228 lines
7.1 KiB
C++
228 lines
7.1 KiB
C++
#pragma once
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#include <sys/types.h>
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#include <time.h>
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#include <sys/ioctl.h>
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#include <sys/stat.h>
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#include <fcntl.h>
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#include <unistd.h>
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#include <malloc.h>
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#include <arpa/inet.h>
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#include <malloc.h>
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#include <set>
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#include <deque>
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#include "blockstore.h"
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#include "ringloop.h"
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#include "timerfd_manager.h"
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#include "osd_peering_pg.h"
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#include "messenger.h"
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#include "etcd_state_client.h"
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#define OSD_LOADING_PGS 0x01
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#define OSD_PEERING_PGS 0x04
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#define OSD_FLUSHING_PGS 0x08
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#define OSD_RECOVERING 0x10
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#define IMMEDIATE_NONE 0
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#define IMMEDIATE_SMALL 1
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#define IMMEDIATE_ALL 2
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#define MAX_AUTOSYNC_INTERVAL 3600
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#define DEFAULT_AUTOSYNC_INTERVAL 5
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#define MAX_RECOVERY_QUEUE 2048
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#define DEFAULT_RECOVERY_QUEUE 4
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#define DEFAULT_PG_STRIPE_SIZE 4*1024*1024 // 4 MB by default
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//#define OSD_STUB
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extern const char* osd_op_names[];
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struct osd_object_id_t
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{
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osd_num_t osd_num;
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object_id oid;
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};
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struct osd_recovery_op_t
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{
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int st = 0;
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bool degraded = false;
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pg_num_t pg_num = 0;
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object_id oid = { 0 };
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osd_op_t *osd_op = NULL;
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};
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class osd_t
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{
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// config
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blockstore_config_t config;
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int etcd_report_interval = 30;
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bool readonly = false;
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osd_num_t osd_num = 1; // OSD numbers start with 1
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bool run_primary = false;
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std::string bind_address;
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int bind_port, listen_backlog;
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// FIXME: Implement client queue depth limit
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int client_queue_depth = 128;
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bool allow_test_ops = true;
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int print_stats_interval = 3;
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int immediate_commit = IMMEDIATE_NONE;
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int autosync_interval = DEFAULT_AUTOSYNC_INTERVAL; // sync every 5 seconds
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int recovery_queue_depth = DEFAULT_RECOVERY_QUEUE;
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int log_level = 0;
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// cluster state
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etcd_state_client_t st_cli;
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osd_messenger_t c_cli;
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int etcd_failed_attempts = 0;
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std::string etcd_lease_id;
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json11::Json self_state;
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bool loading_peer_config = false;
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std::set<pg_num_t> pg_state_dirty;
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bool pg_config_applied = false;
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bool etcd_reporting_pg_state = false;
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bool etcd_reporting_stats = false;
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// peers and PGs
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std::map<pg_num_t, pg_t> pgs;
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std::set<pg_num_t> dirty_pgs;
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uint64_t misplaced_objects = 0, degraded_objects = 0, incomplete_objects = 0;
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int peering_state = 0;
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unsigned pg_count = 0;
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std::map<object_id, osd_recovery_op_t> recovery_ops;
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osd_op_t *autosync_op = NULL;
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// Unstable writes
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std::map<osd_object_id_t, uint64_t> unstable_writes;
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std::deque<osd_op_t*> syncs_in_progress;
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// client & peer I/O
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bool stopping = false;
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int inflight_ops = 0;
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blockstore_t *bs;
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uint32_t bs_block_size, bs_disk_alignment;
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uint64_t pg_stripe_size = DEFAULT_PG_STRIPE_SIZE;
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ring_loop_t *ringloop;
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timerfd_manager_t *tfd = NULL;
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int wait_state = 0;
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int epoll_fd = 0;
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int listening_port = 0;
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int listen_fd = 0;
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ring_consumer_t consumer;
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std::map<int, std::function<void(int, int)>> epoll_handlers;
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// op statistics
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osd_op_stats_t prev_stats;
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const char* recovery_stat_names[2] = { "degraded", "misplaced" };
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uint64_t recovery_stat_count[2][2] = { 0 };
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uint64_t recovery_stat_bytes[2][2] = { 0 };
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// cluster connection
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void parse_config(blockstore_config_t & config);
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void init_cluster();
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void on_change_osd_state_hook(uint64_t osd_num);
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void on_change_etcd_state_hook(json11::Json::object & changes);
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void on_load_config_hook(json11::Json::object & changes);
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json11::Json on_load_pgs_checks_hook();
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void on_load_pgs_hook(bool success);
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void bind_socket();
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void acquire_lease();
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json11::Json get_osd_state();
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void create_osd_state();
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void renew_lease();
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void print_stats();
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void reset_stats();
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json11::Json get_statistics();
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void report_statistics();
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void report_pg_state(pg_t & pg);
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void report_pg_states();
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void apply_pg_count();
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void apply_pg_config();
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// event loop, socket read/write
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void loop();
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void set_fd_handler(int fd, std::function<void(int, int)> handler);
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void handle_epoll_events();
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// peer handling (primary OSD logic)
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void parse_test_peer(std::string peer);
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void handle_peers();
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void repeer_pgs(osd_num_t osd_num);
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void start_pg_peering(pg_num_t pg_num);
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void submit_sync_and_list_subop(osd_num_t role_osd, pg_peering_state_t *ps);
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void submit_list_subop(osd_num_t role_osd, pg_peering_state_t *ps);
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void discard_list_subop(osd_op_t *list_op);
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bool stop_pg(pg_num_t pg_num);
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void finish_stop_pg(pg_t & pg);
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// flushing, recovery and backfill
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void submit_pg_flush_ops(pg_num_t pg_num);
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void handle_flush_op(bool rollback, pg_num_t pg_num, pg_flush_batch_t *fb, osd_num_t peer_osd, int retval);
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void submit_flush_op(pg_num_t pg_num, pg_flush_batch_t *fb, bool rollback, osd_num_t peer_osd, int count, obj_ver_id *data);
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bool pick_next_recovery(osd_recovery_op_t &op);
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void submit_recovery_op(osd_recovery_op_t *op);
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bool continue_recovery();
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pg_osd_set_state_t* change_osd_set(pg_osd_set_state_t *st, pg_t *pg);
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// op execution
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void exec_op(osd_op_t *cur_op);
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void finish_op(osd_op_t *cur_op, int retval);
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// secondary ops
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void exec_sync_stab_all(osd_op_t *cur_op);
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void exec_show_config(osd_op_t *cur_op);
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void exec_secondary(osd_op_t *cur_op);
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void secondary_op_callback(osd_op_t *cur_op);
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// primary ops
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void autosync();
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bool prepare_primary_rw(osd_op_t *cur_op);
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void continue_primary_read(osd_op_t *cur_op);
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void continue_primary_write(osd_op_t *cur_op);
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void cancel_primary_write(osd_op_t *cur_op);
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void continue_primary_sync(osd_op_t *cur_op);
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void continue_primary_del(osd_op_t *cur_op);
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bool check_write_queue(osd_op_t *cur_op, pg_t & pg);
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void remove_object_from_state(object_id & oid, pg_osd_set_state_t *object_state, pg_t &pg);
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bool remember_unstable_write(osd_op_t *cur_op, pg_t & pg, pg_osd_set_t & loc_set, int base_state);
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void handle_primary_subop(osd_op_t *subop, osd_op_t *cur_op);
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void handle_primary_bs_subop(osd_op_t *subop);
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void add_bs_subop_stats(osd_op_t *subop);
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void pg_cancel_write_queue(pg_t & pg, osd_op_t *first_op, object_id oid, int retval);
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void submit_primary_subops(int submit_type, int read_pg_size, const uint64_t* osd_set, osd_op_t *cur_op);
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void submit_primary_del_subops(osd_op_t *cur_op, uint64_t *cur_set, pg_osd_set_t & loc_set);
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void submit_primary_sync_subops(osd_op_t *cur_op);
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void submit_primary_stab_subops(osd_op_t *cur_op);
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inline pg_num_t map_to_pg(object_id oid)
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{
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return (oid.inode + oid.stripe / pg_stripe_size) % pg_count + 1;
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}
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public:
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osd_t(blockstore_config_t & config, blockstore_t *bs, ring_loop_t *ringloop);
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~osd_t();
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void force_stop(int exitcode);
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bool shutdown();
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};
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inline bool operator == (const osd_object_id_t & a, const osd_object_id_t & b)
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{
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return a.osd_num == b.osd_num && a.oid.inode == b.oid.inode && a.oid.stripe == b.oid.stripe;
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}
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inline bool operator < (const osd_object_id_t & a, const osd_object_id_t & b)
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{
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return a.osd_num < b.osd_num || a.osd_num == b.osd_num && (
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a.oid.inode < b.oid.inode || a.oid.inode == b.oid.inode && a.oid.stripe < b.oid.stripe
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);
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}
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