/*****************************************************************************
Copyright (c) 1996, 2014, Oracle and/or its affiliates. All rights reserved.
Copyright (c) 2008, Google Inc.
Copyright (c) 2009, Percona Inc.
Portions of this file contain modifications contributed and copyrighted by
Google, Inc. Those modifications are gratefully acknowledged and are described
briefly in the InnoDB documentation. The contributions by Google are
incorporated with their permission, and subject to the conditions contained in
the file COPYING.Google.
Portions of this file contain modifications contributed and copyrighted
by Percona Inc.. Those modifications are
gratefully acknowledged and are described briefly in the InnoDB
documentation. The contributions by Percona Inc. are incorporated with
their permission, and subject to the conditions contained in the file
COPYING.Percona.
This program is free software; you can redistribute it and/or modify it under
the terms of the GNU General Public License as published by the Free Software
Foundation; version 2 of the License.
This program is distributed in the hope that it will be useful, but WITHOUT
ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details.
You should have received a copy of the GNU General Public License along with
this program; if not, write to the Free Software Foundation, Inc.,
51 Franklin Street, Suite 500, Boston, MA 02110-1335 USA
*****************************************************************************/
/********************************************************************//**
@file srv/srv0start.cc
Starts the InnoDB database server
Created 2/16/1996 Heikki Tuuri
*************************************************************************/
#include "mysqld.h"
#include "pars0pars.h"
#include "row0ftsort.h"
#include "ut0mem.h"
#include "mem0mem.h"
#include "data0data.h"
#include "data0type.h"
#include "dict0dict.h"
#include "buf0buf.h"
#include "buf0dump.h"
#include "os0file.h"
#include "os0thread.h"
#include "fil0fil.h"
#include "fsp0fsp.h"
#include "rem0rec.h"
#include "mtr0mtr.h"
#include "log0log.h"
#include "log0recv.h"
#include "page0page.h"
#include "page0cur.h"
#include "trx0trx.h"
#include "trx0sys.h"
#include "btr0btr.h"
#include "btr0cur.h"
#include "rem0rec.h"
#include "ibuf0ibuf.h"
#include "srv0start.h"
#include "srv0srv.h"
#ifndef UNIV_HOTBACKUP
# include "trx0rseg.h"
# include "os0proc.h"
# include "sync0sync.h"
# include "buf0flu.h"
# include "buf0rea.h"
# include "dict0boot.h"
# include "dict0load.h"
# include "dict0stats_bg.h"
# include "que0que.h"
# include "usr0sess.h"
# include "lock0lock.h"
# include "trx0roll.h"
# include "trx0purge.h"
# include "lock0lock.h"
# include "pars0pars.h"
# include "btr0sea.h"
# include "rem0cmp.h"
# include "dict0crea.h"
# include "row0ins.h"
# include "row0sel.h"
# include "row0upd.h"
# include "row0row.h"
# include "row0mysql.h"
# include "btr0pcur.h"
# include "os0sync.h"
# include "zlib.h"
# include "ut0crc32.h"
/** Log sequence number immediately after startup */
UNIV_INTERN lsn_t srv_start_lsn;
/** Log sequence number at shutdown */
UNIV_INTERN lsn_t srv_shutdown_lsn;
#ifdef HAVE_DARWIN_THREADS
# include <sys/utsname.h>
/** TRUE if the F_FULLFSYNC option is available */
UNIV_INTERN ibool srv_have_fullfsync = FALSE;
#endif
/** TRUE if a raw partition is in use */
UNIV_INTERN ibool srv_start_raw_disk_in_use = FALSE;
/** TRUE if the server is being started, before rolling back any
incomplete transactions */
UNIV_INTERN ibool srv_startup_is_before_trx_rollback_phase = FALSE;
/** TRUE if the server is being started */
UNIV_INTERN ibool srv_is_being_started = FALSE;
/** TRUE if the server was successfully started */
UNIV_INTERN ibool srv_was_started = FALSE;
/** TRUE if innobase_start_or_create_for_mysql() has been called */
static ibool srv_start_has_been_called = FALSE;
/** At a shutdown this value climbs from SRV_SHUTDOWN_NONE to
SRV_SHUTDOWN_CLEANUP and then to SRV_SHUTDOWN_LAST_PHASE, and so on */
UNIV_INTERN enum srv_shutdown_state srv_shutdown_state = SRV_SHUTDOWN_NONE;
/** Files comprising the system tablespace */
static os_file_t files[1000];
/** io_handler_thread parameters for thread identification */
static ulint n[SRV_MAX_N_IO_THREADS + 6];
/** io_handler_thread identifiers, 32 is the maximum number of purge threads */
static os_thread_id_t thread_ids[SRV_MAX_N_IO_THREADS + 6 + 32];
/** We use this mutex to test the return value of pthread_mutex_trylock
on successful locking. HP-UX does NOT return 0, though Linux et al do. */
static os_fast_mutex_t srv_os_test_mutex;
/** Name of srv_monitor_file */
static char* srv_monitor_file_name;
#endif /* !UNIV_HOTBACKUP */
/** Default undo tablespace size in UNIV_PAGEs count (10MB). */
static const ulint SRV_UNDO_TABLESPACE_SIZE_IN_PAGES =
((1024 * 1024) * 10) / UNIV_PAGE_SIZE_DEF;
/** */
#define SRV_N_PENDING_IOS_PER_THREAD OS_AIO_N_PENDING_IOS_PER_THREAD
#define SRV_MAX_N_PENDING_SYNC_IOS 100
#ifdef UNIV_PFS_THREAD
/* Keys to register InnoDB threads with performance schema */
UNIV_INTERN mysql_pfs_key_t io_handler_thread_key;
UNIV_INTERN mysql_pfs_key_t srv_lock_timeout_thread_key;
UNIV_INTERN mysql_pfs_key_t srv_error_monitor_thread_key;
UNIV_INTERN mysql_pfs_key_t srv_monitor_thread_key;
UNIV_INTERN mysql_pfs_key_t srv_master_thread_key;
UNIV_INTERN mysql_pfs_key_t srv_purge_thread_key;
#endif /* UNIV_PFS_THREAD */
/*********************************************************************//**
Convert a numeric string that optionally ends in G or M or K, to a number
containing megabytes.
@return next character in string */
static
char*
srv_parse_megabytes(
/*================*/
char* str, /*!< in: string containing a quantity in bytes */
ulint* megs) /*!< out: the number in megabytes */
{
char* endp;
ulint size;
size = strtoul(str, &endp, 10);
str = endp;
switch (*str) {
case 'G': case 'g':
size *= 1024;
/* fall through */
case 'M': case 'm':
str++;
break;
case 'K': case 'k':
size /= 1024;
str++;
break;
default:
size /= 1024 * 1024;
break;
}
*megs = size;
return(str);
}
/*********************************************************************//**
Check if a file can be opened in read-write mode.
@return true if it doesn't exist or can be opened in rw mode. */
static
bool
srv_file_check_mode(
/*================*/
const char* name) /*!< in: filename to check */
{
os_file_stat_t stat;
memset(&stat, 0x0, sizeof(stat));
dberr_t err = os_file_get_status(name, &stat, true);
if (err == DB_FAIL) {
ib_logf(IB_LOG_LEVEL_ERROR,
"os_file_get_status() failed on '%s'. Can't determine "
"file permissions", name);
return(false);
} else if (err == DB_SUCCESS) {
/* Note: stat.rw_perm is only valid of files */
if (stat.type == OS_FILE_TYPE_FILE
|| stat.type == OS_FILE_TYPE_BLOCK) {
if (!stat.rw_perm) {
ib_logf(IB_LOG_LEVEL_ERROR,
"%s can't be opened in %s mode",
name,
srv_read_only_mode
? "read" : "read-write");
return(false);
}
} else {
/* Not a regular file, bail out. */
ib_logf(IB_LOG_LEVEL_ERROR,
"'%s' not a regular file.", name);
return(false);
}
} else {
/* This is OK. If the file create fails on RO media, there
is nothing we can do. */
ut_a(err == DB_NOT_FOUND);
}
return(true);
}
/*********************************************************************//**
Reads the data files and their sizes from a character string given in
the .cnf file.
@return TRUE if ok, FALSE on parse error */
UNIV_INTERN
ibool
srv_parse_data_file_paths_and_sizes(
/*================================*/
char* str) /*!< in/out: the data file path string */
{
char* input_str;
char* path;
ulint size;
ulint i = 0;
srv_auto_extend_last_data_file = FALSE;
srv_last_file_size_max = 0;
srv_data_file_names = NULL;
srv_data_file_sizes = NULL;
srv_data_file_is_raw_partition = NULL;
input_str = str;
/* First calculate the number of data files and check syntax:
path:size[M | G];path:size[M | G]... . Note that a Windows path may
contain a drive name and a ':'. */
while (*str != '\0') {
path = str;
while ((*str != ':' && *str != '\0')
|| (*str == ':'
&& (*(str + 1) == '\\' || *(str + 1) == '/'
|| *(str + 1) == ':'))) {
str++;
}
if (*str == '\0') {
return(FALSE);
}
str++;
str = srv_parse_megabytes(str, &size);
if (0 == strncmp(str, ":autoextend",
(sizeof ":autoextend") - 1)) {
str += (sizeof ":autoextend") - 1;
if (0 == strncmp(str, ":max:",
(sizeof ":max:") - 1)) {
str += (sizeof ":max:") - 1;
str = srv_parse_megabytes(str, &size);
}
if (*str != '\0') {
return(FALSE);
}
}
if (strlen(str) >= 6
&& *str == 'n'
&& *(str + 1) == 'e'
&& *(str + 2) == 'w') {
str += 3;
}
if (*str == 'r' && *(str + 1) == 'a' && *(str + 2) == 'w') {
str += 3;
}
if (size == 0) {
return(FALSE);
}
i++;
if (*str == ';') {
str++;
} else if (*str != '\0') {
return(FALSE);
}
}
if (i == 0) {
/* If innodb_data_file_path was defined it must contain
at least one data file definition */
return(FALSE);
}
srv_data_file_names = static_cast<char**>(
malloc(i * sizeof *srv_data_file_names));
srv_data_file_sizes = static_cast<ulint*>(
malloc(i * sizeof *srv_data_file_sizes));
srv_data_file_is_raw_partition = static_cast<ulint*>(
malloc(i * sizeof *srv_data_file_is_raw_partition));
srv_n_data_files = i;
/* Then store the actual values to our arrays */
str = input_str;
i = 0;
while (*str != '\0') {
path = str;
/* Note that we must step over the ':' in a Windows path;
a Windows path normally looks like C:\ibdata\ibdata1:1G, but
a Windows raw partition may have a specification like
\\.\C::1Gnewraw or \\.\PHYSICALDRIVE2:1Gnewraw */
while ((*str != ':' && *str != '\0')
|| (*str == ':'
&& (*(str + 1) == '\\' || *(str + 1) == '/'
|| *(str + 1) == ':'))) {
str++;
}
if (*str == ':') {
/* Make path a null-terminated string */
*str = '\0';
str++;
}
str = srv_parse_megabytes(str, &size);
srv_data_file_names[i] = path;
srv_data_file_sizes[i] = size;
if (0 == strncmp(str, ":autoextend",
(sizeof ":autoextend") - 1)) {
srv_auto_extend_last_data_file = TRUE;
str += (sizeof ":autoextend") - 1;
if (0 == strncmp(str, ":max:",
(sizeof ":max:") - 1)) {
str += (sizeof ":max:") - 1;
str = srv_parse_megabytes(
str, &srv_last_file_size_max);
}
if (*str != '\0') {
return(FALSE);
}
}
(srv_data_file_is_raw_partition)[i] = 0;
if (strlen(str) >= 6
&& *str == 'n'
&& *(str + 1) == 'e'
&& *(str + 2) == 'w') {
str += 3;
(srv_data_file_is_raw_partition)[i] = SRV_NEW_RAW;
}
if (*str == 'r' && *(str + 1) == 'a' && *(str + 2) == 'w') {
str += 3;
if ((srv_data_file_is_raw_partition)[i] == 0) {
(srv_data_file_is_raw_partition)[i] = SRV_OLD_RAW;
}
}
i++;
if (*str == ';') {
str++;
}
}
return(TRUE);
}
/*********************************************************************//**
Frees the memory allocated by srv_parse_data_file_paths_and_sizes()
and srv_parse_log_group_home_dirs(). */
UNIV_INTERN
void
srv_free_paths_and_sizes(void)
/*==========================*/
{
free(srv_data_file_names);
srv_data_file_names = NULL;
free(srv_data_file_sizes);
srv_data_file_sizes = NULL;
free(srv_data_file_is_raw_partition);
srv_data_file_is_raw_partition = NULL;
}
#ifndef UNIV_HOTBACKUP
/********************************************************************//**
I/o-handler thread function.
@return OS_THREAD_DUMMY_RETURN */
extern "C" UNIV_INTERN
os_thread_ret_t
DECLARE_THREAD(io_handler_thread)(
/*==============================*/
void* arg) /*!< in: pointer to the number of the segment in
the aio array */
{
ulint segment;
segment = *((ulint*) arg);
#ifdef UNIV_DEBUG_THREAD_CREATION
fprintf(stderr, "Io handler thread %lu starts, id %lu\n", segment,
os_thread_pf(os_thread_get_curr_id()));
#endif
#ifdef UNIV_PFS_THREAD
pfs_register_thread(io_handler_thread_key);
#endif /* UNIV_PFS_THREAD */
while (srv_shutdown_state != SRV_SHUTDOWN_EXIT_THREADS) {
fil_aio_wait(segment);
}
/* We count the number of threads in os_thread_exit(). A created
thread should always use that to exit and not use return() to exit.
The thread actually never comes here because it is exited in an
os_event_wait(). */
os_thread_exit(NULL);
OS_THREAD_DUMMY_RETURN;
}
#endif /* !UNIV_HOTBACKUP */
/*********************************************************************//**
Normalizes a directory path for Windows: converts slashes to backslashes. */
UNIV_INTERN
void
srv_normalize_path_for_win(
/*=======================*/
char* str __attribute__((unused))) /*!< in/out: null-terminated
character string */
{
#ifdef __WIN__
for (; *str; str++) {
if (*str == '/') {
*str = '\\';
}
}
#endif
}
#ifndef UNIV_HOTBACKUP
/*********************************************************************//**
Creates a log file.
@return DB_SUCCESS or error code */
static __attribute__((nonnull, warn_unused_result))
dberr_t
create_log_file(
/*============*/
os_file_t* file, /*!< out: file handle */
const char* name) /*!< in: log file name */
{
ibool ret;
*file = os_file_create(
innodb_file_log_key, name,
OS_FILE_CREATE|OS_FILE_ON_ERROR_NO_EXIT, OS_FILE_NORMAL,
OS_LOG_FILE, &ret);
if (!ret) {
ib_logf(IB_LOG_LEVEL_ERROR, "Cannot create %s", name);
return(DB_ERROR);
}
ib_logf(IB_LOG_LEVEL_INFO,
"Setting log file %s size to %lu MB",
name, (ulong) srv_log_file_size
>> (20 - UNIV_PAGE_SIZE_SHIFT));
ret = os_file_set_size(name, *file,
(os_offset_t) srv_log_file_size
<< UNIV_PAGE_SIZE_SHIFT);
if (!ret) {
ib_logf(IB_LOG_LEVEL_ERROR, "Cannot set log file"
" %s to size %lu MB", name, (ulong) srv_log_file_size
>> (20 - UNIV_PAGE_SIZE_SHIFT));
return(DB_ERROR);
}
ret = os_file_close(*file);
ut_a(ret);
return(DB_SUCCESS);
}
/** Initial number of the first redo log file */
#define INIT_LOG_FILE0 (SRV_N_LOG_FILES_MAX + 1)
#ifdef DBUG_OFF
# define RECOVERY_CRASH(x) do {} while(0)
#else
# define RECOVERY_CRASH(x) do { \
if (srv_force_recovery_crash == x) { \
fprintf(stderr, "innodb_force_recovery_crash=%lu\n", \
srv_force_recovery_crash); \
fflush(stderr); \
exit(3); \
} \
} while (0)
#endif
/*********************************************************************//**
Creates all log files.
@return DB_SUCCESS or error code */
static
dberr_t
create_log_files(
/*=============*/
bool create_new_db, /*!< in: TRUE if new database is being
created */
char* logfilename, /*!< in/out: buffer for log file name */
size_t dirnamelen, /*!< in: length of the directory path */
lsn_t lsn, /*!< in: FIL_PAGE_FILE_FLUSH_LSN value */
char*& logfile0) /*!< out: name of the first log file */
{
if (srv_read_only_mode) {
ib_logf(IB_LOG_LEVEL_ERROR,
"Cannot create log files in read-only mode");
return(DB_READ_ONLY);
}
/* We prevent system tablespace creation with existing files in
data directory. So we do not delete log files when creating new system
tablespace */
if (!create_new_db) {
/* Remove any old log files. */
for (unsigned i = 0; i <= INIT_LOG_FILE0; i++) {
sprintf(logfilename + dirnamelen, "ib_logfile%u", i);
/* Ignore errors about non-existent files or files
that cannot be removed. The create_log_file() will
return an error when the file exists. */
#ifdef __WIN__
DeleteFile((LPCTSTR) logfilename);
#else
unlink(logfilename);
#endif
/* Crashing after deleting the first
file should be recoverable. The buffer
pool was clean, and we can simply create
all log files from the scratch. */
RECOVERY_CRASH(6);
}
}
ut_ad(!buf_pool_check_no_pending_io());
RECOVERY_CRASH(7);
for (unsigned i = 0; i < srv_n_log_files; i++) {
sprintf(logfilename + dirnamelen,
"ib_logfile%u", i ? i : INIT_LOG_FILE0);
dberr_t err = create_log_file(&files[i], logfilename);
if (err != DB_SUCCESS) {
return(err);
}
}
RECOVERY_CRASH(8);
/* We did not create the first log file initially as
ib_logfile0, so that crash recovery cannot find it until it
has been completed and renamed. */
sprintf(logfilename + dirnamelen, "ib_logfile%u", INIT_LOG_FILE0);
fil_space_create(
logfilename, SRV_LOG_SPACE_FIRST_ID,
fsp_flags_set_page_size(0, UNIV_PAGE_SIZE),
FIL_LOG);
ut_a(fil_validate());
logfile0 = fil_node_create(
logfilename, (ulint) srv_log_file_size,
SRV_LOG_SPACE_FIRST_ID, FALSE);
ut_a(logfile0);
for (unsigned i = 1; i < srv_n_log_files; i++) {
sprintf(logfilename + dirnamelen, "ib_logfile%u", i);
if (!fil_node_create(
logfilename,
(ulint) srv_log_file_size,
SRV_LOG_SPACE_FIRST_ID, FALSE)) {
ut_error;
}
}
log_group_init(0, srv_n_log_files,
srv_log_file_size * UNIV_PAGE_SIZE,
SRV_LOG_SPACE_FIRST_ID,
SRV_LOG_SPACE_FIRST_ID + 1);
fil_open_log_and_system_tablespace_files();
/* Create a log checkpoint. */
mutex_enter(&log_sys->mutex);
ut_d(recv_no_log_write = FALSE);
recv_reset_logs(lsn);
mutex_exit(&log_sys->mutex);
return(DB_SUCCESS);
}
/*********************************************************************//**
Renames the first log file. */
static
void
create_log_files_rename(
/*====================*/
char* logfilename, /*!< in/out: buffer for log file name */
size_t dirnamelen, /*!< in: length of the directory path */
lsn_t lsn, /*!< in: FIL_PAGE_FILE_FLUSH_LSN value */
char* logfile0) /*!< in/out: name of the first log file */
{
/* If innodb_flush_method=O_DSYNC,
we need to explicitly flush the log buffers. */
fil_flush(SRV_LOG_SPACE_FIRST_ID);
/* Close the log files, so that we can rename
the first one. */
fil_close_log_files(false);
/* Rename the first log file, now that a log
checkpoint has been created. */
sprintf(logfilename + dirnamelen, "ib_logfile%u", 0);
RECOVERY_CRASH(9);
ib_logf(IB_LOG_LEVEL_INFO,
"Renaming log file %s to %s", logfile0, logfilename);
mutex_enter(&log_sys->mutex);
ut_ad(strlen(logfile0) == 2 + strlen(logfilename));
ibool success = os_file_rename(
innodb_file_log_key, logfile0, logfilename);
ut_a(success);
RECOVERY_CRASH(10);
/* Replace the first file with ib_logfile0. */
strcpy(logfile0, logfilename);
mutex_exit(&log_sys->mutex);
fil_open_log_and_system_tablespace_files();
ib_logf(IB_LOG_LEVEL_WARN, "New log files created, LSN=" LSN_PF, lsn);
}
/*********************************************************************//**
Opens a log file.
@return DB_SUCCESS or error code */
static __attribute__((nonnull, warn_unused_result))
dberr_t
open_log_file(
/*==========*/
os_file_t* file, /*!< out: file handle */
const char* name, /*!< in: log file name */
os_offset_t* size) /*!< out: file size */
{
ibool ret;
*file = os_file_create(innodb_file_log_key, name,
OS_FILE_OPEN, OS_FILE_AIO,
OS_LOG_FILE, &ret);
if (!ret) {
ib_logf(IB_LOG_LEVEL_ERROR, "Unable to open '%s'", name);
return(DB_ERROR);
}
*size = os_file_get_size(*file);
ret = os_file_close(*file);
ut_a(ret);
return(DB_SUCCESS);
}
/*********************************************************************//**
Creates or opens database data files and closes them.
@return DB_SUCCESS or error code */
static __attribute__((nonnull, warn_unused_result))
dberr_t
open_or_create_data_files(
/*======================*/
ibool* create_new_db, /*!< out: TRUE if new database should be
created */
#ifdef UNIV_LOG_ARCHIVE
ulint* min_arch_log_no,/*!< out: min of archived log
numbers in data files */
ulint* max_arch_log_no,/*!< out: max of archived log
numbers in data files */
#endif /* UNIV_LOG_ARCHIVE */
lsn_t* min_flushed_lsn,/*!< out: min of flushed lsn
values in data files */
lsn_t* max_flushed_lsn,/*!< out: max of flushed lsn
values in data files */
ulint* sum_of_new_sizes)/*!< out: sum of sizes of the
new files added */
{
ibool ret;
ulint i;
ibool one_opened = FALSE;
ibool one_created = FALSE;
os_offset_t size;
ulint flags;
ulint space;
ulint rounded_size_pages;
char name[10000];
if (srv_n_data_files >= 1000) {
ib_logf(IB_LOG_LEVEL_ERROR,
"Can only have < 1000 data files, you have "
"defined %lu", (ulong) srv_n_data_files);
return(DB_ERROR);
}
*sum_of_new_sizes = 0;
*create_new_db = FALSE;
srv_normalize_path_for_win(srv_data_home);
for (i = 0; i < srv_n_data_files; i++) {
ulint dirnamelen;
srv_normalize_path_for_win(srv_data_file_names[i]);
dirnamelen = strlen(srv_data_home);
ut_a(dirnamelen + strlen(srv_data_file_names[i])
< (sizeof name) - 1);
memcpy(name, srv_data_home, dirnamelen);
/* Add a path separator if needed. */
if (dirnamelen && name[dirnamelen - 1] != SRV_PATH_SEPARATOR) {
name[dirnamelen++] = SRV_PATH_SEPARATOR;
}
strcpy(name + dirnamelen, srv_data_file_names[i]);
/* Note: It will return true if the file doesn' exist. */
if (!srv_file_check_mode(name)) {
return(DB_FAIL);
} else if (srv_data_file_is_raw_partition[i] == 0) {
/* First we try to create the file: if it already
exists, ret will get value FALSE */
files[i] = os_file_create(
innodb_file_data_key, name, OS_FILE_CREATE,
OS_FILE_NORMAL, OS_DATA_FILE, &ret);
if (srv_read_only_mode) {
if (ret) {
goto size_check;
}
ib_logf(IB_LOG_LEVEL_ERROR,
"Opening %s failed!", name);
return(DB_ERROR);
} else if (!ret
&& os_file_get_last_error(false)
!= OS_FILE_ALREADY_EXISTS
#ifdef UNIV_AIX
/* AIX 5.1 after security patch ML7 may have
errno set to 0 here, which causes our
function to return 100; work around that
AIX problem */
&& os_file_get_last_error(false) != 100
#endif /* UNIV_AIX */
) {
ib_logf(IB_LOG_LEVEL_ERROR,
"Creating or opening %s failed!",
name);
return(DB_ERROR);
}
} else if (srv_data_file_is_raw_partition[i] == SRV_NEW_RAW) {
ut_a(!srv_read_only_mode);
/* The partition is opened, not created; then it is
written over */
srv_start_raw_disk_in_use = TRUE;
srv_created_new_raw = TRUE;
files[i] = os_file_create(
innodb_file_data_key, name, OS_FILE_OPEN_RAW,
OS_FILE_NORMAL, OS_DATA_FILE, &ret);
if (!ret) {
ib_logf(IB_LOG_LEVEL_ERROR,
"Error in opening %s", name);
return(DB_ERROR);
}
} else if (srv_data_file_is_raw_partition[i] == SRV_OLD_RAW) {
srv_start_raw_disk_in_use = TRUE;
ret = FALSE;
} else {
ut_a(0);
}
if (ret == FALSE) {
const char* check_msg;
/* We open the data file */
if (one_created) {
ib_logf(IB_LOG_LEVEL_ERROR,
"Data files can only be added at "
"the end of a tablespace, but "
"data file %s existed beforehand.",
name);
return(DB_ERROR);
}
if (srv_data_file_is_raw_partition[i] == SRV_OLD_RAW) {
ut_a(!srv_read_only_mode);
files[i] = os_file_create(
innodb_file_data_key,
name, OS_FILE_OPEN_RAW,
OS_FILE_NORMAL, OS_DATA_FILE, &ret);
} else if (i == 0) {
files[i] = os_file_create(
innodb_file_data_key,
name, OS_FILE_OPEN_RETRY,
OS_FILE_NORMAL, OS_DATA_FILE, &ret);
} else {
files[i] = os_file_create(
innodb_file_data_key,
name, OS_FILE_OPEN, OS_FILE_NORMAL,
OS_DATA_FILE, &ret);
}
if (!ret) {
os_file_get_last_error(true);
ib_logf(IB_LOG_LEVEL_ERROR,
"Can't open '%s'", name);
return(DB_ERROR);
}
if (srv_data_file_is_raw_partition[i] == SRV_OLD_RAW) {
goto skip_size_check;
}
size_check:
size = os_file_get_size(files[i]);
ut_a(size != (os_offset_t) -1);
/* Round size downward to megabytes */
rounded_size_pages = (ulint)
(size >> UNIV_PAGE_SIZE_SHIFT);
if (i == srv_n_data_files - 1
&& srv_auto_extend_last_data_file) {
if (srv_data_file_sizes[i] > rounded_size_pages
|| (srv_last_file_size_max > 0
&& srv_last_file_size_max
< rounded_size_pages)) {
ib_logf(IB_LOG_LEVEL_ERROR,
"auto-extending "
"data file %s is "
"of a different size "
"%lu pages (rounded "
"down to MB) than specified "
"in the .cnf file: "
"initial %lu pages, "
"max %lu (relevant if "
"non-zero) pages!",
name,
(ulong) rounded_size_pages,
(ulong) srv_data_file_sizes[i],
(ulong)
srv_last_file_size_max);
return(DB_ERROR);
}
srv_data_file_sizes[i] = rounded_size_pages;
}
if (rounded_size_pages != srv_data_file_sizes[i]) {
ib_logf(IB_LOG_LEVEL_ERROR,
"Data file %s is of a different "
"size %lu pages (rounded down to MB) "
"than specified in the .cnf file "
"%lu pages!",
name,
(ulong) rounded_size_pages,
(ulong) srv_data_file_sizes[i]);
return(DB_ERROR);
}
skip_size_check:
/* This is the earliest location where we can load
the double write buffer. */
if (i == 0) {
buf_dblwr_init_or_load_pages(
files[i], srv_data_file_names[i], true);
}
bool retry = true;
check_first_page:
check_msg = fil_read_first_page(
files[i], one_opened, &flags, &space,
#ifdef UNIV_LOG_ARCHIVE
min_arch_log_no, max_arch_log_no,
#endif /* UNIV_LOG_ARCHIVE */
min_flushed_lsn, max_flushed_lsn);
if (check_msg) {
if (retry) {
fsp_open_info fsp;
const ulint page_no = 0;
retry = false;
fsp.id = 0;
fsp.filepath = srv_data_file_names[i];
fsp.file = files[i];
if (fil_user_tablespace_restore_page(
&fsp, page_no)) {
goto check_first_page;
}
}
ib_logf(IB_LOG_LEVEL_ERROR,
"%s in data file %s",
check_msg, name);
return(DB_ERROR);
}
/* The first file of the system tablespace must
have space ID = TRX_SYS_SPACE. The FSP_SPACE_ID
field in files greater than ibdata1 are unreliable. */
ut_a(one_opened || space == TRX_SYS_SPACE);
/* Check the flags for the first system tablespace
file only. */
if (!one_opened
&& UNIV_PAGE_SIZE
!= fsp_flags_get_page_size(flags)) {
ib_logf(IB_LOG_LEVEL_ERROR,
"Data file \"%s\" uses page size %lu,"
"but the start-up parameter "
"is --innodb-page-size=%lu",
name,
fsp_flags_get_page_size(flags),
UNIV_PAGE_SIZE);
return(DB_ERROR);
}
one_opened = TRUE;
} else if (!srv_read_only_mode) {
/* We created the data file and now write it full of
zeros */
one_created = TRUE;
if (i > 0) {
ib_logf(IB_LOG_LEVEL_INFO,
"Data file %s did not"
" exist: new to be created",
name);
} else {
ib_logf(IB_LOG_LEVEL_INFO,
"The first specified "
"data file %s did not exist: "
"a new database to be created!",
name);
*create_new_db = TRUE;
}
ib_logf(IB_LOG_LEVEL_INFO,
"Setting file %s size to %lu MB",
name,
(ulong) (srv_data_file_sizes[i]
>> (20 - UNIV_PAGE_SIZE_SHIFT)));
ib_logf(IB_LOG_LEVEL_INFO,
"Database physically writes the"
" file full: wait...");
ret = os_file_set_size(
name, files[i],
(os_offset_t) srv_data_file_sizes[i]
<< UNIV_PAGE_SIZE_SHIFT);
if (!ret) {
ib_logf(IB_LOG_LEVEL_ERROR,
"Error in creating %s: "
"probably out of disk space",
name);
return(DB_ERROR);
}
*sum_of_new_sizes += srv_data_file_sizes[i];
}
ret = os_file_close(files[i]);
ut_a(ret);
if (i == 0) {
flags = fsp_flags_set_page_size(0, UNIV_PAGE_SIZE);
fil_space_create(name, 0, flags, FIL_TABLESPACE);
}
ut_a(fil_validate());
if (!fil_node_create(name, srv_data_file_sizes[i], 0,
srv_data_file_is_raw_partition[i] != 0)) {
return(DB_ERROR);
}
}
return(DB_SUCCESS);
}
/*********************************************************************//**
Create undo tablespace.
@return DB_SUCCESS or error code */
static
dberr_t
srv_undo_tablespace_create(
/*=======================*/
const char* name, /*!< in: tablespace name */
ulint size) /*!< in: tablespace size in pages */
{
os_file_t fh;
ibool ret;
dberr_t err = DB_SUCCESS;
os_file_create_subdirs_if_needed(name);
fh = os_file_create(
innodb_file_data_key,
name,
srv_read_only_mode ? OS_FILE_OPEN : OS_FILE_CREATE,
OS_FILE_NORMAL, OS_DATA_FILE, &ret);
if (srv_read_only_mode && ret) {
ib_logf(IB_LOG_LEVEL_INFO,
"%s opened in read-only mode", name);
} else if (ret == FALSE) {
if (os_file_get_last_error(false) != OS_FILE_ALREADY_EXISTS
#ifdef UNIV_AIX
/* AIX 5.1 after security patch ML7 may have
errno set to 0 here, which causes our function
to return 100; work around that AIX problem */
&& os_file_get_last_error(false) != 100
#endif /* UNIV_AIX */
) {
ib_logf(IB_LOG_LEVEL_ERROR,
"Can't create UNDO tablespace %s", name);
} else {
ib_logf(IB_LOG_LEVEL_ERROR,
"Creating system tablespace with"
" existing undo tablespaces is not"
" supported. Please delete all undo"
" tablespaces before creating new"
" system tablespace.");
}
err = DB_ERROR;
} else {
ut_a(!srv_read_only_mode);
/* We created the data file and now write it full of zeros */
ib_logf(IB_LOG_LEVEL_INFO,
"Data file %s did not exist: new to be created",
name);
ib_logf(IB_LOG_LEVEL_INFO,
"Setting file %s size to %lu MB",
name, size >> (20 - UNIV_PAGE_SIZE_SHIFT));
ib_logf(IB_LOG_LEVEL_INFO,
"Database physically writes the file full: wait...");
ret = os_file_set_size(name, fh, size << UNIV_PAGE_SIZE_SHIFT);
if (!ret) {
ib_logf(IB_LOG_LEVEL_INFO,
"Error in creating %s: probably out of "
"disk space", name);
err = DB_ERROR;
}
os_file_close(fh);
}
return(err);
}
/*********************************************************************//**
Open an undo tablespace.
@return DB_SUCCESS or error code */
static
dberr_t
srv_undo_tablespace_open(
/*=====================*/
const char* name, /*!< in: tablespace name */
ulint space) /*!< in: tablespace id */
{
os_file_t fh;
dberr_t err = DB_ERROR;
ibool ret;
ulint flags;
if (!srv_file_check_mode(name)) {
ib_logf(IB_LOG_LEVEL_ERROR,
"UNDO tablespaces must be %s!",
srv_read_only_mode ? "writable" : "readable");
return(DB_ERROR);
}
fh = os_file_create(
innodb_file_data_key, name,
OS_FILE_OPEN_RETRY
| OS_FILE_ON_ERROR_NO_EXIT
| OS_FILE_ON_ERROR_SILENT,
OS_FILE_NORMAL,
OS_DATA_FILE,
&ret);
/* If the file open was successful then load the tablespace. */
if (ret) {
os_offset_t size;
size = os_file_get_size(fh);
ut_a(size != (os_offset_t) -1);
ret = os_file_close(fh);
ut_a(ret);
/* Load the tablespace into InnoDB's internal
data structures. */
/* We set the biggest space id to the undo tablespace
because InnoDB hasn't opened any other tablespace apart
from the system tablespace. */
fil_set_max_space_id_if_bigger(space);
/* Set the compressed page size to 0 (non-compressed) */
flags = fsp_flags_set_page_size(0, UNIV_PAGE_SIZE);
fil_space_create(name, space, flags, FIL_TABLESPACE);
ut_a(fil_validate());
os_offset_t n_pages = size / UNIV_PAGE_SIZE;
/* On 64 bit Windows ulint can be 32 bit and os_offset_t
is 64 bit. It is OK to cast the n_pages to ulint because
the unit has been scaled to pages and they are always
32 bit. */
if (fil_node_create(name, (ulint) n_pages, space, FALSE)) {
err = DB_SUCCESS;
}
}
return(err);
}
/********************************************************************
Opens the configured number of undo tablespaces.
@return DB_SUCCESS or error code */
static
dberr_t
srv_undo_tablespaces_init(
/*======================*/
ibool create_new_db, /*!< in: TRUE if new db being
created */
const ulint n_conf_tablespaces, /*!< in: configured undo
tablespaces */
ulint* n_opened) /*!< out: number of UNDO
tablespaces successfully
discovered and opened */
{
ulint i;
dberr_t err = DB_SUCCESS;
ulint prev_space_id = 0;
ulint n_undo_tablespaces;
ulint undo_tablespace_ids[TRX_SYS_N_RSEGS + 1];
*n_opened = 0;
ut_a(n_conf_tablespaces <= TRX_SYS_N_RSEGS);
memset(undo_tablespace_ids, 0x0, sizeof(undo_tablespace_ids));
/* Create the undo spaces only if we are creating a new
instance. We don't allow creating of new undo tablespaces
in an existing instance (yet). This restriction exists because
we check in several places for SYSTEM tablespaces to be less than
the min of user defined tablespace ids. Once we implement saving
the location of the undo tablespaces and their space ids this
restriction will/should be lifted. */
for (i = 0; create_new_db && i < n_conf_tablespaces; ++i) {
char name[OS_FILE_MAX_PATH];
ut_snprintf(
name, sizeof(name),
"%s%cundo%03lu",
srv_undo_dir, SRV_PATH_SEPARATOR, i + 1);
/* Undo space ids start from 1. */
err = srv_undo_tablespace_create(
name, SRV_UNDO_TABLESPACE_SIZE_IN_PAGES);
if (err != DB_SUCCESS) {
ib_logf(IB_LOG_LEVEL_ERROR,
"Could not create undo tablespace '%s'.",
name);
return(err);
}
}
/* Get the tablespace ids of all the undo segments excluding
the system tablespace (0). If we are creating a new instance then
we build the undo_tablespace_ids ourselves since they don't
already exist. */
if (!create_new_db) {
n_undo_tablespaces = trx_rseg_get_n_undo_tablespaces(
undo_tablespace_ids);
} else {
n_undo_tablespaces = n_conf_tablespaces;
for (i = 1; i <= n_undo_tablespaces; ++i) {
undo_tablespace_ids[i - 1] = i;
}
undo_tablespace_ids[i] = ULINT_UNDEFINED;
}
/* Open all the undo tablespaces that are currently in use. If we
fail to open any of these it is a fatal error. The tablespace ids
should be contiguous. It is a fatal error because they are required
for recovery and are referenced by the UNDO logs (a.k.a RBS). */
for (i = 0; i < n_undo_tablespaces; ++i) {
char name[OS_FILE_MAX_PATH];
ut_snprintf(
name, sizeof(name),
"%s%cundo%03lu",
srv_undo_dir, SRV_PATH_SEPARATOR,
undo_tablespace_ids[i]);
/* Should be no gaps in undo tablespace ids. */
ut_a(prev_space_id + 1 == undo_tablespace_ids[i]);
/* The system space id should not be in this array. */
ut_a(undo_tablespace_ids[i] != 0);
ut_a(undo_tablespace_ids[i] != ULINT_UNDEFINED);
/* Undo space ids start from 1. */
err = srv_undo_tablespace_open(name, undo_tablespace_ids[i]);
if (err != DB_SUCCESS) {
ib_logf(IB_LOG_LEVEL_ERROR,
"Unable to open undo tablespace '%s'.", name);
return(err);
}
prev_space_id = undo_tablespace_ids[i];
++*n_opened;
}
/* Open any extra unused undo tablespaces. These must be contiguous.
We stop at the first failure. These are undo tablespaces that are
not in use and therefore not required by recovery. We only check
that there are no gaps. */
for (i = prev_space_id + 1; i < TRX_SYS_N_RSEGS; ++i) {
char name[OS_FILE_MAX_PATH];
ut_snprintf(
name, sizeof(name),
"%s%cundo%03lu", srv_undo_dir, SRV_PATH_SEPARATOR, i);
/* Undo space ids start from 1. */
err = srv_undo_tablespace_open(name, i);
if (err != DB_SUCCESS) {
break;
}
++n_undo_tablespaces;
++*n_opened;
}
/* If the user says that there are fewer than what we find we
tolerate that discrepancy but not the inverse. Because there could
be unused undo tablespaces for future use. */
if (n_conf_tablespaces > n_undo_tablespaces) {
ut_print_timestamp(stderr);
fprintf(stderr,
" InnoDB: Expected to open %lu undo "
"tablespaces but was able\n",
n_conf_tablespaces);
ut_print_timestamp(stderr);
fprintf(stderr,
" InnoDB: to find only %lu undo "
"tablespaces.\n", n_undo_tablespaces);
ut_print_timestamp(stderr);
fprintf(stderr,
" InnoDB: Set the "
"innodb_undo_tablespaces parameter to "
"the\n");
ut_print_timestamp(stderr);
fprintf(stderr,
" InnoDB: correct value and retry. Suggested "
"value is %lu\n", n_undo_tablespaces);
return(err != DB_SUCCESS ? err : DB_ERROR);
} else if (n_undo_tablespaces > 0) {
ib_logf(IB_LOG_LEVEL_INFO, "Opened %lu undo tablespaces",
n_undo_tablespaces);
if (n_conf_tablespaces == 0) {
ib_logf(IB_LOG_LEVEL_WARN,
"Using the system tablespace for all UNDO "
"logging because innodb_undo_tablespaces=0");
}
}
if (create_new_db) {
mtr_t mtr;
mtr_start(&mtr);
/* The undo log tablespace */
for (i = 1; i <= n_undo_tablespaces; ++i) {
fsp_header_init(
i, SRV_UNDO_TABLESPACE_SIZE_IN_PAGES, &mtr);
}
mtr_commit(&mtr);
}
return(DB_SUCCESS);
}
/********************************************************************
Wait for the purge thread(s) to start up. */
static
void
srv_start_wait_for_purge_to_start()
/*===============================*/
{
/* Wait for the purge coordinator and master thread to startup. */
purge_state_t state = trx_purge_state();
ut_a(state != PURGE_STATE_DISABLED);
while (srv_shutdown_state == SRV_SHUTDOWN_NONE
&& srv_force_recovery < SRV_FORCE_NO_BACKGROUND
&& state == PURGE_STATE_INIT) {
switch (state = trx_purge_state()) {
case PURGE_STATE_RUN:
case PURGE_STATE_STOP:
break;
case PURGE_STATE_INIT:
ib_logf(IB_LOG_LEVEL_INFO,
"Waiting for purge to start");
os_thread_sleep(50000);
break;
case PURGE_STATE_EXIT:
case PURGE_STATE_DISABLED:
ut_error;
}
}
}
/********************************************************************
Starts InnoDB and creates a new database if database files
are not found and the user wants.
@return DB_SUCCESS or error code */
UNIV_INTERN
dberr_t
innobase_start_or_create_for_mysql(void)
/*====================================*/
{
ibool create_new_db;
lsn_t min_flushed_lsn;
lsn_t max_flushed_lsn;
#ifdef UNIV_LOG_ARCHIVE
ulint min_arch_log_no;
ulint max_arch_log_no;
#endif /* UNIV_LOG_ARCHIVE */
ulint sum_of_new_sizes;
ulint sum_of_data_file_sizes;
ulint tablespace_size_in_header;
dberr_t err;
unsigned i;
ulint srv_n_log_files_found = srv_n_log_files;
ulint io_limit;
mtr_t mtr;
ib_bh_t* ib_bh;
ulint n_recovered_trx;
char logfilename[10000];
char* logfile0 = NULL;
size_t dirnamelen;
if (srv_force_recovery > SRV_FORCE_NO_TRX_UNDO) {
srv_read_only_mode = true;
}
if (srv_read_only_mode) {
ib_logf(IB_LOG_LEVEL_INFO, "Started in read only mode");
}
#ifdef HAVE_DARWIN_THREADS
# ifdef F_FULLFSYNC
/* This executable has been compiled on Mac OS X 10.3 or later.
Assume that F_FULLFSYNC is available at run-time. */
srv_have_fullfsync = TRUE;
# else /* F_FULLFSYNC */
/* This executable has been compiled on Mac OS X 10.2
or earlier. Determine if the executable is running
on Mac OS X 10.3 or later. */
struct utsname utsname;
if (uname(&utsname)) {
ut_print_timestamp(stderr);
fputs(" InnoDB: cannot determine Mac OS X version!\n", stderr);
} else {
srv_have_fullfsync = strcmp(utsname.release, "7.") >= 0;
}
if (!srv_have_fullfsync) {
ut_print_timestamp(stderr);
fputs(" InnoDB: On Mac OS X, fsync() may be "
"broken on internal drives,\n", stderr);
ut_print_timestamp(stderr);
fputs(" InnoDB: making transactions unsafe!\n", stderr);
}
# endif /* F_FULLFSYNC */
#endif /* HAVE_DARWIN_THREADS */
ib_logf(IB_LOG_LEVEL_INFO,
"Using %s to ref count buffer pool pages",
#ifdef PAGE_ATOMIC_REF_COUNT
"atomics"
#else
"mutexes"
#endif /* PAGE_ATOMIC_REF_COUNT */
);
if (sizeof(ulint) != sizeof(void*)) {
ut_print_timestamp(stderr);
fprintf(stderr,
" InnoDB: Error: size of InnoDB's ulint is %lu, "
"but size of void*\n", (ulong) sizeof(ulint));
ut_print_timestamp(stderr);
fprintf(stderr,
" InnoDB: is %lu. The sizes should be the same "
"so that on a 64-bit\n",
(ulong) sizeof(void*));
ut_print_timestamp(stderr);
fprintf(stderr,
" InnoDB: platforms you can allocate more than 4 GB "
"of memory.\n");
}
#ifdef UNIV_DEBUG
ut_print_timestamp(stderr);
fprintf(stderr,
" InnoDB: !!!!!!!! UNIV_DEBUG switched on !!!!!!!!!\n");
#endif
#ifdef UNIV_IBUF_DEBUG
ut_print_timestamp(stderr);
fprintf(stderr,
" InnoDB: !!!!!!!! UNIV_IBUF_DEBUG switched on !!!!!!!!!\n");
# ifdef UNIV_IBUF_COUNT_DEBUG
ut_print_timestamp(stderr);
fprintf(stderr,
" InnoDB: !!!!!!!! UNIV_IBUF_COUNT_DEBUG switched on "
"!!!!!!!!!\n");
ut_print_timestamp(stderr);
fprintf(stderr,
" InnoDB: Crash recovery will fail with UNIV_IBUF_COUNT_DEBUG\n");
# endif
#endif
#ifdef UNIV_BLOB_DEBUG
fprintf(stderr,
"InnoDB: !!!!!!!! UNIV_BLOB_DEBUG switched on !!!!!!!!!\n"
"InnoDB: Server restart may fail with UNIV_BLOB_DEBUG\n");
#endif /* UNIV_BLOB_DEBUG */
#ifdef UNIV_SYNC_DEBUG
ut_print_timestamp(stderr);
fprintf(stderr,
" InnoDB: !!!!!!!! UNIV_SYNC_DEBUG switched on !!!!!!!!!\n");
#endif
#ifdef UNIV_SEARCH_DEBUG
ut_print_timestamp(stderr);
fprintf(stderr,
" InnoDB: !!!!!!!! UNIV_SEARCH_DEBUG switched on !!!!!!!!!\n");
#endif
#ifdef UNIV_LOG_LSN_DEBUG
ut_print_timestamp(stderr);
fprintf(stderr,
" InnoDB: !!!!!!!! UNIV_LOG_LSN_DEBUG switched on !!!!!!!!!\n");
#endif /* UNIV_LOG_LSN_DEBUG */
#ifdef UNIV_MEM_DEBUG
ut_print_timestamp(stderr);
fprintf(stderr,
" InnoDB: !!!!!!!! UNIV_MEM_DEBUG switched on !!!!!!!!!\n");
#endif
if (srv_use_sys_malloc) {
ib_logf(IB_LOG_LEVEL_INFO,
"The InnoDB memory heap is disabled");
}
#if defined(COMPILER_HINTS_ENABLED)
ib_logf(IB_LOG_LEVEL_INFO,
" InnoDB: Compiler hints enabled.");
#endif /* defined(COMPILER_HINTS_ENABLED) */
ib_logf(IB_LOG_LEVEL_INFO,
"" IB_ATOMICS_STARTUP_MSG "");
ib_logf(IB_LOG_LEVEL_INFO,
"Compressed tables use zlib " ZLIB_VERSION
#ifdef UNIV_ZIP_DEBUG
" with validation"
#endif /* UNIV_ZIP_DEBUG */
);
#ifdef UNIV_ZIP_COPY
ib_logf(IB_LOG_LEVEL_INFO, "and extra copying");
#endif /* UNIV_ZIP_COPY */
/* Since InnoDB does not currently clean up all its internal data
structures in MySQL Embedded Server Library server_end(), we
print an error message if someone tries to start up InnoDB a
second time during the process lifetime. */
if (srv_start_has_been_called) {
ut_print_timestamp(stderr);
fprintf(stderr, " InnoDB: Error: startup called second time "
"during the process\n");
ut_print_timestamp(stderr);
fprintf(stderr, " InnoDB: lifetime. In the MySQL Embedded "
"Server Library you\n");
ut_print_timestamp(stderr);
fprintf(stderr, " InnoDB: cannot call server_init() more "
"than once during the\n");
ut_print_timestamp(stderr);
fprintf(stderr, " InnoDB: process lifetime.\n");
}
srv_start_has_been_called = TRUE;
#ifdef UNIV_DEBUG
log_do_write = TRUE;
#endif /* UNIV_DEBUG */
/* yydebug = TRUE; */
srv_is_being_started = TRUE;
srv_startup_is_before_trx_rollback_phase = TRUE;
#ifdef __WIN__
switch (os_get_os_version()) {
case OS_WIN95:
case OS_WIN31:
case OS_WINNT:
/* On Win 95, 98, ME, Win32 subsystem for Windows 3.1,
and NT use simulated aio. In NT Windows provides async i/o,
but when run in conjunction with InnoDB Hot Backup, it seemed
to corrupt the data files. */
srv_use_native_aio = FALSE;
break;
case OS_WIN2000:
case OS_WINXP:
/* On 2000 and XP, async IO is available. */
srv_use_native_aio = TRUE;
break;
default:
/* Vista and later have both async IO and condition variables */
srv_use_native_aio = TRUE;
srv_use_native_conditions = TRUE;
break;
}
#elif defined(LINUX_NATIVE_AIO)
if (srv_use_native_aio) {
ib_logf(IB_LOG_LEVEL_INFO, "Using Linux native AIO");
}
#else
/* Currently native AIO is supported only on windows and linux
and that also when the support is compiled in. In all other
cases, we ignore the setting of innodb_use_native_aio. */
srv_use_native_aio = FALSE;
#endif /* __WIN__ */
if (srv_file_flush_method_str == NULL) {
/* These are the default options */
srv_unix_file_flush_method = SRV_UNIX_FSYNC;
srv_win_file_flush_method = SRV_WIN_IO_UNBUFFERED;
#ifndef __WIN__
} else if (0 == ut_strcmp(srv_file_flush_method_str, "fsync")) {
srv_unix_file_flush_method = SRV_UNIX_FSYNC;
} else if (0 == ut_strcmp(srv_file_flush_method_str, "O_DSYNC")) {
srv_unix_file_flush_method = SRV_UNIX_O_DSYNC;
} else if (0 == ut_strcmp(srv_file_flush_method_str, "O_DIRECT")) {
srv_unix_file_flush_method = SRV_UNIX_O_DIRECT;
} else if (0 == ut_strcmp(srv_file_flush_method_str, "O_DIRECT_NO_FSYNC")) {
srv_unix_file_flush_method = SRV_UNIX_O_DIRECT_NO_FSYNC;
} else if (0 == ut_strcmp(srv_file_flush_method_str, "littlesync")) {
srv_unix_file_flush_method = SRV_UNIX_LITTLESYNC;
} else if (0 == ut_strcmp(srv_file_flush_method_str, "nosync")) {
srv_unix_file_flush_method = SRV_UNIX_NOSYNC;
#else
} else if (0 == ut_strcmp(srv_file_flush_method_str, "normal")) {
srv_win_file_flush_method = SRV_WIN_IO_NORMAL;
srv_use_native_aio = FALSE;
} else if (0 == ut_strcmp(srv_file_flush_method_str, "unbuffered")) {
srv_win_file_flush_method = SRV_WIN_IO_UNBUFFERED;
srv_use_native_aio = FALSE;
} else if (0 == ut_strcmp(srv_file_flush_method_str,
"async_unbuffered")) {
srv_win_file_flush_method = SRV_WIN_IO_UNBUFFERED;
#endif /* __WIN__ */
} else {
ib_logf(IB_LOG_LEVEL_ERROR,
"Unrecognized value %s for innodb_flush_method",
srv_file_flush_method_str);
return(DB_ERROR);
}
/* Note that the call srv_boot() also changes the values of
some variables to the units used by InnoDB internally */
/* Set the maximum number of threads which can wait for a semaphore
inside InnoDB: this is the 'sync wait array' size, as well as the
maximum number of threads that can wait in the 'srv_conc array' for
their time to enter InnoDB. */
#define BUF_POOL_SIZE_THRESHOLD (1024 * 1024 * 1024)
srv_max_n_threads = 1 /* io_ibuf_thread */
+ 1 /* io_log_thread */
+ 1 /* lock_wait_timeout_thread */
+ 1 /* srv_error_monitor_thread */
+ 1 /* srv_monitor_thread */
+ 1 /* srv_master_thread */
+ 1 /* srv_purge_coordinator_thread */
+ 1 /* buf_dump_thread */
+ 1 /* dict_stats_thread */
+ 1 /* fts_optimize_thread */
+ 1 /* recv_writer_thread */
+ 1 /* buf_flush_page_cleaner_thread */
+ 1 /* trx_rollback_or_clean_all_recovered */
+ 128 /* added as margin, for use of
InnoDB Memcached etc. */
+ max_connections
+ srv_n_read_io_threads
+ srv_n_write_io_threads
+ srv_n_purge_threads
/* FTS Parallel Sort */
+ fts_sort_pll_degree * FTS_NUM_AUX_INDEX
* max_connections;
if (srv_buf_pool_size < BUF_POOL_SIZE_THRESHOLD) {
/* If buffer pool is less than 1 GB,
use only one buffer pool instance */
srv_buf_pool_instances = 1;
}
srv_boot();
ib_logf(IB_LOG_LEVEL_INFO,
"%s CPU crc32 instructions",
ut_crc32_sse2_enabled ? "Using" : "Not using");
if (!srv_read_only_mode) {
mutex_create(srv_monitor_file_mutex_key,
&srv_monitor_file_mutex, SYNC_NO_ORDER_CHECK);
if (srv_innodb_status) {
srv_monitor_file_name = static_cast<char*>(
mem_alloc(
strlen(fil_path_to_mysql_datadir)
+ 20 + sizeof "/innodb_status."));
sprintf(srv_monitor_file_name, "%s/innodb_status.%lu",
fil_path_to_mysql_datadir,
os_proc_get_number());
srv_monitor_file = fopen(srv_monitor_file_name, "w+");
if (!srv_monitor_file) {
ib_logf(IB_LOG_LEVEL_ERROR,
"Unable to create %s: %s",
srv_monitor_file_name,
strerror(errno));
return(DB_ERROR);
}
} else {
srv_monitor_file_name = NULL;
srv_monitor_file = os_file_create_tmpfile();
if (!srv_monitor_file) {
return(DB_ERROR);
}
}
mutex_create(srv_dict_tmpfile_mutex_key,
&srv_dict_tmpfile_mutex, SYNC_DICT_OPERATION);
srv_dict_tmpfile = os_file_create_tmpfile();
if (!srv_dict_tmpfile) {
return(DB_ERROR);
}
mutex_create(srv_misc_tmpfile_mutex_key,
&srv_misc_tmpfile_mutex, SYNC_ANY_LATCH);
srv_misc_tmpfile = os_file_create_tmpfile();
if (!srv_misc_tmpfile) {
return(DB_ERROR);
}
}
/* If user has set the value of innodb_file_io_threads then
we'll emit a message telling the user that this parameter
is now deprecated. */
if (srv_n_file_io_threads != 4) {
ib_logf(IB_LOG_LEVEL_WARN,
"innodb_file_io_threads is deprecated. Please use "
"innodb_read_io_threads and innodb_write_io_threads "
"instead");
}
/* Now overwrite the value on srv_n_file_io_threads */
srv_n_file_io_threads = srv_n_read_io_threads;
if (!srv_read_only_mode) {
/* Add the log and ibuf IO threads. */
srv_n_file_io_threads += 2;
srv_n_file_io_threads += srv_n_write_io_threads;
} else {
ib_logf(IB_LOG_LEVEL_INFO,
"Disabling background IO write threads.");
srv_n_write_io_threads = 0;
}
ut_a(srv_n_file_io_threads <= SRV_MAX_N_IO_THREADS);
io_limit = 8 * SRV_N_PENDING_IOS_PER_THREAD;
/* On Windows when using native aio the number of aio requests
that a thread can handle at a given time is limited to 32
i.e.: SRV_N_PENDING_IOS_PER_THREAD */
# ifdef __WIN__
if (srv_use_native_aio) {
io_limit = SRV_N_PENDING_IOS_PER_THREAD;
}
# endif /* __WIN__ */
if (!os_aio_init(io_limit,
srv_n_read_io_threads,
srv_n_write_io_threads,
SRV_MAX_N_PENDING_SYNC_IOS)) {
ib_logf(IB_LOG_LEVEL_ERROR,
"Fatal : Cannot initialize AIO sub-system");
return(DB_ERROR);
}
fil_init(srv_file_per_table ? 50000 : 5000, srv_max_n_open_files);
double size;
char unit;
if (srv_buf_pool_size >= 1024 * 1024 * 1024) {
size = ((double) srv_buf_pool_size) / (1024 * 1024 * 1024);
unit = 'G';
} else {
size = ((double) srv_buf_pool_size) / (1024 * 1024);
unit = 'M';
}
/* Print time to initialize the buffer pool */
ib_logf(IB_LOG_LEVEL_INFO,
"Initializing buffer pool, size = %.1f%c", size, unit);
err = buf_pool_init(srv_buf_pool_size, srv_buf_pool_instances);
if (err != DB_SUCCESS) {
ib_logf(IB_LOG_LEVEL_ERROR,
"Cannot allocate memory for the buffer pool");
return(DB_ERROR);
}
ib_logf(IB_LOG_LEVEL_INFO,
"Completed initialization of buffer pool");
#ifdef UNIV_DEBUG
/* We have observed deadlocks with a 5MB buffer pool but
the actual lower limit could very well be a little higher. */
if (srv_buf_pool_size <= 5 * 1024 * 1024) {
ib_logf(IB_LOG_LEVEL_INFO,
"Small buffer pool size (%luM), the flst_validate() "
"debug function can cause a deadlock if the "
"buffer pool fills up.",
srv_buf_pool_size / 1024 / 1024);
}
#endif /* UNIV_DEBUG */
fsp_init();
log_init();
lock_sys_create(srv_lock_table_size);
/* Create i/o-handler threads: */
for (i = 0; i < srv_n_file_io_threads; ++i) {
n[i] = i;
os_thread_create(io_handler_thread, n + i, thread_ids + i);
}
#ifdef UNIV_LOG_ARCHIVE
if (0 != ut_strcmp(srv_log_group_home_dir, srv_arch_dir)) {
ut_print_timestamp(stderr);
fprintf(stderr, " InnoDB: Error: you must set the log group home dir in my.cnf\n");
ut_print_timestamp(stderr);
fprintf(stderr, " InnoDB: the same as log arch dir.\n");
return(DB_ERROR);
}
#endif /* UNIV_LOG_ARCHIVE */
if (srv_n_log_files * srv_log_file_size * UNIV_PAGE_SIZE
>= 512ULL * 1024ULL * 1024ULL * 1024ULL) {
/* log_block_convert_lsn_to_no() limits the returned block
number to 1G and given that OS_FILE_LOG_BLOCK_SIZE is 512
bytes, then we have a limit of 512 GB. If that limit is to
be raised, then log_block_convert_lsn_to_no() must be
modified. */
ib_logf(IB_LOG_LEVEL_ERROR,
"Combined size of log files must be < 512 GB");
return(DB_ERROR);
}
if (srv_n_log_files * srv_log_file_size >= ULINT_MAX) {
/* fil_io() takes ulint as an argument and we are passing
(next_offset / UNIV_PAGE_SIZE) to it in log_group_write_buf().
So (next_offset / UNIV_PAGE_SIZE) must be less than ULINT_MAX.
So next_offset must be < ULINT_MAX * UNIV_PAGE_SIZE. This
means that we are limited to ULINT_MAX * UNIV_PAGE_SIZE which
is 64 TB on 32 bit systems. */
fprintf(stderr,
" InnoDB: Error: combined size of log files"
" must be < %lu GB\n",
ULINT_MAX / 1073741824 * UNIV_PAGE_SIZE);
return(DB_ERROR);
}
sum_of_new_sizes = 0;
for (i = 0; i < srv_n_data_files; i++) {
#ifndef __WIN__
if (sizeof(off_t) < 5
&& srv_data_file_sizes[i]
>= (ulint) (1 << (32 - UNIV_PAGE_SIZE_SHIFT))) {
ut_print_timestamp(stderr);
fprintf(stderr,
" InnoDB: Error: file size must be < 4 GB"
" with this MySQL binary\n");
ut_print_timestamp(stderr);
fprintf(stderr,
" InnoDB: and operating system combination,"
" in some OS's < 2 GB\n");
return(DB_ERROR);
}
#endif
sum_of_new_sizes += srv_data_file_sizes[i];
}
if (sum_of_new_sizes < 10485760 / UNIV_PAGE_SIZE) {
ib_logf(IB_LOG_LEVEL_ERROR,
"Tablespace size must be at least 10 MB");
return(DB_ERROR);
}
recv_sys_create();
recv_sys_init(buf_pool_get_curr_size());
err = open_or_create_data_files(&create_new_db,
#ifdef UNIV_LOG_ARCHIVE
&min_arch_log_no, &max_arch_log_no,
#endif /* UNIV_LOG_ARCHIVE */
&min_flushed_lsn, &max_flushed_lsn,
&sum_of_new_sizes);
if (err == DB_FAIL) {
ib_logf(IB_LOG_LEVEL_ERROR,
"The system tablespace must be writable!");
return(DB_ERROR);
} else if (err != DB_SUCCESS) {
ib_logf(IB_LOG_LEVEL_ERROR,
"Could not open or create the system tablespace. If "
"you tried to add new data files to the system "
"tablespace, and it failed here, you should now "
"edit innodb_data_file_path in my.cnf back to what "
"it was, and remove the new ibdata files InnoDB "
"created in this failed attempt. InnoDB only wrote "
"those files full of zeros, but did not yet use "
"them in any way. But be careful: do not remove "
"old data files which contain your precious data!");
return(err);
}
#ifdef UNIV_LOG_ARCHIVE
srv_normalize_path_for_win(srv_arch_dir);
srv_arch_dir = srv_add_path_separator_if_needed(srv_arch_dir);
#endif /* UNIV_LOG_ARCHIVE */
dirnamelen = strlen(srv_log_group_home_dir);
ut_a(dirnamelen < (sizeof logfilename) - 10 - sizeof "ib_logfile");
memcpy(logfilename, srv_log_group_home_dir, dirnamelen);
/* Add a path separator if needed. */
if (dirnamelen && logfilename[dirnamelen - 1] != SRV_PATH_SEPARATOR) {
logfilename[dirnamelen++] = SRV_PATH_SEPARATOR;
}
srv_log_file_size_requested = srv_log_file_size;
if (create_new_db) {
bool success = buf_flush_list(ULINT_MAX, LSN_MAX, NULL);
ut_a(success);
min_flushed_lsn = max_flushed_lsn = log_get_lsn();
buf_flush_wait_batch_end(NULL, BUF_FLUSH_LIST);
err = create_log_files(create_new_db, logfilename, dirnamelen,
max_flushed_lsn, logfile0);
if (err != DB_SUCCESS) {
return(err);
}
} else {
for (i = 0; i < SRV_N_LOG_FILES_MAX; i++) {
os_offset_t size;
os_file_stat_t stat_info;
sprintf(logfilename + dirnamelen,
"ib_logfile%u", i);
err = os_file_get_status(
logfilename, &stat_info, false);
if (err == DB_NOT_FOUND) {
if (i == 0) {
if (max_flushed_lsn
!= min_flushed_lsn) {
ib_logf(IB_LOG_LEVEL_ERROR,
"Cannot create"
" log files because"
" data files are"
" corrupt or"
" not in sync"
" with each other");
return(DB_ERROR);
}
if (max_flushed_lsn < (lsn_t) 1000) {
ib_logf(IB_LOG_LEVEL_ERROR,
"Cannot create"
" log files because"
" data files are"
" corrupt or the"
" database was not"
" shut down cleanly"
" after creating"
" the data files.");
return(DB_ERROR);
}
err = create_log_files(
create_new_db, logfilename,
dirnamelen, max_flushed_lsn,
logfile0);
if (err != DB_SUCCESS) {
return(err);
}
create_log_files_rename(
logfilename, dirnamelen,
max_flushed_lsn, logfile0);
/* Suppress the message about
crash recovery. */
max_flushed_lsn = min_flushed_lsn
= log_get_lsn();
goto files_checked;
} else if (i < 2) {
/* must have at least 2 log files */
ib_logf(IB_LOG_LEVEL_ERROR,
"Only one log file found.");
return(err);
}
/* opened all files */
break;
}
if (!srv_file_check_mode(logfilename)) {
return(DB_ERROR);
}
err = open_log_file(&files[i], logfilename, &size);
if (err != DB_SUCCESS) {
return(err);
}
ut_a(size != (os_offset_t) -1);
if (size & ((1 << UNIV_PAGE_SIZE_SHIFT) - 1)) {
ib_logf(IB_LOG_LEVEL_ERROR,
"Log file %s size "
UINT64PF " is not a multiple of"
" innodb_page_size",
logfilename, size);
return(DB_ERROR);
}
size >>= UNIV_PAGE_SIZE_SHIFT;
if (i == 0) {
srv_log_file_size = size;
} else if (size != srv_log_file_size) {
ib_logf(IB_LOG_LEVEL_ERROR,
"Log file %s is"
" of different size " UINT64PF " bytes"
" than other log"
" files " UINT64PF " bytes!",
logfilename,
size << UNIV_PAGE_SIZE_SHIFT,
(os_offset_t) srv_log_file_size
<< UNIV_PAGE_SIZE_SHIFT);
return(DB_ERROR);
}
}
srv_n_log_files_found = i;
/* Create the in-memory file space objects. */
sprintf(logfilename + dirnamelen, "ib_logfile%u", 0);
fil_space_create(logfilename,
SRV_LOG_SPACE_FIRST_ID,
fsp_flags_set_page_size(0, UNIV_PAGE_SIZE),
FIL_LOG);
ut_a(fil_validate());
/* srv_log_file_size is measured in pages; if page size is 16KB,
then we have a limit of 64TB on 32 bit systems */
ut_a(srv_log_file_size <= ULINT_MAX);
for (unsigned j = 0; j < i; j++) {
sprintf(logfilename + dirnamelen, "ib_logfile%u", j);
if (!fil_node_create(logfilename,
(ulint) srv_log_file_size,
SRV_LOG_SPACE_FIRST_ID, FALSE)) {
return(DB_ERROR);
}
}
#ifdef UNIV_LOG_ARCHIVE
/* Create the file space object for archived logs. Under
MySQL, no archiving ever done. */
fil_space_create("arch_log_space", SRV_LOG_SPACE_FIRST_ID + 1,
0, FIL_LOG);
#endif /* UNIV_LOG_ARCHIVE */
log_group_init(0, i, srv_log_file_size * UNIV_PAGE_SIZE,
SRV_LOG_SPACE_FIRST_ID,
SRV_LOG_SPACE_FIRST_ID + 1);
}
files_checked:
/* Open all log files and data files in the system
tablespace: we keep them open until database
shutdown */
fil_open_log_and_system_tablespace_files();
err = srv_undo_tablespaces_init(
create_new_db,
srv_undo_tablespaces,
&srv_undo_tablespaces_open);
/* If the force recovery is set very high then we carry on regardless
of all errors. Basically this is fingers crossed mode. */
if (err != DB_SUCCESS
&& srv_force_recovery < SRV_FORCE_NO_UNDO_LOG_SCAN) {
return(err);
}
/* Initialize objects used by dict stats gathering thread, which
can also be used by recovery if it tries to drop some table */
if (!srv_read_only_mode) {
dict_stats_thread_init();
}
trx_sys_file_format_init();
trx_sys_create();
if (create_new_db) {
ut_a(!srv_read_only_mode);
mtr_start(&mtr);
fsp_header_init(0, sum_of_new_sizes, &mtr);
mtr_commit(&mtr);
/* To maintain backward compatibility we create only
the first rollback segment before the double write buffer.
All the remaining rollback segments will be created later,
after the double write buffer has been created. */
trx_sys_create_sys_pages();
ib_bh = trx_sys_init_at_db_start();
n_recovered_trx = UT_LIST_GET_LEN(trx_sys->rw_trx_list);
/* The purge system needs to create the purge view and
therefore requires that the trx_sys is inited. */
trx_purge_sys_create(srv_n_purge_threads, ib_bh);
err = dict_create();
if (err != DB_SUCCESS) {
return(err);
}
srv_startup_is_before_trx_rollback_phase = FALSE;
bool success = buf_flush_list(ULINT_MAX, LSN_MAX, NULL);
ut_a(success);
min_flushed_lsn = max_flushed_lsn = log_get_lsn();
buf_flush_wait_batch_end(NULL, BUF_FLUSH_LIST);
/* Stamp the LSN to the data files. */
fil_write_flushed_lsn_to_data_files(max_flushed_lsn, 0);
fil_flush_file_spaces(FIL_TABLESPACE);
create_log_files_rename(logfilename, dirnamelen,
max_flushed_lsn, logfile0);
#ifdef UNIV_LOG_ARCHIVE
} else if (srv_archive_recovery) {
ib_logf(IB_LOG_LEVEL_INFO,
" Starting archive recovery from a backup...");
err = recv_recovery_from_archive_start(
min_flushed_lsn, srv_archive_recovery_limit_lsn,
min_arch_log_no);
if (err != DB_SUCCESS) {
return(DB_ERROR);
}
/* Since ibuf init is in dict_boot, and ibuf is needed
in any disk i/o, first call dict_boot */
err = dict_boot();
if (err != DB_SUCCESS) {
return(err);
}
ib_bh = trx_sys_init_at_db_start();
n_recovered_trx = UT_LIST_GET_LEN(trx_sys->rw_trx_list);
/* The purge system needs to create the purge view and
therefore requires that the trx_sys is inited. */
trx_purge_sys_create(srv_n_purge_threads, ib_bh);
srv_startup_is_before_trx_rollback_phase = FALSE;
recv_recovery_from_archive_finish();
#endif /* UNIV_LOG_ARCHIVE */
} else {
/* Check if we support the max format that is stamped
on the system tablespace.
Note: We are NOT allowed to make any modifications to
the TRX_SYS_PAGE_NO page before recovery because this
page also contains the max_trx_id etc. important system
variables that are required for recovery. We need to
ensure that we return the system to a state where normal
recovery is guaranteed to work. We do this by
invalidating the buffer cache, this will force the
reread of the page and restoration to its last known
consistent state, this is REQUIRED for the recovery
process to work. */
err = trx_sys_file_format_max_check(
srv_max_file_format_at_startup);
if (err != DB_SUCCESS) {
return(err);
}
/* Invalidate the buffer pool to ensure that we reread
the page that we read above, during recovery.
Note that this is not as heavy weight as it seems. At
this point there will be only ONE page in the buf_LRU
and there must be no page in the buf_flush list. */
buf_pool_invalidate();
/* We always try to do a recovery, even if the database had
been shut down normally: this is the normal startup path */
err = recv_recovery_from_checkpoint_start(
LOG_CHECKPOINT, LSN_MAX,
min_flushed_lsn, max_flushed_lsn);
if (err != DB_SUCCESS) {
return(DB_ERROR);
}
/* Since the insert buffer init is in dict_boot, and the
insert buffer is needed in any disk i/o, first we call
dict_boot(). Note that trx_sys_init_at_db_start() only needs
to access space 0, and the insert buffer at this stage already
works for space 0. */
err = dict_boot();
if (err != DB_SUCCESS) {
return(err);
}
ib_bh = trx_sys_init_at_db_start();
n_recovered_trx = UT_LIST_GET_LEN(trx_sys->rw_trx_list);
/* The purge system needs to create the purge view and
therefore requires that the trx_sys is inited. */
trx_purge_sys_create(srv_n_purge_threads, ib_bh);
/* recv_recovery_from_checkpoint_finish needs trx lists which
are initialized in trx_sys_init_at_db_start(). */
recv_recovery_from_checkpoint_finish();
if (srv_force_recovery < SRV_FORCE_NO_IBUF_MERGE) {
/* The following call is necessary for the insert
buffer to work with multiple tablespaces. We must
know the mapping between space id's and .ibd file
names.
In a crash recovery, we check that the info in data
dictionary is consistent with what we already know
about space id's from the call of
fil_load_single_table_tablespaces().
In a normal startup, we create the space objects for
every table in the InnoDB data dictionary that has
an .ibd file.
We also determine the maximum tablespace id used. */
dict_check_t dict_check;
if (recv_needed_recovery) {
dict_check = DICT_CHECK_ALL_LOADED;
} else if (n_recovered_trx) {
dict_check = DICT_CHECK_SOME_LOADED;
} else {
dict_check = DICT_CHECK_NONE_LOADED;
}
dict_check_tablespaces_and_store_max_id(dict_check);
}
if (!srv_force_recovery
&& !recv_sys->found_corrupt_log
&& (srv_log_file_size_requested != srv_log_file_size
|| srv_n_log_files_found != srv_n_log_files)) {
/* Prepare to replace the redo log files. */
if (srv_read_only_mode) {
ib_logf(IB_LOG_LEVEL_ERROR,
"Cannot resize log files "
"in read-only mode.");
return(DB_READ_ONLY);
}
/* Clean the buffer pool. */
bool success = buf_flush_list(
ULINT_MAX, LSN_MAX, NULL);
ut_a(success);
RECOVERY_CRASH(1);
min_flushed_lsn = max_flushed_lsn = log_get_lsn();
ib_logf(IB_LOG_LEVEL_WARN,
"Resizing redo log from %u*%u to %u*%u pages"
", LSN=" LSN_PF,
(unsigned) i,
(unsigned) srv_log_file_size,
(unsigned) srv_n_log_files,
(unsigned) srv_log_file_size_requested,
max_flushed_lsn);
buf_flush_wait_batch_end(NULL, BUF_FLUSH_LIST);
RECOVERY_CRASH(2);
/* Flush the old log files. */
log_buffer_flush_to_disk();
/* If innodb_flush_method=O_DSYNC,
we need to explicitly flush the log buffers. */
fil_flush(SRV_LOG_SPACE_FIRST_ID);
ut_ad(max_flushed_lsn == log_get_lsn());
/* Prohibit redo log writes from any other
threads until creating a log checkpoint at the
end of create_log_files(). */
ut_d(recv_no_log_write = TRUE);
ut_ad(!buf_pool_check_no_pending_io());
RECOVERY_CRASH(3);
/* Stamp the LSN to the data files. */
fil_write_flushed_lsn_to_data_files(
max_flushed_lsn, 0);
fil_flush_file_spaces(FIL_TABLESPACE);
RECOVERY_CRASH(4);
/* Close and free the redo log files, so that
we can replace them. */
fil_close_log_files(true);
RECOVERY_CRASH(5);
/* Free the old log file space. */
log_group_close_all();
ib_logf(IB_LOG_LEVEL_WARN,
"Starting to delete and rewrite log files.");
srv_log_file_size = srv_log_file_size_requested;
err = create_log_files(create_new_db, logfilename,
dirnamelen, max_flushed_lsn,
logfile0);
if (err != DB_SUCCESS) {
return(err);
}
create_log_files_rename(logfilename, dirnamelen,
max_flushed_lsn, logfile0);
}
srv_startup_is_before_trx_rollback_phase = FALSE;
recv_recovery_rollback_active();
/* It is possible that file_format tag has never
been set. In this case we initialize it to minimum
value. Important to note that we can do it ONLY after
we have finished the recovery process so that the
image of TRX_SYS_PAGE_NO is not stale. */
trx_sys_file_format_tag_init();
}
if (!create_new_db && sum_of_new_sizes > 0) {
/* New data file(s) were added */
mtr_start(&mtr);
fsp_header_inc_size(0, sum_of_new_sizes, &mtr);
mtr_commit(&mtr);
/* Immediately write the log record about increased tablespace
size to disk, so that it is durable even if mysqld would crash
quickly */
log_buffer_flush_to_disk();
}
#ifdef UNIV_LOG_ARCHIVE
/* Archiving is always off under MySQL */
if (!srv_log_archive_on) {
ut_a(DB_SUCCESS == log_archive_noarchivelog());
} else {
mutex_enter(&(log_sys->mutex));
start_archive = FALSE;
if (log_sys->archiving_state == LOG_ARCH_OFF) {
start_archive = TRUE;
}
mutex_exit(&(log_sys->mutex));
if (start_archive) {
ut_a(DB_SUCCESS == log_archive_archivelog());
}
}
#endif /* UNIV_LOG_ARCHIVE */
/* fprintf(stderr, "Max allowed record size %lu\n",
page_get_free_space_of_empty() / 2); */
if (buf_dblwr == NULL) {
/* Create the doublewrite buffer to a new tablespace */
buf_dblwr_create();
}
/* Here the double write buffer has already been created and so
any new rollback segments will be allocated after the double
write buffer. The default segment should already exist.
We create the new segments only if it's a new database or
the database was shutdown cleanly. */
/* Note: When creating the extra rollback segments during an upgrade
we violate the latching order, even if the change buffer is empty.
We make an exception in sync0sync.cc and check srv_is_being_started
for that violation. It cannot create a deadlock because we are still
running in single threaded mode essentially. Only the IO threads
should be running at this stage. */
ut_a(srv_undo_logs > 0);
ut_a(srv_undo_logs <= TRX_SYS_N_RSEGS);
/* The number of rsegs that exist in InnoDB is given by status
variable srv_available_undo_logs. The number of rsegs to use can
be set using the dynamic global variable srv_undo_logs. */
srv_available_undo_logs = trx_sys_create_rsegs(
srv_undo_tablespaces, srv_undo_logs);
if (srv_available_undo_logs == ULINT_UNDEFINED) {
/* Can only happen if server is read only. */
ut_a(srv_read_only_mode);
srv_undo_logs = ULONG_UNDEFINED;
}
/* Flush the changes made to TRX_SYS_PAGE by trx_sys_create_rsegs()*/
if (!srv_force_recovery && !srv_read_only_mode) {
bool success = buf_flush_list(ULINT_MAX, LSN_MAX, NULL);
ut_a(success);
buf_flush_wait_batch_end(NULL, BUF_FLUSH_LIST);
}
if (!srv_read_only_mode) {
/* Create the thread which watches the timeouts
for lock waits */
os_thread_create(
lock_wait_timeout_thread,
NULL, thread_ids + 2 + SRV_MAX_N_IO_THREADS);
/* Create the thread which warns of long semaphore waits */
os_thread_create(
srv_error_monitor_thread,
NULL, thread_ids + 3 + SRV_MAX_N_IO_THREADS);
/* Create the thread which prints InnoDB monitor info */
os_thread_create(
srv_monitor_thread,
NULL, thread_ids + 4 + SRV_MAX_N_IO_THREADS);
}
/* Create the SYS_FOREIGN and SYS_FOREIGN_COLS system tables */
err = dict_create_or_check_foreign_constraint_tables();
if (err != DB_SUCCESS) {
return(err);
}
/* Create the SYS_TABLESPACES system table */
err = dict_create_or_check_sys_tablespace();
if (err != DB_SUCCESS) {
return(err);
}
srv_is_being_started = FALSE;
ut_a(trx_purge_state() == PURGE_STATE_INIT);
/* Create the master thread which does purge and other utility
operations */
if (!srv_read_only_mode) {
os_thread_create(
srv_master_thread,
NULL, thread_ids + (1 + SRV_MAX_N_IO_THREADS));
}
if (!srv_read_only_mode
&& srv_force_recovery < SRV_FORCE_NO_BACKGROUND) {
os_thread_create(
srv_purge_coordinator_thread,
NULL, thread_ids + 5 + SRV_MAX_N_IO_THREADS);
ut_a(UT_ARR_SIZE(thread_ids)
> 5 + srv_n_purge_threads + SRV_MAX_N_IO_THREADS);
/* We've already created the purge coordinator thread above. */
for (i = 1; i < srv_n_purge_threads; ++i) {
os_thread_create(
srv_worker_thread, NULL,
thread_ids + 5 + i + SRV_MAX_N_IO_THREADS);
}
srv_start_wait_for_purge_to_start();
} else {
purge_sys->state = PURGE_STATE_DISABLED;
}
if (!srv_read_only_mode) {
os_thread_create(buf_flush_page_cleaner_thread, NULL, NULL);
}
#ifdef UNIV_DEBUG
/* buf_debug_prints = TRUE; */
#endif /* UNIV_DEBUG */
sum_of_data_file_sizes = 0;
for (i = 0; i < srv_n_data_files; i++) {
sum_of_data_file_sizes += srv_data_file_sizes[i];
}
tablespace_size_in_header = fsp_header_get_tablespace_size();
if (!srv_read_only_mode
&& !srv_auto_extend_last_data_file
&& sum_of_data_file_sizes != tablespace_size_in_header) {
ut_print_timestamp(stderr);
fprintf(stderr,
" InnoDB: Error: tablespace size"
" stored in header is %lu pages, but\n",
(ulong) tablespace_size_in_header);
ut_print_timestamp(stderr);
fprintf(stderr,
"InnoDB: the sum of data file sizes is %lu pages\n",
(ulong) sum_of_data_file_sizes);
if (srv_force_recovery == 0
&& sum_of_data_file_sizes < tablespace_size_in_header) {
/* This is a fatal error, the tail of a tablespace is
missing */
ut_print_timestamp(stderr);
fprintf(stderr,
" InnoDB: Cannot start InnoDB."
" The tail of the system tablespace is\n");
ut_print_timestamp(stderr);
fprintf(stderr,
" InnoDB: missing. Have you edited"
" innodb_data_file_path in my.cnf in an\n");
ut_print_timestamp(stderr);
fprintf(stderr,
" InnoDB: inappropriate way, removing"
" ibdata files from there?\n");
ut_print_timestamp(stderr);
fprintf(stderr,
" InnoDB: You can set innodb_force_recovery=1"
" in my.cnf to force\n");
ut_print_timestamp(stderr);
fprintf(stderr,
" InnoDB: a startup if you are trying"
" to recover a badly corrupt database.\n");
return(DB_ERROR);
}
}
if (!srv_read_only_mode
&& srv_auto_extend_last_data_file
&& sum_of_data_file_sizes < tablespace_size_in_header) {
ut_print_timestamp(stderr);
fprintf(stderr,
" InnoDB: Error: tablespace size stored in header"
" is %lu pages, but\n",
(ulong) tablespace_size_in_header);
ut_print_timestamp(stderr);
fprintf(stderr,
" InnoDB: the sum of data file sizes"
" is only %lu pages\n",
(ulong) sum_of_data_file_sizes);
if (srv_force_recovery == 0) {
ut_print_timestamp(stderr);
fprintf(stderr,
" InnoDB: Cannot start InnoDB. The tail of"
" the system tablespace is\n");
ut_print_timestamp(stderr);
fprintf(stderr,
" InnoDB: missing. Have you edited"
" innodb_data_file_path in my.cnf in an\n");
ut_print_timestamp(stderr);
fprintf(stderr,
" InnoDB: inappropriate way, removing"
" ibdata files from there?\n");
ut_print_timestamp(stderr);
fprintf(stderr,
" InnoDB: You can set innodb_force_recovery=1"
" in my.cnf to force\n");
ut_print_timestamp(stderr);
fprintf(stderr,
" InnoDB: a startup if you are trying to"
" recover a badly corrupt database.\n");
return(DB_ERROR);
}
}
/* Check that os_fast_mutexes work as expected */
os_fast_mutex_init(PFS_NOT_INSTRUMENTED, &srv_os_test_mutex);
if (0 != os_fast_mutex_trylock(&srv_os_test_mutex)) {
ut_print_timestamp(stderr);
fprintf(stderr,
" InnoDB: Error: pthread_mutex_trylock returns"
" an unexpected value on\n");
ut_print_timestamp(stderr);
fprintf(stderr,
" InnoDB: success! Cannot continue.\n");
exit(1);
}
os_fast_mutex_unlock(&srv_os_test_mutex);
os_fast_mutex_lock(&srv_os_test_mutex);
os_fast_mutex_unlock(&srv_os_test_mutex);
os_fast_mutex_free(&srv_os_test_mutex);
if (srv_print_verbose_log) {
ib_logf(IB_LOG_LEVEL_INFO,
"%s started; log sequence number " LSN_PF "",
INNODB_VERSION_STR, srv_start_lsn);
}
if (srv_force_recovery > 0) {
ib_logf(IB_LOG_LEVEL_INFO,
"!!! innodb_force_recovery is set to %lu !!!",
(ulong) srv_force_recovery);
}
if (srv_force_recovery == 0) {
/* In the insert buffer we may have even bigger tablespace
id's, because we may have dropped those tablespaces, but
insert buffer merge has not had time to clean the records from
the ibuf tree. */
ibuf_update_max_tablespace_id();
}
if (!srv_read_only_mode) {
/* Create the buffer pool dump/load thread */
os_thread_create(buf_dump_thread, NULL, NULL);
/* Create the dict stats gathering thread */
os_thread_create(dict_stats_thread, NULL, NULL);
/* Create the thread that will optimize the FTS sub-system. */
fts_optimize_init();
}
srv_was_started = TRUE;
return(DB_SUCCESS);
}
#if 0
/********************************************************************
Sync all FTS cache before shutdown */
static
void
srv_fts_close(void)
/*===============*/
{
dict_table_t* table;
for (table = UT_LIST_GET_FIRST(dict_sys->table_LRU);
table; table = UT_LIST_GET_NEXT(table_LRU, table)) {
fts_t* fts = table->fts;
if (fts != NULL) {
fts_sync_table(table);
}
}
for (table = UT_LIST_GET_FIRST(dict_sys->table_non_LRU);
table; table = UT_LIST_GET_NEXT(table_LRU, table)) {
fts_t* fts = table->fts;
if (fts != NULL) {
fts_sync_table(table);
}
}
}
#endif
/****************************************************************//**
Shuts down the InnoDB database.
@return DB_SUCCESS or error code */
UNIV_INTERN
dberr_t
innobase_shutdown_for_mysql(void)
/*=============================*/
{
ulint i;
if (!srv_was_started) {
if (srv_is_being_started) {
ib_logf(IB_LOG_LEVEL_WARN,
"Shutting down an improperly started, "
"or created database!");
}
return(DB_SUCCESS);
}
if (!srv_read_only_mode) {
/* Shutdown the FTS optimize sub system. */
fts_optimize_start_shutdown();
fts_optimize_end();
}
/* 1. Flush the buffer pool to disk, write the current lsn to
the tablespace header(s), and copy all log data to archive.
The step 1 is the real InnoDB shutdown. The remaining steps 2 - ...
just free data structures after the shutdown. */
logs_empty_and_mark_files_at_shutdown();
if (srv_conc_get_active_threads() != 0) {
ib_logf(IB_LOG_LEVEL_WARN,
"Query counter shows %ld queries still "
"inside InnoDB at shutdown",
srv_conc_get_active_threads());
}
/* 2. Make all threads created by InnoDB to exit */
srv_shutdown_state = SRV_SHUTDOWN_EXIT_THREADS;
/* All threads end up waiting for certain events. Put those events
to the signaled state. Then the threads will exit themselves after
os_event_wait(). */
for (i = 0; i < 1000; i++) {
/* NOTE: IF YOU CREATE THREADS IN INNODB, YOU MUST EXIT THEM
HERE OR EARLIER */
if (!srv_read_only_mode) {
/* a. Let the lock timeout thread exit */
os_event_set(lock_sys->timeout_event);
/* b. srv error monitor thread exits automatically,
no need to do anything here */
/* c. We wake the master thread so that it exits */
srv_wake_master_thread();
/* d. Wakeup purge threads. */
srv_purge_wakeup();
}
/* e. Exit the i/o threads */
os_aio_wake_all_threads_at_shutdown();
/* f. dict_stats_thread is signaled from
logs_empty_and_mark_files_at_shutdown() and should have
already quit or is quitting right now. */
os_mutex_enter(os_sync_mutex);
if (os_thread_count == 0) {
/* All the threads have exited or are just exiting;
NOTE that the threads may not have completed their
exit yet. Should we use pthread_join() to make sure
they have exited? If we did, we would have to
remove the pthread_detach() from
os_thread_exit(). Now we just sleep 0.1
seconds and hope that is enough! */
os_mutex_exit(os_sync_mutex);
os_thread_sleep(100000);
break;
}
os_mutex_exit(os_sync_mutex);
os_thread_sleep(100000);
}
if (i == 1000) {
ib_logf(IB_LOG_LEVEL_WARN,
"%lu threads created by InnoDB"
" had not exited at shutdown!",
(ulong) os_thread_count);
}
if (srv_monitor_file) {
fclose(srv_monitor_file);
srv_monitor_file = 0;
if (srv_monitor_file_name) {
unlink(srv_monitor_file_name);
mem_free(srv_monitor_file_name);
}
}
if (srv_dict_tmpfile) {
fclose(srv_dict_tmpfile);
srv_dict_tmpfile = 0;
}
if (srv_misc_tmpfile) {
fclose(srv_misc_tmpfile);
srv_misc_tmpfile = 0;
}
if (!srv_read_only_mode) {
dict_stats_thread_deinit();
}
/* This must be disabled before closing the buffer pool
and closing the data dictionary. */
btr_search_disable();
ibuf_close();
log_shutdown();
lock_sys_close();
trx_sys_file_format_close();
trx_sys_close();
/* We don't create these mutexes in RO mode because we don't create
the temp files that the cover. */
if (!srv_read_only_mode) {
mutex_free(&srv_monitor_file_mutex);
mutex_free(&srv_dict_tmpfile_mutex);
mutex_free(&srv_misc_tmpfile_mutex);
}
dict_close();
btr_search_sys_free();
/* 3. Free all InnoDB's own mutexes and the os_fast_mutexes inside
them */
os_aio_free();
que_close();
row_mysql_close();
srv_mon_free();
sync_close();
srv_free();
fil_close();
/* 4. Free the os_conc_mutex and all os_events and os_mutexes */
os_sync_free();
/* 5. Free all allocated memory */
pars_lexer_close();
log_mem_free();
buf_pool_free(srv_buf_pool_instances);
mem_close();
/* ut_free_all_mem() frees all allocated memory not freed yet
in shutdown, and it will also free the ut_list_mutex, so it
should be the last one for all operation */
ut_free_all_mem();
if (os_thread_count != 0
|| os_event_count != 0
|| os_mutex_count != 0
|| os_fast_mutex_count != 0) {
ib_logf(IB_LOG_LEVEL_WARN,
"Some resources were not cleaned up in shutdown: "
"threads %lu, events %lu, os_mutexes %lu, "
"os_fast_mutexes %lu",
(ulong) os_thread_count, (ulong) os_event_count,
(ulong) os_mutex_count, (ulong) os_fast_mutex_count);
}
if (dict_foreign_err_file) {
fclose(dict_foreign_err_file);
}
if (srv_print_verbose_log) {
ib_logf(IB_LOG_LEVEL_INFO,
"Shutdown completed; log sequence number " LSN_PF "",
srv_shutdown_lsn);
}
srv_was_started = FALSE;
srv_start_has_been_called = FALSE;
return(DB_SUCCESS);
}
#endif /* !UNIV_HOTBACKUP */
/********************************************************************
Signal all per-table background threads to shutdown, and wait for them to do
so. */
UNIV_INTERN
void
srv_shutdown_table_bg_threads(void)
/*===============================*/
{
dict_table_t* table;
dict_table_t* first;
dict_table_t* last = NULL;
mutex_enter(&dict_sys->mutex);
/* Signal all threads that they should stop. */
table = UT_LIST_GET_FIRST(dict_sys->table_LRU);
first = table;
while (table) {
dict_table_t* next;
fts_t* fts = table->fts;
if (fts != NULL) {
fts_start_shutdown(table, fts);
}
next = UT_LIST_GET_NEXT(table_LRU, table);
if (!next) {
last = table;
}
table = next;
}
/* We must release dict_sys->mutex here; if we hold on to it in the
loop below, we will deadlock if any of the background threads try to
acquire it (for example, the FTS thread by calling que_eval_sql).
Releasing it here and going through dict_sys->table_LRU without
holding it is safe because:
a) MySQL only starts the shutdown procedure after all client
threads have been disconnected and no new ones are accepted, so no
new tables are added or old ones dropped.
b) Despite its name, the list is not LRU, and the order stays
fixed.
To safeguard against the above assumptions ever changing, we store
the first and last items in the list above, and then check that
they've stayed the same below. */
mutex_exit(&dict_sys->mutex);
/* Wait for the threads of each table to stop. This is not inside
the above loop, because by signaling all the threads first we can
overlap their shutting down delays. */
table = UT_LIST_GET_FIRST(dict_sys->table_LRU);
ut_a(first == table);
while (table) {
dict_table_t* next;
fts_t* fts = table->fts;
if (fts != NULL) {
fts_shutdown(table, fts);
}
next = UT_LIST_GET_NEXT(table_LRU, table);
if (table == last) {
ut_a(!next);
}
table = next;
}
}
/*****************************************************************//**
Get the meta-data filename from the table name. */
UNIV_INTERN
void
srv_get_meta_data_filename(
/*=======================*/
dict_table_t* table, /*!< in: table */
char* filename, /*!< out: filename */
ulint max_len) /*!< in: filename max length */
{
ulint len;
char* path;
char* suffix;
static const ulint suffix_len = strlen(".cfg");
if (DICT_TF_HAS_DATA_DIR(table->flags)) {
dict_get_and_save_data_dir_path(table, false);
ut_a(table->data_dir_path);
path = os_file_make_remote_pathname(
table->data_dir_path, table->name, "cfg");
} else {
path = fil_make_ibd_name(table->name, false);
}
ut_a(path);
len = ut_strlen(path);
ut_a(max_len >= len);
suffix = path + (len - suffix_len);
if (strncmp(suffix, ".cfg", suffix_len) == 0) {
strcpy(filename, path);
} else {
ut_ad(strncmp(suffix, ".ibd", suffix_len) == 0);
strncpy(filename, path, len - suffix_len);
suffix = filename + (len - suffix_len);
strcpy(suffix, ".cfg");
}
mem_free(path);
srv_normalize_path_for_win(filename);
}