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+// -*- mode:C++; tab-width:8; c-basic-offset:2; indent-tabs-mode:t -*-
+// vim: ts=8 sw=2 smarttab
+
+#include <algorithm>
+#include <cstdlib>
+#include <iostream>
+
+#include <boost/lexical_cast.hpp>
+#include <boost/icl/interval_map.hpp>
+#include <boost/algorithm/string/join.hpp>
+
+#include "common/SubProcess.h"
+#include "common/fork_function.h"
+
+#include "include/stringify.h"
+#include "CrushTester.h"
+#include "CrushTreeDumper.h"
+#include "include/ceph_features.h"
+
+
+using std::cerr;
+using std::cout;
+using std::map;
+using std::ostringstream;
+using std::string;
+using std::stringstream;
+using std::vector;
+
+void CrushTester::set_device_weight(int dev, float f)
+{
+ int w = (int)(f * 0x10000);
+ if (w < 0)
+ w = 0;
+ if (w > 0x10000)
+ w = 0x10000;
+ device_weight[dev] = w;
+}
+
+int CrushTester::get_maximum_affected_by_rule(int ruleno)
+{
+ // get the number of steps in RULENO
+ int rule_size = crush.get_rule_len(ruleno);
+ vector<int> affected_types;
+ map<int,int> replications_by_type;
+
+ for (int i = 0; i < rule_size; i++){
+ // get what operation is done by the current step
+ int rule_operation = crush.get_rule_op(ruleno, i);
+
+ // if the operation specifies choosing a device type, store it
+ if (rule_operation >= 2 && rule_operation != 4){
+ int desired_replication = crush.get_rule_arg1(ruleno,i);
+ int affected_type = crush.get_rule_arg2(ruleno,i);
+ affected_types.push_back(affected_type);
+ replications_by_type[affected_type] = desired_replication;
+ }
+ }
+
+ /*
+ * now for each of the affected bucket types, see what is the
+ * maximum we are (a) requesting or (b) have
+ */
+
+ map<int,int> max_devices_of_type;
+
+ // loop through the vector of affected types
+ for (vector<int>::iterator it = affected_types.begin(); it != affected_types.end(); ++it){
+ // loop through the number of buckets looking for affected types
+ for (map<int,string>::iterator p = crush.name_map.begin(); p != crush.name_map.end(); ++p){
+ int bucket_type = crush.get_bucket_type(p->first);
+ if ( bucket_type == *it)
+ max_devices_of_type[*it]++;
+ }
+ }
+
+ for(std::vector<int>::iterator it = affected_types.begin(); it != affected_types.end(); ++it){
+ if ( replications_by_type[*it] > 0 && replications_by_type[*it] < max_devices_of_type[*it] )
+ max_devices_of_type[*it] = replications_by_type[*it];
+ }
+
+ /*
+ * get the smallest number of buckets available of any type as this is our upper bound on
+ * the number of replicas we can place
+ */
+ int max_affected = std::max( crush.get_max_buckets(), crush.get_max_devices() );
+
+ for(std::vector<int>::iterator it = affected_types.begin(); it != affected_types.end(); ++it){
+ if (max_devices_of_type[*it] > 0 && max_devices_of_type[*it] < max_affected )
+ max_affected = max_devices_of_type[*it];
+ }
+
+ return max_affected;
+}
+
+
+map<int,int> CrushTester::get_collapsed_mapping()
+{
+ int num_to_check = crush.get_max_devices();
+ int next_id = 0;
+ map<int, int> collapse_mask;
+
+ for (int i = 0; i < num_to_check; i++){
+ if (crush.check_item_present(i)){
+ collapse_mask[i] = next_id;
+ next_id++;
+ }
+ }
+
+ return collapse_mask;
+}
+
+void CrushTester::adjust_weights(vector<__u32>& weight)
+{
+
+ if (mark_down_device_ratio > 0) {
+ // active buckets
+ vector<int> bucket_ids;
+ for (int i = 0; i < crush.get_max_buckets(); i++) {
+ int id = -1 - i;
+ if (crush.get_bucket_weight(id) > 0) {
+ bucket_ids.push_back(id);
+ }
+ }
+
+ // get buckets that are one level above a device
+ vector<int> buckets_above_devices;
+ for (unsigned i = 0; i < bucket_ids.size(); i++) {
+ // grab the first child object of a bucket and check if it's ID is less than 0
+ int id = bucket_ids[i];
+ if (crush.get_bucket_size(id) == 0)
+ continue;
+ int first_child = crush.get_bucket_item(id, 0); // returns the ID of the bucket or device
+ if (first_child >= 0) {
+ buckets_above_devices.push_back(id);
+ }
+ }
+
+ // permute bucket list
+ for (unsigned i = 0; i < buckets_above_devices.size(); i++) {
+ unsigned j = lrand48() % (buckets_above_devices.size() - 1);
+ std::swap(buckets_above_devices[i], buckets_above_devices[j]);
+ }
+
+ // calculate how many buckets and devices we need to reap...
+ int num_buckets_to_visit = (int) (mark_down_bucket_ratio * buckets_above_devices.size());
+
+ for (int i = 0; i < num_buckets_to_visit; i++) {
+ int id = buckets_above_devices[i];
+ int size = crush.get_bucket_size(id);
+ vector<int> items;
+ for (int o = 0; o < size; o++)
+ items.push_back(crush.get_bucket_item(id, o));
+
+ // permute items
+ for (int o = 0; o < size; o++) {
+ int j = lrand48() % (crush.get_bucket_size(id) - 1);
+ std::swap(items[o], items[j]);
+ }
+
+ int local_devices_to_visit = (int) (mark_down_device_ratio*size);
+ for (int o = 0; o < local_devices_to_visit; o++){
+ int item = crush.get_bucket_item(id, o);
+ weight[item] = 0;
+ }
+ }
+ }
+}
+
+bool CrushTester::check_valid_placement(int ruleno, vector<int> in, const vector<__u32>& weight)
+{
+
+ bool valid_placement = true;
+ vector<int> included_devices;
+ map<string,string> seen_devices;
+
+ // first do the easy check that all devices are "up"
+ for (vector<int>::iterator it = in.begin(); it != in.end(); ++it) {
+ if (weight[(*it)] == 0) {
+ valid_placement = false;
+ break;
+ } else if (weight[(*it)] > 0) {
+ included_devices.push_back( (*it) );
+ }
+ }
+
+ /*
+ * now do the harder test of checking that the CRUSH rule r is not violated
+ * we could test that none of the devices mentioned in out are unique,
+ * but this is a special case of this test
+ */
+
+ // get the number of steps in RULENO
+ int rule_size = crush.get_rule_len(ruleno);
+ vector<string> affected_types;
+
+ // get the smallest type id, and name
+ int min_map_type = crush.get_num_type_names();
+ for (map<int,string>::iterator it = crush.type_map.begin(); it != crush.type_map.end(); ++it ) {
+ if ( (*it).first < min_map_type ) {
+ min_map_type = (*it).first;
+ }
+ }
+
+ string min_map_type_name = crush.type_map[min_map_type];
+
+ // get the types of devices affected by RULENO
+ for (int i = 0; i < rule_size; i++) {
+ // get what operation is done by the current step
+ int rule_operation = crush.get_rule_op(ruleno, i);
+
+ // if the operation specifies choosing a device type, store it
+ if (rule_operation >= 2 && rule_operation != 4) {
+ int affected_type = crush.get_rule_arg2(ruleno,i);
+ affected_types.push_back( crush.get_type_name(affected_type));
+ }
+ }
+
+ // find in if we are only dealing with osd's
+ bool only_osd_affected = false;
+ if (affected_types.size() == 1) {
+ if ((affected_types.back() == min_map_type_name) && (min_map_type_name == "osd")) {
+ only_osd_affected = true;
+ }
+ }
+
+ // check that we don't have any duplicate id's
+ for (vector<int>::iterator it = included_devices.begin(); it != included_devices.end(); ++it) {
+ int num_copies = std::count(included_devices.begin(), included_devices.end(), (*it) );
+ if (num_copies > 1) {
+ valid_placement = false;
+ }
+ }
+
+ // if we have more than just osd's affected we need to do a lot more work
+ if (!only_osd_affected) {
+ // loop through the devices that are "in/up"
+ for (vector<int>::iterator it = included_devices.begin(); it != included_devices.end(); ++it) {
+ if (valid_placement == false)
+ break;
+
+ // create a temporary map of the form (device type, device name in map)
+ map<string,string> device_location_hierarchy = crush.get_full_location(*it);
+
+ // loop over the types affected by RULENO looking for duplicate bucket assignments
+ for (vector<string>::iterator t = affected_types.begin(); t != affected_types.end(); ++t) {
+ if (seen_devices.count( device_location_hierarchy[*t])) {
+ valid_placement = false;
+ break;
+ } else {
+ // store the devices we have seen in the form of (device name, device type)
+ seen_devices[ device_location_hierarchy[*t] ] = *t;
+ }
+ }
+ }
+ }
+
+ return valid_placement;
+}
+
+int CrushTester::random_placement(int ruleno, vector<int>& out, int maxout, vector<__u32>& weight)
+{
+ // get the total weight of the system
+ int total_weight = 0;
+ for (unsigned i = 0; i < weight.size(); i++)
+ total_weight += weight[i];
+
+ if (total_weight == 0 ||
+ crush.get_max_devices() == 0)
+ return -EINVAL;
+
+ // determine the real maximum number of devices to return
+ int devices_requested = std::min(maxout, get_maximum_affected_by_rule(ruleno));
+ bool accept_placement = false;
+
+ vector<int> trial_placement(devices_requested);
+ int attempted_tries = 0;
+ int max_tries = 100;
+ do {
+ // create a vector to hold our trial mappings
+ int temp_array[devices_requested];
+ for (int i = 0; i < devices_requested; i++){
+ temp_array[i] = lrand48() % (crush.get_max_devices());
+ }
+
+ trial_placement.assign(temp_array, temp_array + devices_requested);
+ accept_placement = check_valid_placement(ruleno, trial_placement, weight);
+ attempted_tries++;
+ } while (accept_placement == false && attempted_tries < max_tries);
+
+ // save our random placement to the out vector
+ if (accept_placement)
+ out.assign(trial_placement.begin(), trial_placement.end());
+
+ // or don't....
+ else if (attempted_tries == max_tries)
+ return -EINVAL;
+
+ return 0;
+}
+
+void CrushTester::write_integer_indexed_vector_data_string(vector<string> &dst, int index, vector<int> vector_data)
+{
+ stringstream data_buffer (stringstream::in | stringstream::out);
+ unsigned input_size = vector_data.size();
+
+ // pass the indexing variable to the data buffer
+ data_buffer << index;
+
+ // pass the rest of the input data to the buffer
+ for (unsigned i = 0; i < input_size; i++) {
+ data_buffer << ',' << vector_data[i];
+ }
+
+ data_buffer << std::endl;
+
+ // write the data buffer to the destination
+ dst.push_back( data_buffer.str() );
+}
+
+void CrushTester::write_integer_indexed_vector_data_string(vector<string> &dst, int index, vector<float> vector_data)
+{
+ stringstream data_buffer (stringstream::in | stringstream::out);
+ unsigned input_size = vector_data.size();
+
+ // pass the indexing variable to the data buffer
+ data_buffer << index;
+
+ // pass the rest of the input data to the buffer
+ for (unsigned i = 0; i < input_size; i++) {
+ data_buffer << ',' << vector_data[i];
+ }
+
+ data_buffer << std::endl;
+
+ // write the data buffer to the destination
+ dst.push_back( data_buffer.str() );
+}
+
+void CrushTester::write_integer_indexed_scalar_data_string(vector<string> &dst, int index, int scalar_data)
+{
+ stringstream data_buffer (stringstream::in | stringstream::out);
+
+ // pass the indexing variable to the data buffer
+ data_buffer << index;
+
+ // pass the input data to the buffer
+ data_buffer << ',' << scalar_data;
+ data_buffer << std::endl;
+
+ // write the data buffer to the destination
+ dst.push_back( data_buffer.str() );
+}
+void CrushTester::write_integer_indexed_scalar_data_string(vector<string> &dst, int index, float scalar_data)
+{
+ stringstream data_buffer (stringstream::in | stringstream::out);
+
+ // pass the indexing variable to the data buffer
+ data_buffer << index;
+
+ // pass the input data to the buffer
+ data_buffer << ',' << scalar_data;
+ data_buffer << std::endl;
+
+ // write the data buffer to the destination
+ dst.push_back( data_buffer.str() );
+}
+
+int CrushTester::test_with_fork(int timeout)
+{
+ ostringstream sink;
+ int r = fork_function(timeout, sink, [&]() {
+ return test();
+ });
+ if (r == -ETIMEDOUT) {
+ err << "timed out during smoke test (" << timeout << " seconds)";
+ }
+ return r;
+}
+
+namespace {
+ class BadCrushMap : public std::runtime_error {
+ public:
+ int item;
+ BadCrushMap(const char* msg, int id)
+ : std::runtime_error(msg), item(id) {}
+ };
+ // throws if any node in the crush fail to print
+ class CrushWalker : public CrushTreeDumper::Dumper<void> {
+ typedef void DumbFormatter;
+ typedef CrushTreeDumper::Dumper<DumbFormatter> Parent;
+ int max_id;
+ public:
+ CrushWalker(const CrushWrapper *crush, unsigned max_id)
+ : Parent(crush, CrushTreeDumper::name_map_t()), max_id(max_id) {}
+ void dump_item(const CrushTreeDumper::Item &qi, DumbFormatter *) override {
+ int type = -1;
+ if (qi.is_bucket()) {
+ if (!crush->get_item_name(qi.id)) {
+ throw BadCrushMap("unknown item name", qi.id);
+ }
+ type = crush->get_bucket_type(qi.id);
+ } else {
+ if (max_id > 0 && qi.id >= max_id) {
+ throw BadCrushMap("item id too large", qi.id);
+ }
+ type = 0;
+ }
+ if (!crush->get_type_name(type)) {
+ throw BadCrushMap("unknown type name", qi.id);
+ }
+ }
+ };
+}
+
+bool CrushTester::check_name_maps(unsigned max_id) const
+{
+ CrushWalker crush_walker(&crush, max_id);
+ try {
+ // walk through the crush, to see if its self-contained
+ crush_walker.dump(NULL);
+ // and see if the maps is also able to handle straying OSDs, whose id >= 0.
+ // "ceph osd tree" will try to print them, even they are not listed in the
+ // crush map.
+ crush_walker.dump_item(CrushTreeDumper::Item(0, 0, 0, 0), NULL);
+ } catch (const BadCrushMap& e) {
+ err << e.what() << ": item#" << e.item << std::endl;
+ return false;
+ }
+ return true;
+}
+
+static string get_rule_name(CrushWrapper& crush, int rule)
+{
+ if (crush.get_rule_name(rule))
+ return crush.get_rule_name(rule);
+ else
+ return string("rule") + std::to_string(rule);
+}
+
+void CrushTester::check_overlapped_rules() const
+{
+ namespace icl = boost::icl;
+ typedef std::set<string> RuleNames;
+ typedef icl::interval_map<int, RuleNames> Rules;
+ // <ruleset, type> => interval_map<size, {names}>
+ typedef std::map<std::pair<int, int>, Rules> RuleSets;
+ using interval = icl::interval<int>;
+
+ // mimic the logic of crush_find_rule(), but it only return the first matched
+ // one, but I am collecting all of them by the overlapped sizes.
+ RuleSets rulesets;
+ for (int rule = 0; rule < crush.get_max_rules(); rule++) {
+ if (!crush.rule_exists(rule)) {
+ continue;
+ }
+ Rules& rules = rulesets[{crush.get_rule_mask_ruleset(rule),
+ crush.get_rule_mask_type(rule)}];
+ rules += make_pair(interval::closed(crush.get_rule_mask_min_size(rule),
+ crush.get_rule_mask_max_size(rule)),
+ RuleNames{get_rule_name(crush, rule)});
+ }
+ for (auto i : rulesets) {
+ auto ruleset_type = i.first;
+ const Rules& rules = i.second;
+ for (auto r : rules) {
+ const RuleNames& names = r.second;
+ // if there are more than one rules covering the same size range,
+ // print them out.
+ if (names.size() > 1) {
+ err << "overlapped rules in ruleset " << ruleset_type.first << ": "
+ << boost::join(names, ", ") << "\n";
+ }
+ }
+ }
+}
+
+int CrushTester::test()
+{
+ if (min_rule < 0 || max_rule < 0) {
+ min_rule = 0;
+ max_rule = crush.get_max_rules() - 1;
+ }
+ if (min_x < 0 || max_x < 0) {
+ min_x = 0;
+ max_x = 1023;
+ }
+
+ // initial osd weights
+ vector<__u32> weight;
+
+ /*
+ * note device weight is set by crushtool
+ * (likely due to a given a command line option)
+ */
+ for (int o = 0; o < crush.get_max_devices(); o++) {
+ if (device_weight.count(o)) {
+ weight.push_back(device_weight[o]);
+ } else if (crush.check_item_present(o)) {
+ weight.push_back(0x10000);
+ } else {
+ weight.push_back(0);
+ }
+ }
+
+ if (output_utilization_all)
+ cerr << "devices weights (hex): " << std::hex << weight << std::dec << std::endl;
+
+ // make adjustments
+ adjust_weights(weight);
+
+
+ int num_devices_active = 0;
+ for (vector<__u32>::iterator p = weight.begin(); p != weight.end(); ++p)
+ if (*p > 0)
+ num_devices_active++;
+
+ if (output_choose_tries)
+ crush.start_choose_profile();
+
+ for (int r = min_rule; r < crush.get_max_rules() && r <= max_rule; r++) {
+ if (!crush.rule_exists(r)) {
+ if (output_statistics)
+ err << "rule " << r << " dne" << std::endl;
+ continue;
+ }
+ if (ruleset >= 0 &&
+ crush.get_rule_mask_ruleset(r) != ruleset) {
+ continue;
+ }
+ int minr = min_rep, maxr = max_rep;
+ if (min_rep < 0 || max_rep < 0) {
+ minr = crush.get_rule_mask_min_size(r);
+ maxr = crush.get_rule_mask_max_size(r);
+ }
+
+ if (output_statistics)
+ err << "rule " << r << " (" << crush.get_rule_name(r)
+ << "), x = " << min_x << ".." << max_x
+ << ", numrep = " << minr << ".." << maxr
+ << std::endl;
+
+ for (int nr = minr; nr <= maxr; nr++) {
+ vector<int> per(crush.get_max_devices());
+ map<int,int> sizes;
+
+ int num_objects = ((max_x - min_x) + 1);
+ float num_devices = (float) per.size(); // get the total number of devices, better to cast as a float here
+
+ // create a structure to hold data for post-processing
+ tester_data_set tester_data;
+ vector<float> vector_data_buffer_f;
+
+ // create a map to hold batch-level placement information
+ map<int, vector<int> > batch_per;
+ int objects_per_batch = num_objects / num_batches;
+ int batch_min = min_x;
+ int batch_max = min_x + objects_per_batch - 1;
+
+ // get the total weight of the system
+ int total_weight = 0;
+ for (unsigned i = 0; i < per.size(); i++)
+ total_weight += weight[i];
+
+ if (total_weight == 0)
+ continue;
+
+ // compute the expected number of objects stored per device in the absence of weighting
+ float expected_objects = std::min(nr, get_maximum_affected_by_rule(r)) * num_objects;
+
+ // compute each device's proportional weight
+ vector<float> proportional_weights( per.size() );
+
+ for (unsigned i = 0; i < per.size(); i++)
+ proportional_weights[i] = (float) weight[i] / (float) total_weight;
+
+ if (output_data_file) {
+ // stage the absolute weight information for post-processing
+ for (unsigned i = 0; i < per.size(); i++) {
+ tester_data.absolute_weights[i] = (float) weight[i] / (float)0x10000;
+ }
+
+ // stage the proportional weight information for post-processing
+ for (unsigned i = 0; i < per.size(); i++) {
+ if (proportional_weights[i] > 0 )
+ tester_data.proportional_weights[i] = proportional_weights[i];
+
+ tester_data.proportional_weights_all[i] = proportional_weights[i];
+ }
+
+ }
+ // compute the expected number of objects stored per device when a device's weight is considered
+ vector<float> num_objects_expected(num_devices);
+
+ for (unsigned i = 0; i < num_devices; i++)
+ num_objects_expected[i] = (proportional_weights[i]*expected_objects);
+
+ for (int current_batch = 0; current_batch < num_batches; current_batch++) {
+ if (current_batch == (num_batches - 1)) {
+ batch_max = max_x;
+ objects_per_batch = (batch_max - batch_min + 1);
+ }
+
+ float batch_expected_objects = std::min(nr, get_maximum_affected_by_rule(r)) * objects_per_batch;
+ vector<float> batch_num_objects_expected( per.size() );
+
+ for (unsigned i = 0; i < per.size() ; i++)
+ batch_num_objects_expected[i] = (proportional_weights[i]*batch_expected_objects);
+
+ // create a vector to hold placement results temporarily
+ vector<int> temporary_per ( per.size() );
+
+ for (int x = batch_min; x <= batch_max; x++) {
+ // create a vector to hold the results of a CRUSH placement or RNG simulation
+ vector<int> out;
+
+ if (use_crush) {
+ if (output_mappings)
+ err << "CRUSH"; // prepend CRUSH to placement output
+ uint32_t real_x = x;
+ if (pool_id != -1) {
+ real_x = crush_hash32_2(CRUSH_HASH_RJENKINS1, x, (uint32_t)pool_id);
+ }
+ crush.do_rule(r, real_x, out, nr, weight, 0);
+ } else {
+ if (output_mappings)
+ err << "RNG"; // prepend RNG to placement output to denote simulation
+ // test our new monte carlo placement generator
+ random_placement(r, out, nr, weight);
+ }
+
+ if (output_mappings)
+ err << " rule " << r << " x " << x << " " << out << std::endl;
+
+ if (output_data_file)
+ write_integer_indexed_vector_data_string(tester_data.placement_information, x, out);
+
+ bool has_item_none = false;
+ for (unsigned i = 0; i < out.size(); i++) {
+ if (out[i] != CRUSH_ITEM_NONE) {
+ per[out[i]]++;
+ temporary_per[out[i]]++;
+ } else {
+ has_item_none = true;
+ }
+ }
+
+ batch_per[current_batch] = temporary_per;
+ sizes[out.size()]++;
+ if (output_bad_mappings &&
+ (out.size() != (unsigned)nr ||
+ has_item_none)) {
+ err << "bad mapping rule " << r << " x " << x << " num_rep " << nr << " result " << out << std::endl;
+ }
+ }
+
+ batch_min = batch_max + 1;
+ batch_max = batch_min + objects_per_batch - 1;
+ }
+
+ for (unsigned i = 0; i < per.size(); i++)
+ if (output_utilization && !output_statistics)
+ err << " device " << i
+ << ":\t" << per[i] << std::endl;
+
+ for (map<int,int>::iterator p = sizes.begin(); p != sizes.end(); ++p)
+ if (output_statistics)
+ err << "rule " << r << " (" << crush.get_rule_name(r) << ") num_rep " << nr
+ << " result size == " << p->first << ":\t"
+ << p->second << "/" << (max_x-min_x+1) << std::endl;
+
+ if (output_statistics)
+ for (unsigned i = 0; i < per.size(); i++) {
+ if (output_utilization) {
+ if (num_objects_expected[i] > 0 && per[i] > 0) {
+ err << " device " << i << ":\t"
+ << "\t" << " stored " << ": " << per[i]
+ << "\t" << " expected " << ": " << num_objects_expected[i]
+ << std::endl;
+ }
+ } else if (output_utilization_all) {
+ err << " device " << i << ":\t"
+ << "\t" << " stored " << ": " << per[i]
+ << "\t" << " expected " << ": " << num_objects_expected[i]
+ << std::endl;
+ }
+ }
+
+ if (output_data_file)
+ for (unsigned i = 0; i < per.size(); i++) {
+ vector_data_buffer_f.clear();
+ vector_data_buffer_f.push_back( (float) per[i]);
+ vector_data_buffer_f.push_back( (float) num_objects_expected[i]);
+
+ write_integer_indexed_vector_data_string(tester_data.device_utilization_all, i, vector_data_buffer_f);
+
+ if (num_objects_expected[i] > 0 && per[i] > 0)
+ write_integer_indexed_vector_data_string(tester_data.device_utilization, i, vector_data_buffer_f);
+ }
+
+ if (output_data_file && num_batches > 1) {
+ // stage batch utilization information for post-processing
+ for (int i = 0; i < num_batches; i++) {
+ write_integer_indexed_vector_data_string(tester_data.batch_device_utilization_all, i, batch_per[i]);
+ write_integer_indexed_vector_data_string(tester_data.batch_device_expected_utilization_all, i, batch_per[i]);
+ }
+ }
+
+ string rule_tag = crush.get_rule_name(r);
+
+ if (output_csv)
+ write_data_set_to_csv(output_data_file_name+rule_tag,tester_data);
+ }
+ }
+
+ if (output_choose_tries) {
+ __u32 *v = 0;
+ int n = crush.get_choose_profile(&v);
+ for (int i=0; i<n; i++) {
+ cout.setf(std::ios::right);
+ cout << std::setw(2)
+ << i << ": " << std::setw(9) << v[i];
+ cout.unsetf(std::ios::right);
+ cout << std::endl;
+ }
+
+ crush.stop_choose_profile();
+ }
+
+ return 0;
+}
+
+int CrushTester::compare(CrushWrapper& crush2)
+{
+ if (min_rule < 0 || max_rule < 0) {
+ min_rule = 0;
+ max_rule = crush.get_max_rules() - 1;
+ }
+ if (min_x < 0 || max_x < 0) {
+ min_x = 0;
+ max_x = 1023;
+ }
+
+ // initial osd weights
+ vector<__u32> weight;
+
+ /*
+ * note device weight is set by crushtool
+ * (likely due to a given a command line option)
+ */
+ for (int o = 0; o < crush.get_max_devices(); o++) {
+ if (device_weight.count(o)) {
+ weight.push_back(device_weight[o]);
+ } else if (crush.check_item_present(o)) {
+ weight.push_back(0x10000);
+ } else {
+ weight.push_back(0);
+ }
+ }
+
+ // make adjustments
+ adjust_weights(weight);
+
+ map<int,int> bad_by_rule;
+
+ int ret = 0;
+ for (int r = min_rule; r < crush.get_max_rules() && r <= max_rule; r++) {
+ if (!crush.rule_exists(r)) {
+ if (output_statistics)
+ err << "rule " << r << " dne" << std::endl;
+ continue;
+ }
+ if (ruleset >= 0 &&
+ crush.get_rule_mask_ruleset(r) != ruleset) {
+ continue;
+ }
+ int minr = min_rep, maxr = max_rep;
+ if (min_rep < 0 || max_rep < 0) {
+ minr = crush.get_rule_mask_min_size(r);
+ maxr = crush.get_rule_mask_max_size(r);
+ }
+ int bad = 0;
+ for (int nr = minr; nr <= maxr; nr++) {
+ for (int x = min_x; x <= max_x; ++x) {
+ vector<int> out;
+ crush.do_rule(r, x, out, nr, weight, 0);
+ vector<int> out2;
+ crush2.do_rule(r, x, out2, nr, weight, 0);
+ if (out != out2) {
+ ++bad;
+ }
+ }
+ }
+ if (bad) {
+ ret = -1;
+ }
+ int max = (maxr - minr + 1) * (max_x - min_x + 1);
+ double ratio = (double)bad / (double)max;
+ cout << "rule " << r << " had " << bad << "/" << max
+ << " mismatched mappings (" << ratio << ")" << std::endl;
+ }
+ if (ret) {
+ cerr << "warning: maps are NOT equivalent" << std::endl;
+ } else {
+ cout << "maps appear equivalent" << std::endl;
+ }
+ return ret;
+}
generated by cgit v1.2.3 (git 2.39.1) at 2024-06-29 06:21:56 +0000