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trx_sys_t::undo_log_nonempty: Set to true if there are undo logs to rollback and purge. The algorithm for re-creating the undo tablespace when trx_sys_t::undo_log_nonempty is disabled: 1) trx_sys_t::reset_page(): Reset the TRX_SYS page and assign all rollback segment slots from 1..127 to FIL_NULL 2) Free the rollback segment header page of system tablespace for the slots 1..127 3) Update the binlog and WSREP information in system tablespace rollback segment header Step (1), (2) and Step (3) should happen atomically within a single mini-transaction. 4) srv_undo_delete_old_tablespaces(): Delete the old undo tablespaces present in the undo log directory 5) Make checkpoint to get rid of old undo log tablespaces redo logs 6) Assign new start space id for the undo log tablespaces 7) Re-create the specified undo log tablespaces. InnoDB uses same mtr for this one and step (6) 8) Make checkpoint again, so that server or mariabackup can read the undo log tablespace page0 before applying the redo logs srv_undo_tablespaces_reinit(): Recreate the undo log tablespaces. It does reset trx_sys page, delete the old undo tablespaces, update the binlog offset, write set replication checkpoint in system rollback segment page trx_rseg_update_binlog_offset(): Added 2 new parameters to pass binlog file name and binlog offset trx_rseg_array_init(): Return error if the rollback segment slot points to non-existent tablespace srv_undo_tablespaces_init(): Added new parameter mtr to initialize all undo tablespaces trx_assign_rseg_low(): Allow the transaction to use the rollback segment slots(1..127) even if InnoDB failed to change to the requested innodb_undo_tablespaces=0 srv_start(): Override the user specified value of innodb_undo_tablespaces variable with already existing actual undo tablespaces wf_incremental_process(): Detects whether TRX_SYS page has been modified since last backup. If it is then incremental backup fails and throws the information about taking full backup again xb_assign_undo_space_start(): Removed the function. Because undo001 has first undo space id value in page0 Added test case to test the scenario during startup and mariabackup incremental process too. Reviewed-by : Marko Mäkelä Tested-by : Matthias Leich
124 lines
4.2 KiB
C
124 lines
4.2 KiB
C
/*****************************************************************************
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Copyright (c) 1995, 2017, Oracle and/or its affiliates. All Rights Reserved.
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Copyright (c) 2017, 2022, MariaDB Corporation.
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This program is free software; you can redistribute it and/or modify it under
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the terms of the GNU General Public License as published by the Free Software
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Foundation; version 2 of the License.
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This program is distributed in the hope that it will be useful, but WITHOUT
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ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
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FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details.
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You should have received a copy of the GNU General Public License along with
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this program; if not, write to the Free Software Foundation, Inc.,
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51 Franklin Street, Fifth Floor, Boston, MA 02110-1335 USA
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*****************************************************************************/
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/**************************************************//**
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@file include/srv0start.h
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Starts the Innobase database server
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Created 10/10/1995 Heikki Tuuri
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*******************************************************/
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#pragma once
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#include "log0log.h"
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#include "ut0byte.h"
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// Forward declaration
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struct dict_table_t;
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/** Open the configured number of dedicated undo tablespaces.
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@param[in] create_new_undo whether the undo tablespaces has to be created
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@param[in,out] mtr mini-transaction
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@return DB_SUCCESS or error code */
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dberr_t srv_undo_tablespaces_init(bool create_new_undo, mtr_t *mtr);
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/** Start InnoDB.
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@param[in] create_new_db whether to create a new database
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@return DB_SUCCESS or error code */
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dberr_t srv_start(bool create_new_db);
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/**
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Shutdown purge to make sure that there is no possibility that we call any
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plugin code (e.g., audit) inside virtual column computation.
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*/
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void innodb_preshutdown();
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/** Shut down InnoDB. */
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void innodb_shutdown();
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/*************************************************************//**
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Copy the file path component of the physical file to parameter. It will
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copy up to and including the terminating path separator.
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@return number of bytes copied or ULINT_UNDEFINED if destination buffer
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is smaller than the path to be copied. */
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ulint
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srv_path_copy(
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/*==========*/
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char* dest, /*!< out: destination buffer */
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ulint dest_len, /*!< in: max bytes to copy */
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const char* basedir, /*!< in: base directory */
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const char* table_name) /*!< in: source table name */
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MY_ATTRIBUTE((nonnull, warn_unused_result));
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/** Get the meta-data filename from the table name for a
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single-table tablespace.
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@param[in] table table object
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@param[out] filename filename
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@param[in] max_len filename max length */
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void
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srv_get_meta_data_filename(
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dict_table_t* table,
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char* filename,
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ulint max_len);
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/** Get the encryption-data filename from the table name for a
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single-table tablespace.
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@param[in] table table object
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@param[out] filename filename
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@param[in] max_len filename max length */
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void
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srv_get_encryption_data_filename(
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dict_table_t* table,
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char* filename,
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ulint max_len);
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/** Log sequence number at shutdown */
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extern lsn_t srv_shutdown_lsn;
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/** TRUE if the server is being started */
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extern bool srv_is_being_started;
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/** TRUE if the server is being started, before rolling back any
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incomplete transactions */
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extern bool srv_startup_is_before_trx_rollback_phase;
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/** TRUE if a raw partition is in use */
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extern ibool srv_start_raw_disk_in_use;
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/** Shutdown state */
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enum srv_shutdown_t {
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SRV_SHUTDOWN_NONE = 0, /*!< Database running normally */
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/** Shutdown initiated in srv_shutdown_bg_undo_sources() */
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SRV_SHUTDOWN_INITIATED,
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SRV_SHUTDOWN_CLEANUP, /*!< Cleaning up in
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logs_empty_and_mark_files_at_shutdown() */
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SRV_SHUTDOWN_LAST_PHASE,/*!< Last phase after ensuring that
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the buffer pool can be freed: flush
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all file spaces and close all files */
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SRV_SHUTDOWN_EXIT_THREADS/*!< Exit all threads */
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};
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/** Whether any undo log records can be generated */
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extern bool srv_undo_sources;
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/** At a shutdown this value climbs from SRV_SHUTDOWN_NONE to
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SRV_SHUTDOWN_CLEANUP and then to SRV_SHUTDOWN_LAST_PHASE, and so on */
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extern enum srv_shutdown_t srv_shutdown_state;
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/** Files comprising the system tablespace */
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extern pfs_os_file_t files[1000];
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