env, &sync_status));
+ if (r < 0 && r != -ENOENT) {
+ tn->log(0, SSTR("ERROR: failed to fetch sync status r=" << r));
+ return r;
+ }
+
+ switch ((rgw_meta_sync_info::SyncState)sync_status.sync_info.state) {
+ case rgw_meta_sync_info::StateBuildingFullSyncMaps:
+ tn->log(20, "building full sync maps");
+ r = run(dpp, new RGWFetchAllMetaCR(&sync_env, num_shards, sync_status.sync_markers, tn));
+ if (r == -EBUSY || r == -EIO) {
+ backoff.backoff_sleep();
+ continue;
+ }
+ backoff.reset();
+ if (r < 0) {
+ tn->log(0, SSTR("ERROR: failed to fetch all metadata keys (r=" << r << ")"));
+ return r;
+ }
+
+ sync_status.sync_info.state = rgw_meta_sync_info::StateSync;
+ r = store_sync_info(dpp, sync_status.sync_info);
+ if (r < 0) {
+ tn->log(0, SSTR("ERROR: failed to update sync status (r=" << r << ")"));
+ return r;
+ }
+ /* fall through */
+ case rgw_meta_sync_info::StateSync:
+ tn->log(20, "sync");
+ // find our position in the period history (if any)
+ cursor = get_period_at(dpp, store, sync_status.sync_info, y);
+ r = cursor.get_error();
+ if (r < 0) {
+ return r;
+ }
+ meta_sync_cr = new RGWMetaSyncCR(&sync_env, cursor, sync_status, tn);
+ r = run(dpp, meta_sync_cr);
+ if (r < 0) {
+ tn->log(0, "ERROR: failed to fetch all metadata keys");
+ return r;
+ }
+ break;
+ default:
+ tn->log(0, "ERROR: bad sync state!");
+ return -EIO;
+ }
+ } while (!going_down);
+
+ return 0;
+}
+
+void RGWRemoteMetaLog::wakeup(int shard_id)
+{
+ if (!meta_sync_cr) {
+ return;
+ }
+ meta_sync_cr->wakeup(shard_id);
+}
+
+int RGWCloneMetaLogCoroutine::operate(const DoutPrefixProvider *dpp)
+{
+ reenter(this) {
+ do {
+ yield {
+ ldpp_dout(dpp, 20) << __func__ << ": shard_id=" << shard_id << ": init request" << dendl;
+ return state_init();
+ }
+ yield {
+ ldpp_dout(dpp, 20) << __func__ << ": shard_id=" << shard_id << ": reading shard status" << dendl;
+ return state_read_shard_status();
+ }
+ yield {
+ ldpp_dout(dpp, 20) << __func__ << ": shard_id=" << shard_id << ": reading shard status complete" << dendl;
+ return state_read_shard_status_complete();
+ }
+ yield {
+ ldpp_dout(dpp, 20) << __func__ << ": shard_id=" << shard_id << ": sending rest request" << dendl;
+ return state_send_rest_request(dpp);
+ }
+ yield {
+ ldpp_dout(dpp, 20) << __func__ << ": shard_id=" << shard_id << ": receiving rest response" << dendl;
+ return state_receive_rest_response();
+ }
+ yield {
+ ldpp_dout(dpp, 20) << __func__ << ": shard_id=" << shard_id << ": storing mdlog entries" << dendl;
+ return state_store_mdlog_entries();
+ }
+ } while (truncated);
+ yield {
+ ldpp_dout(dpp, 20) << __func__ << ": shard_id=" << shard_id << ": storing mdlog entries complete" << dendl;
+ return state_store_mdlog_entries_complete();
+ }
+ }
+
+ return 0;
+}
+
+int RGWCloneMetaLogCoroutine::state_init()
+{
+ data = rgw_mdlog_shard_data();
+
+ return 0;
+}
+
+int RGWCloneMetaLogCoroutine::state_read_shard_status()
+{
+ const bool add_ref = false; // default constructs with refs=1
+
+ completion.reset(new RGWMetadataLogInfoCompletion(
+ [this](int ret, const cls_log_header& header) {
+ if (ret < 0) {
+ if (ret != -ENOENT) {
+ ldpp_dout(sync_env->dpp, 1) << "ERROR: failed to read mdlog info with "
+ << cpp_strerror(ret) << dendl;
+ }
+ } else {
+ shard_info.marker = header.max_marker;
+ shard_info.last_update = header.max_time.to_real_time();
+ }
+ // wake up parent stack
+ io_complete();
+ }), add_ref);
+
+ int ret = mdlog->get_info_async(sync_env->dpp, shard_id, completion.get());
+ if (ret < 0) {
+ ldpp_dout(sync_env->dpp, 0) << "ERROR: mdlog->get_info_async() returned ret=" << ret << dendl;
+ return set_cr_error(ret);
+ }
+
+ return io_block(0);
+}
+
+int RGWCloneMetaLogCoroutine::state_read_shard_status_complete()
+{
+ completion.reset();
+
+ ldpp_dout(sync_env->dpp, 20) << "shard_id=" << shard_id << " marker=" << shard_info.marker << " last_update=" << shard_info.last_update << dendl;
+
+ marker = shard_info.marker;
+
+ return 0;
+}
+
+int RGWCloneMetaLogCoroutine::state_send_rest_request(const DoutPrefixProvider *dpp)
+{
+ RGWRESTConn *conn = sync_env->conn;
+
+ char buf[32];
+ snprintf(buf, sizeof(buf), "%d", shard_id);
+
+ char max_entries_buf[32];
+ snprintf(max_entries_buf, sizeof(max_entries_buf), "%d", max_entries);
+
+ const char *marker_key = (marker.empty() ? "" : "marker");
+
+ rgw_http_param_pair pairs[] = { { "type", "metadata" },
+ { "id", buf },
+ { "period", period.c_str() },
+ { "max-entries", max_entries_buf },
+ { marker_key, marker.c_str() },
+ { NULL, NULL } };
+
+ http_op = new RGWRESTReadResource(conn, "/admin/log", pairs, NULL, sync_env->http_manager);
+
+ init_new_io(http_op);
+
+ int ret = http_op->aio_read(dpp);
+ if (ret < 0) {
+ ldpp_dout(dpp, 0) << "ERROR: failed to fetch mdlog data" << dendl;
+ log_error() << "failed to send http operation: " << http_op->to_str() << " ret=" << ret << std::endl;
+ http_op->put();
+ http_op = NULL;
+ return set_cr_error(ret);
+ }
+
+ return io_block(0);
+}
+
+int RGWCloneMetaLogCoroutine::state_receive_rest_response()
+{
+ int ret = http_op->wait(&data, null_yield);
+ if (ret < 0) {
+ error_stream << "http operation failed: " << http_op->to_str() << " status=" << http_op->get_http_status() << std::endl;
+ ldpp_dout(sync_env->dpp, 5) << "failed to wait for op, ret=" << ret << dendl;
+ http_op->put();
+ http_op = NULL;
+ return set_cr_error(ret);
+ }
+ http_op->put();
+ http_op = NULL;
+
+ ldpp_dout(sync_env->dpp, 20) << "remote mdlog, shard_id=" << shard_id << " num of shard entries: " << data.entries.size() << dendl;
+
+ truncated = ((int)data.entries.size() == max_entries);
+
+ if (data.entries.empty()) {
+ if (new_marker) {
+ *new_marker = marker;
+ }
+ return set_cr_done();
+ }
+
+ if (new_marker) {
+ *new_marker = data.entries.back().id;
+ }
+
+ return 0;
+}
+
+
+int RGWCloneMetaLogCoroutine::state_store_mdlog_entries()
+{
+ list<cls_log_entry> dest_entries;
+
+ vector<rgw_mdlog_entry>::iterator iter;
+ for (iter = data.entries.begin(); iter != data.entries.end(); ++iter) {
+ rgw_mdlog_entry& entry = *iter;
+ ldpp_dout(sync_env->dpp, 20) << "entry: name=" << entry.name << dendl;
+
+ cls_log_entry dest_entry;
+ dest_entry.id = entry.id;
+ dest_entry.section = entry.section;
+ dest_entry.name = entry.name;
+ dest_entry.timestamp = utime_t(entry.timestamp);
+
+ encode(entry.log_data, dest_entry.data);
+
+ dest_entries.push_back(dest_entry);
+
+ marker = entry.id;
+ }
+
+ RGWAioCompletionNotifier *cn = stack->create_completion_notifier();
+
+ int ret = mdlog->store_entries_in_shard(sync_env->dpp, dest_entries, shard_id, cn->completion());
+ if (ret < 0) {
+ cn->put();
+ ldpp_dout(sync_env->dpp, 10) << "failed to store md log entries shard_id=" << shard_id << " ret=" << ret << dendl;
+ return set_cr_error(ret);
+ }
+ return io_block(0);
+}
+
+int RGWCloneMetaLogCoroutine::state_store_mdlog_entries_complete()
+{
+ return set_cr_done();
+}
generated by cgit v1.2.3 (git 2.39.1) at 2024-11-04 21:41:08 +0000