709 lines
24 KiB
C++
709 lines
24 KiB
C++
/*
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=========================================================================
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Copyright (c) 2023 MIND Software LLC. All Rights Reserved.
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This file is part of the Software-Defined Storage MIND UStor Project.
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For more information about this product, please visit https://mindsw.io
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or contact us directly at info@mindsw.io
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=========================================================================
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*/
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#include <ctype.h>
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#include "cli.h"
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#include "cli_pool_cfg.h"
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#include "cluster_client.h"
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#include "epoll_manager.h"
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#include "pg_states.h"
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#include "str_util.h"
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struct pool_creator_t
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{
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cli_tool_t *parent;
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bool force;
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pool_configurator_t *cfg;
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int state = 0;
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cli_result_t result;
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struct {
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uint32_t retries = 5;
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uint32_t interval = 0;
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bool passed = false;
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} create_check;
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uint64_t new_id = 1;
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uint64_t new_pools_mod_rev;
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json11::Json state_node_tree;
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json11::Json new_pools;
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json11::Json osd_tags_json;
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json11::Json primary_affinity_tags_json;
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bool is_done() { return state == 100; }
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void loop()
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{
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if (state == 1)
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goto resume_1;
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else if (state == 2)
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goto resume_2;
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else if (state == 3)
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goto resume_3;
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else if (state == 4)
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goto resume_4;
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else if (state == 5)
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goto resume_5;
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else if (state == 6)
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goto resume_6;
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else if (state == 7)
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goto resume_7;
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else if (state == 8)
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goto resume_8;
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// Validate pool parameters
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if (!cfg->validate(parent->cli->st_cli, NULL, !force))
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{
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result = (cli_result_t){ .err = EINVAL, .text = cfg->get_error_string() + "\n" };
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state = 100;
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return;
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}
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// OSD tags
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if (cfg->osd_tags != "")
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{
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osd_tags_json = parent->parse_tags(cfg->osd_tags);
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}
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// Primary affinity tags
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if (cfg->primary_affinity_tags != "")
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{
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primary_affinity_tags_json = parent->parse_tags(cfg->primary_affinity_tags);
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}
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state = 1;
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resume_1:
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// If not forced, check that we have enough osds for pg_size
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if (!force)
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{
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// Get node_placement configuration from etcd
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parent->etcd_txn(json11::Json::object {
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{ "success", json11::Json::array {
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json11::Json::object {
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{ "request_range", json11::Json::object {
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{ "key", base64_encode(parent->cli->st_cli.etcd_prefix+"/config/node_placement") },
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} }
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},
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} },
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});
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state = 2;
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resume_2:
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if (parent->waiting > 0)
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return;
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if (parent->etcd_err.err)
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{
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result = parent->etcd_err;
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state = 100;
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return;
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}
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// Get state_node_tree based on node_placement and osd peer states
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{
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auto kv = parent->cli->st_cli.parse_etcd_kv(parent->etcd_result["responses"][0]["response_range"]["kvs"][0]);
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state_node_tree = get_state_node_tree(kv.value.object_items());
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}
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// Skip tag checks, if pool has none
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if (!osd_tags_json.is_null())
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{
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// Get osd configs (for tags) of osds in state_node_tree
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{
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json11::Json::array osd_configs;
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for (auto osd_num: state_node_tree["osds"].array_items())
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{
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osd_configs.push_back(json11::Json::object {
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{ "request_range", json11::Json::object {
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{ "key", base64_encode(parent->cli->st_cli.etcd_prefix+"/config/osd/"+osd_num.as_string()) },
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} }
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});
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}
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parent->etcd_txn(json11::Json::object { { "success", osd_configs, }, });
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}
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state = 3;
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resume_3:
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if (parent->waiting > 0)
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return;
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if (parent->etcd_err.err)
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{
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result = parent->etcd_err;
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state = 100;
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return;
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}
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// Filter out osds from state_node_tree based on pool/osd tags
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{
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std::vector<json11::Json> osd_configs;
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for (auto & ocr: parent->etcd_result["responses"].array_items())
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{
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auto kv = parent->cli->st_cli.parse_etcd_kv(ocr["response_range"]["kvs"][0]);
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osd_configs.push_back(kv.value);
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}
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state_node_tree = filter_state_node_tree_by_tags(state_node_tree, osd_configs);
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}
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}
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// Get stats (for block_size, bitmap_granularity, ...) of osds in state_node_tree
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{
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json11::Json::array osd_stats;
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for (auto osd_num: state_node_tree["osds"].array_items())
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{
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osd_stats.push_back(json11::Json::object {
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{ "request_range", json11::Json::object {
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{ "key", base64_encode(parent->cli->st_cli.etcd_prefix+"/osd/stats/"+osd_num.as_string()) },
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} }
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});
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}
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parent->etcd_txn(json11::Json::object { { "success", osd_stats, }, });
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}
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state = 4;
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resume_4:
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if (parent->waiting > 0)
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return;
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if (parent->etcd_err.err)
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{
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result = parent->etcd_err;
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state = 100;
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return;
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}
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// Filter osds from state_node_tree based on pool parameters and osd stats
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{
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std::vector<json11::Json> osd_stats;
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for (auto & ocr: parent->etcd_result["responses"].array_items())
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{
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auto kv = parent->cli->st_cli.parse_etcd_kv(ocr["response_range"]["kvs"][0]);
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osd_stats.push_back(kv.value);
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}
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state_node_tree = filter_state_node_tree_by_stats(state_node_tree, osd_stats);
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}
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// Check that pg_size <= max_pg_size
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{
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uint64_t max_pg_size = get_max_pg_size(state_node_tree["nodes"].object_items(),
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cfg->failure_domain, cfg->root_node);
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if (cfg->pg_size > max_pg_size)
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{
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result = (cli_result_t){
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.err = EINVAL,
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.text =
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"There are "+std::to_string(max_pg_size)+" failure domains with OSDs matching tags and "
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"block_size/bitmap_granularity/immediate_commit parameters, but you want to create a "
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"pool with "+std::to_string(cfg->pg_size)+" OSDs from different failure domains in a PG. "
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"Change parameters or add --force if you want to create a degraded pool and add OSDs later."
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};
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state = 100;
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return;
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}
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}
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}
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// Create pool
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state = 5;
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resume_5:
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// Get pools from etcd
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parent->etcd_txn(json11::Json::object {
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{ "success", json11::Json::array {
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json11::Json::object {
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{ "request_range", json11::Json::object {
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{ "key", base64_encode(parent->cli->st_cli.etcd_prefix+"/config/pools") },
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} }
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},
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} },
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});
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state = 6;
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resume_6:
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if (parent->waiting > 0)
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return;
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if (parent->etcd_err.err)
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{
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result = parent->etcd_err;
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state = 100;
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return;
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}
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{
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// Add new pool
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auto kv = parent->cli->st_cli.parse_etcd_kv(parent->etcd_result["responses"][0]["response_range"]["kvs"][0]);
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new_pools = create_pool(kv);
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if (new_pools.is_string())
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{
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result = (cli_result_t){ .err = EEXIST, .text = new_pools.string_value() };
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state = 100;
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return;
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}
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new_pools_mod_rev = kv.mod_revision;
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}
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// Update pools in etcd
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parent->etcd_txn(json11::Json::object {
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{ "compare", json11::Json::array {
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json11::Json::object {
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{ "target", "MOD" },
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{ "key", base64_encode(parent->cli->st_cli.etcd_prefix+"/config/pools") },
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{ "result", "LESS" },
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{ "mod_revision", new_pools_mod_rev+1 },
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}
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} },
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{ "success", json11::Json::array {
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json11::Json::object {
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{ "request_put", json11::Json::object {
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{ "key", base64_encode(parent->cli->st_cli.etcd_prefix+"/config/pools") },
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{ "value", base64_encode(new_pools.dump()) },
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} },
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},
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} },
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});
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state = 7;
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resume_7:
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if (parent->waiting > 0)
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return;
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if (parent->etcd_err.err)
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{
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result = parent->etcd_err;
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state = 100;
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return;
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}
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// Perform final create-check
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create_check.interval = parent->cli->config["mon_change_timeout"].uint64_value();
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if (!create_check.interval)
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create_check.interval = 1000;
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state = 8;
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resume_8:
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if (parent->waiting > 0)
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return;
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// Unless forced, check that pool was created and is active
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if (force)
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create_check.passed = true;
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else if (create_check.retries)
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{
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create_check.retries--;
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parent->waiting++;
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parent->epmgr->tfd->set_timer(create_check.interval, false, [this](int timer_id)
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{
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if (parent->cli->st_cli.pool_config.find(new_id) != parent->cli->st_cli.pool_config.end())
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{
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auto & pool_cfg = parent->cli->st_cli.pool_config[new_id];
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create_check.passed = pool_cfg.real_pg_count > 0;
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for (auto pg_it = pool_cfg.pg_config.begin(); pg_it != pool_cfg.pg_config.end(); pg_it++)
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{
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if (!(pg_it->second.cur_state & PG_ACTIVE))
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{
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create_check.passed = false;
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break;
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}
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}
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if (create_check.passed)
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create_check.retries = 0;
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}
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parent->waiting--;
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parent->ringloop->wakeup();
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});
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return;
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}
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if (!create_check.passed)
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{
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result = (cli_result_t) {
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.err = EAGAIN,
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.text =
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"Pool "+cfg->name+" was created, but failed to become active. This may indicate that cluster "
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"state has changed while the pool was being created. Please check the current state and "
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"correct the pool's configuration if necessary.\n"
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};
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}
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else
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{
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result = (cli_result_t){
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.err = 0,
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.text = "Pool "+cfg->name+" created",
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.data = new_pools[std::to_string(new_id)]
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};
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}
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state = 100;
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}
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// Returns a JSON object of form {"nodes": {...}, "osds": [...]} that
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// contains: all nodes (osds, hosts, ...) based on node_placement config
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// and current peer state, and a list of active peer osds.
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json11::Json get_state_node_tree(json11::Json::object node_placement)
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{
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// Erase non-peer osd nodes from node_placement
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for (auto np_it = node_placement.begin(); np_it != node_placement.end();)
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{
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// Numeric nodes are osds
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osd_num_t osd_num = stoull_full(np_it->first);
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// If node is osd and it is not in peer states, erase it
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if (osd_num > 0 &&
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parent->cli->st_cli.peer_states.find(osd_num) == parent->cli->st_cli.peer_states.end())
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{
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node_placement.erase(np_it++);
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}
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else
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np_it++;
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}
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// List of peer osds
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std::vector<std::string> peer_osds;
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// Record peer osds and add missing osds/hosts to np
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for (auto & ps: parent->cli->st_cli.peer_states)
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{
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std::string osd_num = std::to_string(ps.first);
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// Record peer osd
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peer_osds.push_back(osd_num);
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// Add osd, if necessary
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if (node_placement.find(osd_num) == node_placement.end())
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{
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std::string osd_host = ps.second["host"].as_string();
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// Add host, if necessary
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if (node_placement.find(osd_host) == node_placement.end())
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{
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node_placement[osd_host] = json11::Json::object {
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{ "level", "host" }
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};
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}
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node_placement[osd_num] = json11::Json::object {
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{ "parent", osd_host }
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};
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}
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}
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return json11::Json::object { { "osds", peer_osds }, { "nodes", node_placement } };
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}
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// Returns new state_node_tree based on given state_node_tree with osds
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// filtered out by tags in given osd_configs and current pool config.
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// Requires: state_node_tree["osds"] must match osd_configs 1-1
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json11::Json filter_state_node_tree_by_tags(const json11::Json & state_node_tree, std::vector<json11::Json> & osd_configs)
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{
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auto & osds = state_node_tree["osds"].array_items();
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// Accepted state_node_tree nodes
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auto accepted_nodes = state_node_tree["nodes"].object_items();
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// List of accepted osds
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std::vector<std::string> accepted_osds;
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for (size_t i = 0; i < osd_configs.size(); i++)
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{
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auto & oc = osd_configs[i].object_items();
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// Get osd number
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auto osd_num = osds[i].as_string();
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// We need tags in config to check against pool tags
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if (oc.find("tags") == oc.end())
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{
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// Exclude osd from state_node_tree nodes
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accepted_nodes.erase(osd_num);
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continue;
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}
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else
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{
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// If all pool tags are in osd tags, accept osd
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if (all_in_tags(osd_configs[i]["tags"], osd_tags_json))
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{
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accepted_osds.push_back(osd_num);
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}
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// Otherwise, exclude osd
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else
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{
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// Exclude osd from state_node_tree nodes
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accepted_nodes.erase(osd_num);
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}
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}
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}
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return json11::Json::object { { "osds", accepted_osds }, { "nodes", accepted_nodes } };
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}
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// Returns new state_node_tree based on given state_node_tree with osds
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// filtered out by stats parameters (block_size, bitmap_granularity) in
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// given osd_stats and current pool config.
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// Requires: state_node_tree["osds"] must match osd_stats 1-1
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json11::Json filter_state_node_tree_by_stats(const json11::Json & state_node_tree, std::vector<json11::Json> & osd_stats)
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{
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auto & osds = state_node_tree["osds"].array_items();
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// Accepted state_node_tree nodes
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auto accepted_nodes = state_node_tree["nodes"].object_items();
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// List of accepted osds
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std::vector<std::string> accepted_osds;
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for (size_t i = 0; i < osd_stats.size(); i++)
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{
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auto & os = osd_stats[i].object_items();
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// Get osd number
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auto osd_num = osds[i].as_string();
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// Check data_block_size
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if (os.find("data_block_size") != os.end())
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{
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uint64_t p_block_size = cfg->block_size ? cfg->block_size : parent->cli->st_cli.global_block_size;
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uint64_t o_block_size = osd_stats[i]["data_block_size"].int64_value();
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if (p_block_size != o_block_size)
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{
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accepted_nodes.erase(osd_num);
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continue;
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}
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}
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// Check bitmap_granularity
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if (os.find("bitmap_granularity") != os.end())
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{
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uint64_t p_bitmap_granularity = cfg->bitmap_granularity ?
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cfg->bitmap_granularity : parent->cli->st_cli.global_bitmap_granularity;
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uint64_t o_bitmap_granularity = osd_stats[i]["bitmap_granularity"].int64_value();
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if (p_bitmap_granularity != o_bitmap_granularity)
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{
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accepted_nodes.erase(osd_num);
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continue;
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}
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}
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// Check immediate_commit
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if (os.find("immediate_commit") != os.end())
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{
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uint32_t p_immediate_commit = (cfg->immediate_commit != "") ?
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parent->cli->st_cli.parse_immediate_commit_string(cfg->immediate_commit) : parent->cli->st_cli.global_immediate_commit;
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uint32_t o_immediate_commit = parent->cli->st_cli.parse_immediate_commit_string(osd_stats[i]["immediate_commit"].string_value());
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if (o_immediate_commit < p_immediate_commit)
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{
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accepted_nodes.erase(osd_num);
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continue;
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}
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}
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// Accept osd if all checks passed
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accepted_osds.push_back(osd_num);
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}
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return json11::Json::object { { "osds", accepted_osds }, { "nodes", accepted_nodes } };
|
|
}
|
|
|
|
// Returns maximum pg_size possible for given node_tree and failure_domain, starting at parent_node
|
|
uint64_t get_max_pg_size(json11::Json::object node_tree, const std::string & failure_domain = "", const std::string & parent_node = "")
|
|
{
|
|
uint64_t max_pg_sz = 0;
|
|
|
|
std::vector<std::string> nodes;
|
|
const std::string level = (failure_domain != "") ? failure_domain : "osd";
|
|
|
|
// Check if parnet node is an osd (numeric)
|
|
if (parent_node != "" && stoull_full(parent_node))
|
|
{
|
|
// Add it to node list if osd is in node tree
|
|
if (node_tree.find(parent_node) != node_tree.end())
|
|
nodes.push_back(parent_node);
|
|
}
|
|
// If parent node given, ...
|
|
else if (parent_node != "")
|
|
{
|
|
// ... look for children nodes of this parent
|
|
for (auto & sn: node_tree)
|
|
{
|
|
auto & props = sn.second.object_items();
|
|
|
|
auto parent_prop = props.find("parent");
|
|
if (parent_prop != props.end() && (parent_prop->second.as_string() == parent_node))
|
|
{
|
|
nodes.push_back(sn.first);
|
|
|
|
// If we're not looking for all osds, we only need a single
|
|
// child osd node
|
|
if (level != "osd" && stoull_full(sn.first))
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
// No parent node given, and we're not looking for all osds
|
|
else if (level != "osd")
|
|
{
|
|
// ... look for all level nodes
|
|
for (auto & sn: node_tree)
|
|
{
|
|
auto & props = sn.second.object_items();
|
|
|
|
auto level_prop = props.find("level");
|
|
if (level_prop != props.end() && (level_prop->second.as_string() == level))
|
|
{
|
|
nodes.push_back(sn.first);
|
|
}
|
|
}
|
|
}
|
|
// Otherwise, ...
|
|
else
|
|
{
|
|
// ... we're looking for osd nodes only
|
|
for (auto & sn: node_tree)
|
|
{
|
|
if (stoull_full(sn.first))
|
|
{
|
|
nodes.push_back(sn.first);
|
|
}
|
|
}
|
|
}
|
|
|
|
// Process gathered nodes
|
|
for (auto & node: nodes)
|
|
{
|
|
// Check for osd node, return constant max size
|
|
if (stoull_full(node))
|
|
{
|
|
max_pg_sz += 1;
|
|
}
|
|
// Otherwise, ...
|
|
else
|
|
{
|
|
// ... exclude parent node from tree, and ...
|
|
node_tree.erase(parent_node);
|
|
|
|
// ... descend onto the resulting tree
|
|
max_pg_sz += get_max_pg_size(node_tree, level, node);
|
|
}
|
|
}
|
|
|
|
return max_pg_sz;
|
|
}
|
|
|
|
json11::Json create_pool(const etcd_kv_t & kv)
|
|
{
|
|
for (auto & p: kv.value.object_items())
|
|
{
|
|
// ID
|
|
uint64_t pool_id;
|
|
char null_byte = 0;
|
|
sscanf(p.first.c_str(), "%lu%c", &pool_id, &null_byte);
|
|
new_id = std::max(pool_id+1, new_id);
|
|
// Name
|
|
if (p.second["name"].string_value() == cfg->name)
|
|
{
|
|
return json11::Json("Pool "+std::to_string(pool_id)+" has the same name\n");
|
|
}
|
|
}
|
|
|
|
json11::Json::object new_pool = json11::Json::object {
|
|
{ "name", cfg->name },
|
|
{ "scheme", cfg->scheme },
|
|
{ "pg_size", cfg->pg_size },
|
|
{ "pg_minsize", cfg->pg_minsize },
|
|
{ "pg_count", cfg->pg_count },
|
|
{ "parity_chunks", cfg->parity_chunks },
|
|
};
|
|
if (cfg->failure_domain != "")
|
|
new_pool["failure_domain"] = cfg->failure_domain;
|
|
if (cfg->max_osd_combinations)
|
|
new_pool["max_osd_combinations"] = cfg->max_osd_combinations;
|
|
if (cfg->block_size)
|
|
new_pool["block_size"] = cfg->block_size;
|
|
if (cfg->bitmap_granularity)
|
|
new_pool["bitmap_granularity"] = cfg->bitmap_granularity;
|
|
if (cfg->immediate_commit != "")
|
|
new_pool["immediate_commit"] = cfg->immediate_commit;
|
|
if (cfg->pg_stripe_size)
|
|
new_pool["pg_stripe_size"] = cfg->pg_stripe_size;
|
|
if (cfg->root_node != "")
|
|
new_pool["root_node"] = cfg->root_node;
|
|
if (cfg->scrub_interval != "")
|
|
new_pool["scrub_interval"] = cfg->scrub_interval;
|
|
if (cfg->osd_tags != "")
|
|
new_pool["osd_tags"] = osd_tags_json;
|
|
if (cfg->primary_affinity_tags != "")
|
|
new_pool["primary_affinity_tags"] = primary_affinity_tags_json;
|
|
|
|
auto res = kv.value.object_items();
|
|
res[std::to_string(new_id)] = new_pool;
|
|
return res;
|
|
}
|
|
|
|
// Checks whether tags2 tags are all in tags1 tags
|
|
bool all_in_tags(json11::Json tags1, json11::Json tags2)
|
|
{
|
|
if (!tags2.is_array())
|
|
{
|
|
tags2 = json11::Json::array{ tags2.string_value() };
|
|
}
|
|
if (!tags1.is_array())
|
|
{
|
|
tags1 = json11::Json::array{ tags1.string_value() };
|
|
}
|
|
for (auto & tag2: tags2.array_items())
|
|
{
|
|
bool found = false;
|
|
for (auto & tag1: tags1.array_items())
|
|
{
|
|
if (tag1 == tag2)
|
|
{
|
|
found = true;
|
|
break;
|
|
}
|
|
}
|
|
if (!found)
|
|
{
|
|
return false;
|
|
}
|
|
}
|
|
return true;
|
|
}
|
|
};
|
|
|
|
std::function<bool(cli_result_t &)> cli_tool_t::start_pool_create(json11::Json cfg)
|
|
{
|
|
auto pool_creator = new pool_creator_t();
|
|
pool_creator->parent = this;
|
|
|
|
pool_creator->cfg = new pool_configurator_t();
|
|
if (!pool_creator->cfg->parse(cfg, true))
|
|
{
|
|
std::string err = pool_creator->cfg->get_error_string();
|
|
return [err](cli_result_t & result)
|
|
{
|
|
result = (cli_result_t){ .err = EINVAL, .text = err + "\n" };
|
|
return true;
|
|
};
|
|
}
|
|
|
|
pool_creator->force = !cfg["force"].is_null();
|
|
|
|
return [pool_creator](cli_result_t & result)
|
|
{
|
|
pool_creator->loop();
|
|
if (pool_creator->is_done())
|
|
{
|
|
result = pool_creator->result;
|
|
delete pool_creator;
|
|
return true;
|
|
}
|
|
return false;
|
|
};
|
|
}
|