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/*****************************************************************************
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Copyright (C) 1995, 2010, Innobase Oy. All Rights Reserved.
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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., 51 Franklin
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St, Fifth Floor, Boston, MA 02110-1301 USA
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*****************************************************************************/
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/**************************************************//**
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The tablespace memory cache
23
Created 10/25/1995 Heikki Tuuri
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*******************************************************/
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#include "hash0hash.h"
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#include "mach0data.h"
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#include "srv0start.h"
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#include "dict0dict.h"
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#include "page0page.h"
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#ifndef UNIV_HOTBACKUP
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# include "ibuf0ibuf.h"
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# include "sync0sync.h"
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#else /* !UNIV_HOTBACKUP */
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static ulint srv_data_read, srv_data_written;
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#endif /* !UNIV_HOTBACKUP */
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IMPLEMENTATION OF THE TABLESPACE MEMORY CACHE
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=============================================
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The tablespace cache is responsible for providing fast read/write access to
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tablespaces and logs of the database. File creation and deletion is done
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in other modules which know more of the logic of the operation, however.
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A tablespace consists of a chain of files. The size of the files does not
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have to be divisible by the database block size, because we may just leave
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the last incomplete block unused. When a new file is appended to the
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tablespace, the maximum size of the file is also specified. At the moment,
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we think that it is best to extend the file to its maximum size already at
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the creation of the file, because then we can avoid dynamically extending
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the file when more space is needed for the tablespace.
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A block's position in the tablespace is specified with a 32-bit unsigned
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integer. The files in the chain are thought to be catenated, and the block
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corresponding to an address n is the nth block in the catenated file (where
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the first block is named the 0th block, and the incomplete block fragments
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at the end of files are not taken into account). A tablespace can be extended
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by appending a new file at the end of the chain.
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Our tablespace concept is similar to the one of Oracle.
77
To acquire more speed in disk transfers, a technique called disk striping is
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sometimes used. This means that logical block addresses are divided in a
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round-robin fashion across several disks. Windows NT supports disk striping,
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so there we do not need to support it in the database. Disk striping is
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implemented in hardware in RAID disks. We conclude that it is not necessary
82
to implement it in the database. Oracle 7 does not support disk striping,
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Another trick used at some database sites is replacing tablespace files by
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raw disks, that is, the whole physical disk drive, or a partition of it, is
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opened as a single file, and it is accessed through byte offsets calculated
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from the start of the disk or the partition. This is recommended in some
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books on database tuning to achieve more speed in i/o. Using raw disk
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certainly prevents the OS from fragmenting disk space, but it is not clear
91
if it really adds speed. We measured on the Pentium 100 MHz + NT + NTFS file
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system + EIDE Conner disk only a negligible difference in speed when reading
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from a file, versus reading from a raw disk.
95
To have fast access to a tablespace or a log file, we put the data structures
96
to a hash table. Each tablespace and log file is given an unique 32-bit
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Some operating systems do not support many open files at the same time,
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though NT seems to tolerate at least 900 open files. Therefore, we put the
101
open files in an LRU-list. If we need to open another file, we may close the
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file at the end of the LRU-list. When an i/o-operation is pending on a file,
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the file cannot be closed. We take the file nodes with pending i/o-operations
104
out of the LRU-list and keep a count of pending operations. When an operation
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completes, we decrement the count and return the file node to the LRU-list if
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the count drops to zero. */
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/** When mysqld is run, the default directory "." is the mysqld datadir,
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but in the MySQL Embedded Server Library and ibbackup it is not the default
110
directory, and we must set the base file path explicitly */
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UNIV_INTERN const char* fil_path_to_mysql_datadir = ".";
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/** The number of fsyncs done to the log */
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UNIV_INTERN ulint fil_n_log_flushes = 0;
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/** Number of pending redo log flushes */
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UNIV_INTERN ulint fil_n_pending_log_flushes = 0;
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/** Number of pending tablespace flushes */
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UNIV_INTERN ulint fil_n_pending_tablespace_flushes = 0;
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/** The null file address */
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UNIV_INTERN fil_addr_t fil_addr_null = {FIL_NULL, 0};
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#ifdef UNIV_PFS_MUTEX
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/* Key to register fil_system_mutex with performance schema */
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UNIV_INTERN mysql_pfs_key_t fil_system_mutex_key;
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#endif /* UNIV_PFS_MUTEX */
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#ifdef UNIV_PFS_RWLOCK
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/* Key to register file space latch with performance schema */
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UNIV_INTERN mysql_pfs_key_t fil_space_latch_key;
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#endif /* UNIV_PFS_RWLOCK */
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/** File node of a tablespace or the log data space */
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struct fil_node_struct {
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fil_space_t* space; /*!< backpointer to the space where this node
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char* name; /*!< path to the file */
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ibool open; /*!< TRUE if file open */
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os_file_t handle; /*!< OS handle to the file, if file open */
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ibool is_raw_disk;/*!< TRUE if the 'file' is actually a raw
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device or a raw disk partition */
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ulint size; /*!< size of the file in database pages, 0 if
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not known yet; the possible last incomplete
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megabyte may be ignored if space == 0 */
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/*!< count of pending i/o's on this file;
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closing of the file is not allowed if
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ulint n_pending_flushes;
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/*!< count of pending flushes on this file;
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closing of the file is not allowed if
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ib_int64_t modification_counter;/*!< when we write to the file we
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increment this by one */
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ib_int64_t flush_counter;/*!< up to what
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modification_counter value we have
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flushed the modifications to disk */
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UT_LIST_NODE_T(fil_node_t) chain;
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/*!< link field for the file chain */
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UT_LIST_NODE_T(fil_node_t) LRU;
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/*!< link field for the LRU list */
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ulint magic_n;/*!< FIL_NODE_MAGIC_N */
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/** Value of fil_node_struct::magic_n */
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#define FIL_NODE_MAGIC_N 89389
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/** Tablespace or log data space: let us call them by a common name space */
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struct fil_space_struct {
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char* name; /*!< space name = the path to the first file in
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ulint id; /*!< space id */
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ib_int64_t tablespace_version;
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/*!< in DISCARD/IMPORT this timestamp
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is used to check if we should ignore
177
an insert buffer merge request for a
178
page because it actually was for the
179
previous incarnation of the space */
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ibool mark; /*!< this is set to TRUE at database startup if
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the space corresponds to a table in the InnoDB
182
data dictionary; so we can print a warning of
183
orphaned tablespaces */
184
ibool stop_ios;/*!< TRUE if we want to rename the
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.ibd file of tablespace and want to
186
stop temporarily posting of new i/o
187
requests on the file */
188
ibool stop_ibuf_merges;
189
/*!< we set this TRUE when we start
190
deleting a single-table tablespace */
191
ibool is_being_deleted;
192
/*!< this is set to TRUE when we start
193
deleting a single-table tablespace and its
194
file; when this flag is set no further i/o
195
or flush requests can be placed on this space,
196
though there may be such requests still being
197
processed on this space */
198
ulint purpose;/*!< FIL_TABLESPACE, FIL_LOG, or
200
UT_LIST_BASE_NODE_T(fil_node_t) chain;
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/*!< base node for the file chain */
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ulint size; /*!< space size in pages; 0 if a single-table
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tablespace whose size we do not know yet;
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last incomplete megabytes in data files may be
205
ignored if space == 0 */
206
ulint flags; /*!< compressed page size and file format, or 0 */
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ulint n_reserved_extents;
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/*!< number of reserved free extents for
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ongoing operations like B-tree page split */
210
ulint n_pending_flushes; /*!< this is positive when flushing
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the tablespace to disk; dropping of the
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tablespace is forbidden if this is positive */
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ulint n_pending_ibuf_merges;/*!< this is positive
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when merging insert buffer entries to
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a page so that we may need to access
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the ibuf bitmap page in the
217
tablespade: dropping of the tablespace
218
is forbidden if this is positive */
219
hash_node_t hash; /*!< hash chain node */
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hash_node_t name_hash;/*!< hash chain the name_hash table */
221
#ifndef UNIV_HOTBACKUP
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rw_lock_t latch; /*!< latch protecting the file space storage
224
#endif /* !UNIV_HOTBACKUP */
225
UT_LIST_NODE_T(fil_space_t) unflushed_spaces;
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/*!< list of spaces with at least one unflushed
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file we have written to */
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ibool is_in_unflushed_spaces; /*!< TRUE if this space is
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currently in unflushed_spaces */
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UT_LIST_NODE_T(fil_space_t) space_list;
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/*!< list of all spaces */
232
ulint magic_n;/*!< FIL_SPACE_MAGIC_N */
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/** Value of fil_space_struct::magic_n */
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#define FIL_SPACE_MAGIC_N 89472
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/** The tablespace memory cache */
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typedef struct fil_system_struct fil_system_t;
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/** The tablespace memory cache; also the totality of logs (the log
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data space) is stored here; below we talk about tablespaces, but also
243
the ib_logfiles form a 'space' and it is handled here */
245
struct fil_system_struct {
246
#ifndef UNIV_HOTBACKUP
247
mutex_t mutex; /*!< The mutex protecting the cache */
248
#endif /* !UNIV_HOTBACKUP */
249
hash_table_t* spaces; /*!< The hash table of spaces in the
250
system; they are hashed on the space
252
hash_table_t* name_hash; /*!< hash table based on the space
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UT_LIST_BASE_NODE_T(fil_node_t) LRU;
255
/*!< base node for the LRU list of the
256
most recently used open files with no
257
pending i/o's; if we start an i/o on
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the file, we first remove it from this
259
list, and return it to the start of
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the list when the i/o ends;
261
log files and the system tablespace are
262
not put to this list: they are opened
263
after the startup, and kept open until
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UT_LIST_BASE_NODE_T(fil_space_t) unflushed_spaces;
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/*!< base node for the list of those
267
tablespaces whose files contain
268
unflushed writes; those spaces have
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at least one file node where
270
modification_counter > flush_counter */
271
ulint n_open; /*!< number of files currently open */
272
ulint max_n_open; /*!< n_open is not allowed to exceed
274
ib_int64_t modification_counter;/*!< when we write to a file we
275
increment this by one */
276
ulint max_assigned_id;/*!< maximum space id in the existing
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tables, or assigned during the time
278
mysqld has been up; at an InnoDB
279
startup we scan the data dictionary
280
and set here the maximum of the
281
space id's of the tables there */
282
ib_int64_t tablespace_version;
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/*!< a counter which is incremented for
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every space object memory creation;
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every space mem object gets a
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'timestamp' from this; in DISCARD/
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IMPORT this is used to check if we
288
should ignore an insert buffer merge
290
UT_LIST_BASE_NODE_T(fil_space_t) space_list;
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/*!< list of all file spaces */
292
ibool space_id_reuse_warned;
293
/* !< TRUE if fil_space_create()
294
has issued a warning about
295
potential space_id reuse */
298
/** The tablespace memory cache. This variable is NULL before the module is
300
static fil_system_t* fil_system = NULL;
303
/********************************************************************//**
304
NOTE: you must call fil_mutex_enter_and_prepare_for_io() first!
306
Prepares a file node for i/o. Opens the file if it is closed. Updates the
307
pending i/o's field in the node and the system appropriately. Takes the node
308
off the LRU list if it is in the LRU list. The caller must hold the fil_sys
312
fil_node_prepare_for_io(
313
/*====================*/
314
fil_node_t* node, /*!< in: file node */
315
fil_system_t* system, /*!< in: tablespace memory cache */
316
fil_space_t* space); /*!< in: space */
317
/********************************************************************//**
318
Updates the data structures when an i/o operation finishes. Updates the
319
pending i/o's field in the node appropriately. */
322
fil_node_complete_io(
323
/*=================*/
324
fil_node_t* node, /*!< in: file node */
325
fil_system_t* system, /*!< in: tablespace memory cache */
326
ulint type); /*!< in: OS_FILE_WRITE or OS_FILE_READ; marks
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the node as modified if
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type == OS_FILE_WRITE */
329
/*******************************************************************//**
330
Checks if a single-table tablespace for a given table name exists in the
331
tablespace memory cache.
332
@return space id, ULINT_UNDEFINED if not found */
335
fil_get_space_id_for_table(
336
/*=======================*/
337
const char* name); /*!< in: table name in the standard
338
'databasename/tablename' format */
339
/*******************************************************************//**
340
Frees a space object from the tablespace memory cache. Closes the files in
341
the chain but does not delete them. There must not be any pending i/o's or
342
flushes on the files. */
347
/* out: TRUE if success */
348
ulint id, /* in: space id */
349
ibool own_mutex);/* in: TRUE if own system->mutex */
350
/********************************************************************//**
351
Reads data from a space to a buffer. Remember that the possible incomplete
352
blocks at the end of file are ignored: they are not taken into account when
353
calculating the byte offset within a space.
354
@return DB_SUCCESS, or DB_TABLESPACE_DELETED if we are trying to do
355
i/o on a tablespace which does not exist */
360
ibool sync, /*!< in: TRUE if synchronous aio is desired */
361
ulint space_id, /*!< in: space id */
362
ulint zip_size, /*!< in: compressed page size in bytes;
363
0 for uncompressed pages */
364
ulint block_offset, /*!< in: offset in number of blocks */
365
ulint byte_offset, /*!< in: remainder of offset in bytes; in aio
366
this must be divisible by the OS block size */
367
ulint len, /*!< in: how many bytes to read; this must not
368
cross a file boundary; in aio this must be a
369
block size multiple */
370
void* buf, /*!< in/out: buffer where to store data read;
371
in aio this must be appropriately aligned */
372
void* message) /*!< in: message for aio handler if non-sync
373
aio used, else ignored */
375
return(fil_io(OS_FILE_READ, sync, space_id, zip_size, block_offset,
376
byte_offset, len, buf, message));
379
/********************************************************************//**
380
Writes data to a space from a buffer. Remember that the possible incomplete
381
blocks at the end of file are ignored: they are not taken into account when
382
calculating the byte offset within a space.
383
@return DB_SUCCESS, or DB_TABLESPACE_DELETED if we are trying to do
384
i/o on a tablespace which does not exist */
389
ibool sync, /*!< in: TRUE if synchronous aio is desired */
390
ulint space_id, /*!< in: space id */
391
ulint zip_size, /*!< in: compressed page size in bytes;
392
0 for uncompressed pages */
393
ulint block_offset, /*!< in: offset in number of blocks */
394
ulint byte_offset, /*!< in: remainder of offset in bytes; in aio
395
this must be divisible by the OS block size */
396
ulint len, /*!< in: how many bytes to write; this must
397
not cross a file boundary; in aio this must
398
be a block size multiple */
399
void* buf, /*!< in: buffer from which to write; in aio
400
this must be appropriately aligned */
401
void* message) /*!< in: message for aio handler if non-sync
402
aio used, else ignored */
404
return(fil_io(OS_FILE_WRITE, sync, space_id, zip_size, block_offset,
405
byte_offset, len, buf, message));
408
/*******************************************************************//**
409
Returns the table space by a given id, NULL if not found. */
414
ulint id) /*!< in: space id */
418
ut_ad(mutex_own(&fil_system->mutex));
420
HASH_SEARCH(hash, fil_system->spaces, id,
422
ut_ad(space->magic_n == FIL_SPACE_MAGIC_N),
428
/*******************************************************************//**
429
Returns the table space by a given name, NULL if not found. */
432
fil_space_get_by_name(
433
/*==================*/
434
const char* name) /*!< in: space name */
439
ut_ad(mutex_own(&fil_system->mutex));
441
fold = ut_fold_string(name);
443
HASH_SEARCH(name_hash, fil_system->name_hash, fold,
445
ut_ad(space->magic_n == FIL_SPACE_MAGIC_N),
446
!strcmp(name, space->name));
451
#ifndef UNIV_HOTBACKUP
452
/*******************************************************************//**
453
Returns the version number of a tablespace, -1 if not found.
454
@return version number, -1 if the tablespace does not exist in the
458
fil_space_get_version(
459
/*==================*/
460
ulint id) /*!< in: space id */
463
ib_int64_t version = -1;
467
mutex_enter(&fil_system->mutex);
469
space = fil_space_get_by_id(id);
472
version = space->tablespace_version;
475
mutex_exit(&fil_system->mutex);
480
/*******************************************************************//**
481
Returns the latch of a file space.
482
@return latch protecting storage allocation */
487
ulint id, /*!< in: space id */
488
ulint* flags) /*!< out: tablespace flags */
494
mutex_enter(&fil_system->mutex);
496
space = fil_space_get_by_id(id);
501
*flags = space->flags;
504
mutex_exit(&fil_system->mutex);
506
return(&(space->latch));
509
/*******************************************************************//**
510
Returns the type of a file space.
511
@return FIL_TABLESPACE or FIL_LOG */
516
ulint id) /*!< in: space id */
522
mutex_enter(&fil_system->mutex);
524
space = fil_space_get_by_id(id);
528
mutex_exit(&fil_system->mutex);
530
return(space->purpose);
532
#endif /* !UNIV_HOTBACKUP */
534
/**********************************************************************//**
535
Checks if all the file nodes in a space are flushed. The caller must hold
536
the fil_system mutex.
537
@return TRUE if all are flushed */
540
fil_space_is_flushed(
541
/*=================*/
542
fil_space_t* space) /*!< in: space */
546
ut_ad(mutex_own(&fil_system->mutex));
548
node = UT_LIST_GET_FIRST(space->chain);
551
if (node->modification_counter > node->flush_counter) {
556
node = UT_LIST_GET_NEXT(chain, node);
562
/*******************************************************************//**
563
Appends a new file to the chain of files of a space. File must be closed. */
568
const char* name, /*!< in: file name (file must be closed) */
569
ulint size, /*!< in: file size in database blocks, rounded
570
downwards to an integer */
571
ulint id, /*!< in: space id where to append */
572
ibool is_raw) /*!< in: TRUE if a raw device or
573
a raw disk partition */
581
mutex_enter(&fil_system->mutex);
583
node = mem_alloc(sizeof(fil_node_t));
585
node->name = mem_strdup(name);
588
ut_a(!is_raw || srv_start_raw_disk_in_use);
590
node->is_raw_disk = is_raw;
592
node->magic_n = FIL_NODE_MAGIC_N;
594
node->n_pending_flushes = 0;
596
node->modification_counter = 0;
597
node->flush_counter = 0;
599
space = fil_space_get_by_id(id);
602
ut_print_timestamp(stderr);
604
" InnoDB: Error: Could not find tablespace %lu for\n"
605
"InnoDB: file ", (ulong) id);
606
ut_print_filename(stderr, name);
607
fputs(" in the tablespace memory cache.\n", stderr);
608
mem_free(node->name);
612
mutex_exit(&fil_system->mutex);
621
UT_LIST_ADD_LAST(chain, space->chain, node);
623
if (id < SRV_LOG_SPACE_FIRST_ID && fil_system->max_assigned_id < id) {
625
fil_system->max_assigned_id = id;
628
mutex_exit(&fil_system->mutex);
631
/********************************************************************//**
632
Opens a the file of a node of a tablespace. The caller must own the fil_system
638
fil_node_t* node, /*!< in: file node */
639
fil_system_t* system, /*!< in: tablespace memory cache */
640
fil_space_t* space) /*!< in: space */
642
ib_int64_t size_bytes;
652
ut_ad(mutex_own(&(system->mutex)));
653
ut_a(node->n_pending == 0);
654
ut_a(node->open == FALSE);
656
if (node->size == 0) {
657
/* It must be a single-table tablespace and we do not know the
658
size of the file yet. First we open the file in the normal
659
mode, no async I/O here, for simplicity. Then do some checks,
660
and close the file again.
661
NOTE that we could not use the simple file read function
662
os_file_read() in Windows to read from a file opened for
665
node->handle = os_file_create_simple_no_error_handling(
666
innodb_file_data_key, node->name, OS_FILE_OPEN,
667
OS_FILE_READ_ONLY, &success);
669
/* The following call prints an error message */
670
os_file_get_last_error(TRUE);
672
ut_print_timestamp(stderr);
675
" InnoDB: Fatal error: cannot open %s\n."
676
"InnoDB: Have you deleted .ibd files"
677
" under a running mysqld server?\n",
682
os_file_get_size(node->handle, &size_low, &size_high);
684
size_bytes = (((ib_int64_t)size_high) << 32)
685
+ (ib_int64_t)size_low;
686
#ifdef UNIV_HOTBACKUP
687
if (space->id == 0) {
688
node->size = (ulint) (size_bytes / UNIV_PAGE_SIZE);
689
os_file_close(node->handle);
692
#endif /* UNIV_HOTBACKUP */
693
ut_a(space->purpose != FIL_LOG);
694
ut_a(space->id != 0);
696
if (size_bytes < FIL_IBD_FILE_INITIAL_SIZE * UNIV_PAGE_SIZE) {
698
"InnoDB: Error: the size of single-table"
699
" tablespace file %s\n"
700
"InnoDB: is only %lu %lu,"
701
" should be at least %lu!\n",
705
(ulong) (FIL_IBD_FILE_INITIAL_SIZE
711
/* Read the first page of the tablespace */
713
buf2 = ut_malloc(2 * UNIV_PAGE_SIZE);
714
/* Align the memory for file i/o if we might have O_DIRECT
716
page = ut_align(buf2, UNIV_PAGE_SIZE);
718
success = os_file_read(node->handle, page, 0, 0,
720
space_id = fsp_header_get_space_id(page);
721
flags = fsp_header_get_flags(page);
725
/* Close the file now that we have read the space id from it */
727
os_file_close(node->handle);
729
if (UNIV_UNLIKELY(space_id != space->id)) {
731
"InnoDB: Error: tablespace id is %lu"
732
" in the data dictionary\n"
733
"InnoDB: but in file %s it is %lu!\n",
734
space->id, node->name, space_id);
739
if (UNIV_UNLIKELY(space_id == ULINT_UNDEFINED
742
"InnoDB: Error: tablespace id %lu"
743
" in file %s is not sensible\n",
744
(ulong) space_id, node->name);
749
if (UNIV_UNLIKELY(space->flags != flags)) {
751
"InnoDB: Error: table flags are %lx"
752
" in the data dictionary\n"
753
"InnoDB: but the flags in file %s are %lx!\n",
754
space->flags, node->name, flags);
759
if (size_bytes >= 1024 * 1024) {
760
/* Truncate the size to whole megabytes. */
761
size_bytes = ut_2pow_round(size_bytes, 1024 * 1024);
764
if (!(flags & DICT_TF_ZSSIZE_MASK)) {
765
node->size = (ulint) (size_bytes / UNIV_PAGE_SIZE);
769
/ dict_table_flags_to_zip_size(flags));
772
#ifdef UNIV_HOTBACKUP
774
#endif /* UNIV_HOTBACKUP */
775
space->size += node->size;
778
/* printf("Opening file %s\n", node->name); */
780
/* Open the file for reading and writing, in Windows normally in the
781
unbuffered async I/O mode, though global variables may make
782
os_file_create() to fall back to the normal file I/O mode. */
784
if (space->purpose == FIL_LOG) {
785
node->handle = os_file_create(innodb_file_log_key,
786
node->name, OS_FILE_OPEN,
787
OS_FILE_AIO, OS_LOG_FILE,
789
} else if (node->is_raw_disk) {
790
node->handle = os_file_create(innodb_file_data_key,
793
OS_FILE_AIO, OS_DATA_FILE,
796
node->handle = os_file_create(innodb_file_data_key,
797
node->name, OS_FILE_OPEN,
798
OS_FILE_AIO, OS_DATA_FILE,
808
if (space->purpose == FIL_TABLESPACE && space->id != 0) {
809
/* Put the node to the LRU list */
810
UT_LIST_ADD_FIRST(LRU, system->LRU, node);
814
/**********************************************************************//**
820
fil_node_t* node, /*!< in: file node */
821
fil_system_t* system) /*!< in: tablespace memory cache */
825
ut_ad(node && system);
826
ut_ad(mutex_own(&(system->mutex)));
828
ut_a(node->n_pending == 0);
829
ut_a(node->n_pending_flushes == 0);
830
ut_a(node->modification_counter == node->flush_counter);
832
ret = os_file_close(node->handle);
835
/* printf("Closing file %s\n", node->name); */
838
ut_a(system->n_open > 0);
841
if (node->space->purpose == FIL_TABLESPACE && node->space->id != 0) {
842
ut_a(UT_LIST_GET_LEN(system->LRU) > 0);
844
/* The node is in the LRU list, remove it */
845
UT_LIST_REMOVE(LRU, system->LRU, node);
849
/********************************************************************//**
850
Tries to close a file in the LRU list. The caller must hold the fil_sys
852
@return TRUE if success, FALSE if should retry later; since i/o's
853
generally complete in < 100 ms, and as InnoDB writes at most 128 pages
854
from the buffer pool in a batch, and then immediately flushes the
855
files, there is a good chance that the next time we find a suitable
856
node from the LRU list */
859
fil_try_to_close_file_in_LRU(
860
/*=========================*/
861
ibool print_info) /*!< in: if TRUE, prints information why it
862
cannot close a file */
866
ut_ad(mutex_own(&fil_system->mutex));
868
node = UT_LIST_GET_LAST(fil_system->LRU);
872
"InnoDB: fil_sys open file LRU len %lu\n",
873
(ulong) UT_LIST_GET_LEN(fil_system->LRU));
876
while (node != NULL) {
877
if (node->modification_counter == node->flush_counter
878
&& node->n_pending_flushes == 0) {
880
fil_node_close_file(node, fil_system);
885
if (print_info && node->n_pending_flushes > 0) {
886
fputs("InnoDB: cannot close file ", stderr);
887
ut_print_filename(stderr, node->name);
888
fprintf(stderr, ", because n_pending_flushes %lu\n",
889
(ulong) node->n_pending_flushes);
893
&& node->modification_counter != node->flush_counter) {
894
fputs("InnoDB: cannot close file ", stderr);
895
ut_print_filename(stderr, node->name);
897
", because mod_count %ld != fl_count %ld\n",
898
(long) node->modification_counter,
899
(long) node->flush_counter);
902
node = UT_LIST_GET_PREV(LRU, node);
908
/*******************************************************************//**
909
Reserves the fil_system mutex and tries to make sure we can open at least one
910
file while holding it. This should be called before calling
911
fil_node_prepare_for_io(), because that function may need to open a file. */
914
fil_mutex_enter_and_prepare_for_io(
915
/*===============================*/
916
ulint space_id) /*!< in: space id */
920
ibool print_info = FALSE;
925
mutex_enter(&fil_system->mutex);
927
if (space_id == 0 || space_id >= SRV_LOG_SPACE_FIRST_ID) {
928
/* We keep log files and system tablespace files always open;
929
this is important in preventing deadlocks in this module, as
930
a page read completion often performs another read from the
931
insert buffer. The insert buffer is in tablespace 0, and we
932
cannot end up waiting in this function. */
937
if (fil_system->n_open < fil_system->max_n_open) {
942
space = fil_space_get_by_id(space_id);
944
if (space != NULL && space->stop_ios) {
945
/* We are going to do a rename file and want to stop new i/o's
948
if (count2 > 20000) {
949
fputs("InnoDB: Warning: tablespace ", stderr);
950
ut_print_filename(stderr, space->name);
952
" has i/o ops stopped for a long time %lu\n",
956
mutex_exit(&fil_system->mutex);
958
os_thread_sleep(20000);
965
/* If the file is already open, no need to do anything; if the space
966
does not exist, we handle the situation in the function which called
969
if (!space || UT_LIST_GET_FIRST(space->chain)->open) {
978
/* Too many files are open, try to close some */
980
success = fil_try_to_close_file_in_LRU(print_info);
982
if (success && fil_system->n_open >= fil_system->max_n_open) {
987
if (fil_system->n_open < fil_system->max_n_open) {
994
ut_print_timestamp(stderr);
996
" InnoDB: Warning: too many (%lu) files stay open"
997
" while the maximum\n"
998
"InnoDB: allowed value would be %lu.\n"
999
"InnoDB: You may need to raise the value of"
1000
" innodb_open_files in\n"
1001
"InnoDB: my.cnf.\n",
1002
(ulong) fil_system->n_open,
1003
(ulong) fil_system->max_n_open);
1008
mutex_exit(&fil_system->mutex);
1010
#ifndef UNIV_HOTBACKUP
1011
/* Wake the i/o-handler threads to make sure pending i/o's are
1013
os_aio_simulated_wake_handler_threads();
1015
os_thread_sleep(20000);
1017
/* Flush tablespaces so that we can close modified files in the LRU
1020
fil_flush_file_spaces(FIL_TABLESPACE);
1027
/*******************************************************************//**
1028
Frees a file node object from a tablespace memory cache. */
1033
fil_node_t* node, /*!< in, own: file node */
1034
fil_system_t* system, /*!< in: tablespace memory cache */
1035
fil_space_t* space) /*!< in: space where the file node is chained */
1037
ut_ad(node && system && space);
1038
ut_ad(mutex_own(&(system->mutex)));
1039
ut_a(node->magic_n == FIL_NODE_MAGIC_N);
1040
ut_a(node->n_pending == 0);
1043
/* We fool the assertion in fil_node_close_file() to think
1044
there are no unflushed modifications in the file */
1046
node->modification_counter = node->flush_counter;
1048
if (space->is_in_unflushed_spaces
1049
&& fil_space_is_flushed(space)) {
1051
space->is_in_unflushed_spaces = FALSE;
1053
UT_LIST_REMOVE(unflushed_spaces,
1054
system->unflushed_spaces,
1058
fil_node_close_file(node, system);
1061
space->size -= node->size;
1063
UT_LIST_REMOVE(chain, space->chain, node);
1065
mem_free(node->name);
1069
#ifdef UNIV_LOG_ARCHIVE
1070
/****************************************************************//**
1071
Drops files from the start of a file space, so that its size is cut by
1072
the amount given. */
1075
fil_space_truncate_start(
1076
/*=====================*/
1077
ulint id, /*!< in: space id */
1078
ulint trunc_len) /*!< in: truncate by this much; it is an error
1079
if this does not equal to the combined size of
1080
some initial files in the space */
1085
mutex_enter(&fil_system->mutex);
1087
space = fil_space_get_by_id(id);
1091
while (trunc_len > 0) {
1092
node = UT_LIST_GET_FIRST(space->chain);
1094
ut_a(node->size * UNIV_PAGE_SIZE <= trunc_len);
1096
trunc_len -= node->size * UNIV_PAGE_SIZE;
1098
fil_node_free(node, fil_system, space);
1101
mutex_exit(&fil_system->mutex);
1103
#endif /* UNIV_LOG_ARCHIVE */
1105
/*******************************************************************//**
1106
Creates a space memory object and puts it to the tablespace memory cache. If
1107
there is an error, prints an error message to the .err log.
1108
@return TRUE if success */
1113
const char* name, /*!< in: space name */
1114
ulint id, /*!< in: space id */
1115
ulint flags, /*!< in: compressed page size
1116
and file format, or 0 */
1117
ulint purpose)/*!< in: FIL_TABLESPACE, or FIL_LOG if log */
1121
/* The tablespace flags (FSP_SPACE_FLAGS) should be 0 for
1123
((table->flags & ~(~0 << DICT_TF_BITS)) == DICT_TF_COMPACT) and
1124
ROW_FORMAT=REDUNDANT (table->flags == 0). For any other
1125
format, the tablespace flags should equal
1126
(table->flags & ~(~0 << DICT_TF_BITS)). */
1127
ut_a(flags != DICT_TF_COMPACT);
1128
ut_a(!(flags & (~0UL << DICT_TF_BITS)));
1132
"InnoDB: Adding tablespace %lu of name %s, purpose %lu\n", id, name,
1138
mutex_enter(&fil_system->mutex);
1140
space = fil_space_get_by_name(name);
1142
if (UNIV_LIKELY_NULL(space)) {
1145
ut_print_timestamp(stderr);
1147
" InnoDB: Warning: trying to init to the"
1148
" tablespace memory cache\n"
1149
"InnoDB: a tablespace %lu of name ", (ulong) id);
1150
ut_print_filename(stderr, name);
1151
fprintf(stderr, ",\n"
1152
"InnoDB: but a tablespace %lu of the same name\n"
1153
"InnoDB: already exists in the"
1154
" tablespace memory cache!\n",
1157
if (id == 0 || purpose != FIL_TABLESPACE) {
1159
mutex_exit(&fil_system->mutex);
1165
"InnoDB: We assume that InnoDB did a crash recovery,"
1167
"InnoDB: an .ibd file for which the table"
1168
" did not exist in the\n"
1169
"InnoDB: InnoDB internal data dictionary in the"
1171
"InnoDB: We assume that you later removed the"
1172
" .ibd and .frm files,\n"
1173
"InnoDB: and are now trying to recreate the table."
1174
" We now remove the\n"
1175
"InnoDB: conflicting tablespace object"
1176
" from the memory cache and try\n"
1177
"InnoDB: the init again.\n");
1179
namesake_id = space->id;
1181
mutex_exit(&fil_system->mutex);
1183
fil_space_free(namesake_id, FALSE);
1188
space = fil_space_get_by_id(id);
1190
if (UNIV_LIKELY_NULL(space)) {
1192
"InnoDB: Error: trying to add tablespace %lu"
1193
" of name ", (ulong) id);
1194
ut_print_filename(stderr, name);
1195
fprintf(stderr, "\n"
1196
"InnoDB: to the tablespace memory cache,"
1198
"InnoDB: %lu of name ", (ulong) space->id);
1199
ut_print_filename(stderr, space->name);
1200
fputs(" already exists in the tablespace\n"
1201
"InnoDB: memory cache!\n", stderr);
1203
mutex_exit(&fil_system->mutex);
1208
space = mem_alloc(sizeof(fil_space_t));
1210
space->name = mem_strdup(name);
1213
fil_system->tablespace_version++;
1214
space->tablespace_version = fil_system->tablespace_version;
1215
space->mark = FALSE;
1217
if (UNIV_LIKELY(purpose == FIL_TABLESPACE && !recv_recovery_on)
1218
&& UNIV_UNLIKELY(id > fil_system->max_assigned_id)) {
1219
if (!fil_system->space_id_reuse_warned) {
1220
fil_system->space_id_reuse_warned = TRUE;
1222
ut_print_timestamp(stderr);
1224
" InnoDB: Warning: allocated tablespace %lu,"
1225
" old maximum was %lu\n",
1227
(ulong) fil_system->max_assigned_id);
1230
fil_system->max_assigned_id = id;
1233
space->stop_ios = FALSE;
1234
space->stop_ibuf_merges = FALSE;
1235
space->is_being_deleted = FALSE;
1236
space->purpose = purpose;
1238
space->flags = flags;
1240
space->n_reserved_extents = 0;
1242
space->n_pending_flushes = 0;
1243
space->n_pending_ibuf_merges = 0;
1245
UT_LIST_INIT(space->chain);
1246
space->magic_n = FIL_SPACE_MAGIC_N;
1248
rw_lock_create(fil_space_latch_key, &space->latch, SYNC_FSP);
1250
HASH_INSERT(fil_space_t, hash, fil_system->spaces, id, space);
1252
HASH_INSERT(fil_space_t, name_hash, fil_system->name_hash,
1253
ut_fold_string(name), space);
1254
space->is_in_unflushed_spaces = FALSE;
1256
UT_LIST_ADD_LAST(space_list, fil_system->space_list, space);
1258
mutex_exit(&fil_system->mutex);
1263
/*******************************************************************//**
1264
Assigns a new space id for a new single-table tablespace. This works simply by
1265
incrementing the global counter. If 4 billion id's is not enough, we may need
1267
@return TRUE if assigned, FALSE if not */
1270
fil_assign_new_space_id(
1271
/*====================*/
1272
ulint* space_id) /*!< in/out: space id */
1277
mutex_enter(&fil_system->mutex);
1281
if (id < fil_system->max_assigned_id) {
1282
id = fil_system->max_assigned_id;
1287
if (id > (SRV_LOG_SPACE_FIRST_ID / 2) && (id % 1000000UL == 0)) {
1288
ut_print_timestamp(stderr);
1290
"InnoDB: Warning: you are running out of new"
1291
" single-table tablespace id's.\n"
1292
"InnoDB: Current counter is %lu and it"
1293
" must not exceed %lu!\n"
1294
"InnoDB: To reset the counter to zero"
1295
" you have to dump all your tables and\n"
1296
"InnoDB: recreate the whole InnoDB installation.\n",
1298
(ulong) SRV_LOG_SPACE_FIRST_ID);
1301
success = (id < SRV_LOG_SPACE_FIRST_ID);
1304
*space_id = fil_system->max_assigned_id = id;
1306
ut_print_timestamp(stderr);
1308
"InnoDB: You have run out of single-table"
1309
" tablespace id's!\n"
1310
"InnoDB: Current counter is %lu.\n"
1311
"InnoDB: To reset the counter to zero you"
1312
" have to dump all your tables and\n"
1313
"InnoDB: recreate the whole InnoDB installation.\n",
1315
*space_id = ULINT_UNDEFINED;
1318
mutex_exit(&fil_system->mutex);
1323
/*******************************************************************//**
1324
Frees a space object from the tablespace memory cache. Closes the files in
1325
the chain but does not delete them. There must not be any pending i/o's or
1326
flushes on the files.
1327
@return TRUE if success */
1332
/* out: TRUE if success */
1333
ulint id, /* in: space id */
1334
ibool own_mutex) /* in: TRUE if own system->mutex */
1337
fil_space_t* namespace;
1338
fil_node_t* fil_node;
1341
mutex_enter(&fil_system->mutex);
1344
space = fil_space_get_by_id(id);
1347
ut_print_timestamp(stderr);
1349
" InnoDB: Error: trying to remove tablespace %lu"
1350
" from the cache but\n"
1351
"InnoDB: it is not there.\n", (ulong) id);
1353
mutex_exit(&fil_system->mutex);
1358
HASH_DELETE(fil_space_t, hash, fil_system->spaces, id, space);
1360
namespace = fil_space_get_by_name(space->name);
1362
ut_a(space == namespace);
1364
HASH_DELETE(fil_space_t, name_hash, fil_system->name_hash,
1365
ut_fold_string(space->name), space);
1367
if (space->is_in_unflushed_spaces) {
1368
space->is_in_unflushed_spaces = FALSE;
1370
UT_LIST_REMOVE(unflushed_spaces, fil_system->unflushed_spaces,
1374
UT_LIST_REMOVE(space_list, fil_system->space_list, space);
1376
ut_a(space->magic_n == FIL_SPACE_MAGIC_N);
1377
ut_a(0 == space->n_pending_flushes);
1379
fil_node = UT_LIST_GET_FIRST(space->chain);
1381
while (fil_node != NULL) {
1382
fil_node_free(fil_node, fil_system, space);
1384
fil_node = UT_LIST_GET_FIRST(space->chain);
1387
ut_a(0 == UT_LIST_GET_LEN(space->chain));
1390
mutex_exit(&fil_system->mutex);
1393
rw_lock_free(&(space->latch));
1395
mem_free(space->name);
1401
/*******************************************************************//**
1402
Returns the size of the space in pages. The tablespace must be cached in the
1404
@return space size, 0 if space not found */
1409
ulint id) /*!< in: space id */
1417
fil_mutex_enter_and_prepare_for_io(id);
1419
space = fil_space_get_by_id(id);
1421
if (space == NULL) {
1422
mutex_exit(&fil_system->mutex);
1427
if (space->size == 0 && space->purpose == FIL_TABLESPACE) {
1430
ut_a(1 == UT_LIST_GET_LEN(space->chain));
1432
node = UT_LIST_GET_FIRST(space->chain);
1434
/* It must be a single-table tablespace and we have not opened
1435
the file yet; the following calls will open it and update the
1438
fil_node_prepare_for_io(node, fil_system, space);
1439
fil_node_complete_io(node, fil_system, OS_FILE_READ);
1444
mutex_exit(&fil_system->mutex);
1449
/*******************************************************************//**
1450
Returns the flags of the space. The tablespace must be cached
1451
in the memory cache.
1452
@return flags, ULINT_UNDEFINED if space not found */
1455
fil_space_get_flags(
1456
/*================*/
1457
ulint id) /*!< in: space id */
1465
if (UNIV_UNLIKELY(!id)) {
1469
fil_mutex_enter_and_prepare_for_io(id);
1471
space = fil_space_get_by_id(id);
1473
if (space == NULL) {
1474
mutex_exit(&fil_system->mutex);
1476
return(ULINT_UNDEFINED);
1479
if (space->size == 0 && space->purpose == FIL_TABLESPACE) {
1482
ut_a(1 == UT_LIST_GET_LEN(space->chain));
1484
node = UT_LIST_GET_FIRST(space->chain);
1486
/* It must be a single-table tablespace and we have not opened
1487
the file yet; the following calls will open it and update the
1490
fil_node_prepare_for_io(node, fil_system, space);
1491
fil_node_complete_io(node, fil_system, OS_FILE_READ);
1494
flags = space->flags;
1496
mutex_exit(&fil_system->mutex);
1501
/*******************************************************************//**
1502
Returns the compressed page size of the space, or 0 if the space
1503
is not compressed. The tablespace must be cached in the memory cache.
1504
@return compressed page size, ULINT_UNDEFINED if space not found */
1507
fil_space_get_zip_size(
1508
/*===================*/
1509
ulint id) /*!< in: space id */
1513
flags = fil_space_get_flags(id);
1515
if (flags && flags != ULINT_UNDEFINED) {
1517
return(dict_table_flags_to_zip_size(flags));
1523
/*******************************************************************//**
1524
Checks if the pair space, page_no refers to an existing page in a tablespace
1525
file space. The tablespace must be cached in the memory cache.
1526
@return TRUE if the address is meaningful */
1529
fil_check_adress_in_tablespace(
1530
/*===========================*/
1531
ulint id, /*!< in: space id */
1532
ulint page_no)/*!< in: page number */
1534
if (fil_space_get_size(id) > page_no) {
1542
/****************************************************************//**
1543
Initializes the tablespace memory cache. */
1548
ulint hash_size, /*!< in: hash table size */
1549
ulint max_n_open) /*!< in: max number of open files */
1551
ut_a(fil_system == NULL);
1553
ut_a(hash_size > 0);
1554
ut_a(max_n_open > 0);
1556
fil_system = mem_zalloc(sizeof(fil_system_t));
1558
mutex_create(fil_system_mutex_key,
1559
&fil_system->mutex, SYNC_ANY_LATCH);
1561
fil_system->spaces = hash_create(hash_size);
1562
fil_system->name_hash = hash_create(hash_size);
1564
UT_LIST_INIT(fil_system->LRU);
1566
fil_system->max_n_open = max_n_open;
1569
/*******************************************************************//**
1570
Opens all log files and system tablespace data files. They stay open until the
1571
database server shutdown. This should be called at a server startup after the
1572
space objects for the log and the system tablespace have been created. The
1573
purpose of this operation is to make sure we never run out of file descriptors
1574
if we need to read from the insert buffer or to write to the log. */
1577
fil_open_log_and_system_tablespace_files(void)
1578
/*==========================================*/
1583
mutex_enter(&fil_system->mutex);
1585
space = UT_LIST_GET_FIRST(fil_system->space_list);
1587
while (space != NULL) {
1588
if (space->purpose != FIL_TABLESPACE || space->id == 0) {
1589
node = UT_LIST_GET_FIRST(space->chain);
1591
while (node != NULL) {
1593
fil_node_open_file(node, fil_system,
1596
if (fil_system->max_n_open
1597
< 10 + fil_system->n_open) {
1599
"InnoDB: Warning: you must"
1600
" raise the value of"
1601
" innodb_open_files in\n"
1602
"InnoDB: my.cnf! Remember that"
1603
" InnoDB keeps all log files"
1605
"InnoDB: tablespace files open"
1606
" for the whole time mysqld is"
1608
"InnoDB: needs to open also"
1609
" some .ibd files if the"
1610
" file-per-table storage\n"
1611
"InnoDB: model is used."
1612
" Current open files %lu,"
1614
" open files %lu.\n",
1615
(ulong) fil_system->n_open,
1616
(ulong) fil_system->max_n_open);
1618
node = UT_LIST_GET_NEXT(chain, node);
1621
space = UT_LIST_GET_NEXT(space_list, space);
1624
mutex_exit(&fil_system->mutex);
1627
/*******************************************************************//**
1628
Closes all open files. There must not be any pending i/o's or not flushed
1629
modifications in the files. */
1632
fil_close_all_files(void)
1633
/*=====================*/
1638
mutex_enter(&fil_system->mutex);
1640
space = UT_LIST_GET_FIRST(fil_system->space_list);
1642
while (space != NULL) {
1643
fil_space_t* prev_space = space;
1645
node = UT_LIST_GET_FIRST(space->chain);
1647
while (node != NULL) {
1649
fil_node_close_file(node, fil_system);
1651
node = UT_LIST_GET_NEXT(chain, node);
1653
space = UT_LIST_GET_NEXT(space_list, space);
1654
fil_space_free(prev_space->id, TRUE);
1657
mutex_exit(&fil_system->mutex);
1660
/*******************************************************************//**
1661
Sets the max tablespace id counter if the given number is bigger than the
1665
fil_set_max_space_id_if_bigger(
1666
/*===========================*/
1667
ulint max_id) /*!< in: maximum known id */
1669
if (max_id >= SRV_LOG_SPACE_FIRST_ID) {
1671
"InnoDB: Fatal error: max tablespace id"
1672
" is too high, %lu\n", (ulong) max_id);
1676
mutex_enter(&fil_system->mutex);
1678
if (fil_system->max_assigned_id < max_id) {
1680
fil_system->max_assigned_id = max_id;
1683
mutex_exit(&fil_system->mutex);
1686
/****************************************************************//**
1687
Writes the flushed lsn and the latest archived log number to the page header
1688
of the first page of a data file of the system tablespace (space 0),
1689
which is uncompressed. */
1692
fil_write_lsn_and_arch_no_to_file(
1693
/*==============================*/
1694
ulint sum_of_sizes, /*!< in: combined size of previous files
1695
in space, in database pages */
1696
ib_uint64_t lsn, /*!< in: lsn to write */
1697
ulint arch_log_no __attribute__((unused)))
1698
/*!< in: archived log number to write */
1703
buf1 = mem_alloc(2 * UNIV_PAGE_SIZE);
1704
buf = ut_align(buf1, UNIV_PAGE_SIZE);
1706
fil_read(TRUE, 0, 0, sum_of_sizes, 0, UNIV_PAGE_SIZE, buf, NULL);
1708
mach_write_to_8(buf + FIL_PAGE_FILE_FLUSH_LSN, lsn);
1710
fil_write(TRUE, 0, 0, sum_of_sizes, 0, UNIV_PAGE_SIZE, buf, NULL);
1717
/****************************************************************//**
1718
Writes the flushed lsn and the latest archived log number to the page
1719
header of the first page of each data file in the system tablespace.
1720
@return DB_SUCCESS or error number */
1723
fil_write_flushed_lsn_to_data_files(
1724
/*================================*/
1725
ib_uint64_t lsn, /*!< in: lsn to write */
1726
ulint arch_log_no) /*!< in: latest archived log
1734
mutex_enter(&fil_system->mutex);
1736
space = UT_LIST_GET_FIRST(fil_system->space_list);
1739
/* We only write the lsn to all existing data files which have
1740
been open during the lifetime of the mysqld process; they are
1741
represented by the space objects in the tablespace memory
1742
cache. Note that all data files in the system tablespace 0 are
1745
if (space->purpose == FIL_TABLESPACE
1746
&& space->id == 0) {
1749
node = UT_LIST_GET_FIRST(space->chain);
1751
mutex_exit(&fil_system->mutex);
1753
err = fil_write_lsn_and_arch_no_to_file(
1754
sum_of_sizes, lsn, arch_log_no);
1755
if (err != DB_SUCCESS) {
1760
mutex_enter(&fil_system->mutex);
1762
sum_of_sizes += node->size;
1763
node = UT_LIST_GET_NEXT(chain, node);
1766
space = UT_LIST_GET_NEXT(space_list, space);
1769
mutex_exit(&fil_system->mutex);
1774
/*******************************************************************//**
1775
Reads the flushed lsn and arch no fields from a data file at database
1779
fil_read_flushed_lsn_and_arch_log_no(
1780
/*=================================*/
1781
os_file_t data_file, /*!< in: open data file */
1782
ibool one_read_already, /*!< in: TRUE if min and max
1783
parameters below already
1784
contain sensible data */
1785
#ifdef UNIV_LOG_ARCHIVE
1786
ulint* min_arch_log_no, /*!< in/out: */
1787
ulint* max_arch_log_no, /*!< in/out: */
1788
#endif /* UNIV_LOG_ARCHIVE */
1789
ib_uint64_t* min_flushed_lsn, /*!< in/out: */
1790
ib_uint64_t* max_flushed_lsn) /*!< in/out: */
1794
ib_uint64_t flushed_lsn;
1796
buf2 = ut_malloc(2 * UNIV_PAGE_SIZE);
1797
/* Align the memory for a possible read from a raw device */
1798
buf = ut_align(buf2, UNIV_PAGE_SIZE);
1800
os_file_read(data_file, buf, 0, 0, UNIV_PAGE_SIZE);
1802
flushed_lsn = mach_read_from_8(buf + FIL_PAGE_FILE_FLUSH_LSN);
1806
if (!one_read_already) {
1807
*min_flushed_lsn = flushed_lsn;
1808
*max_flushed_lsn = flushed_lsn;
1809
#ifdef UNIV_LOG_ARCHIVE
1810
*min_arch_log_no = arch_log_no;
1811
*max_arch_log_no = arch_log_no;
1812
#endif /* UNIV_LOG_ARCHIVE */
1816
if (*min_flushed_lsn > flushed_lsn) {
1817
*min_flushed_lsn = flushed_lsn;
1819
if (*max_flushed_lsn < flushed_lsn) {
1820
*max_flushed_lsn = flushed_lsn;
1822
#ifdef UNIV_LOG_ARCHIVE
1823
if (*min_arch_log_no > arch_log_no) {
1824
*min_arch_log_no = arch_log_no;
1826
if (*max_arch_log_no < arch_log_no) {
1827
*max_arch_log_no = arch_log_no;
1829
#endif /* UNIV_LOG_ARCHIVE */
1832
/*================ SINGLE-TABLE TABLESPACES ==========================*/
1834
#ifndef UNIV_HOTBACKUP
1835
/*******************************************************************//**
1836
Increments the count of pending insert buffer page merges, if space is not
1838
@return TRUE if being deleted, and ibuf merges should be skipped */
1841
fil_inc_pending_ibuf_merges(
1842
/*========================*/
1843
ulint id) /*!< in: space id */
1847
mutex_enter(&fil_system->mutex);
1849
space = fil_space_get_by_id(id);
1851
if (space == NULL) {
1853
"InnoDB: Error: trying to do ibuf merge to a"
1854
" dropped tablespace %lu\n",
1858
if (space == NULL || space->stop_ibuf_merges) {
1859
mutex_exit(&fil_system->mutex);
1864
space->n_pending_ibuf_merges++;
1866
mutex_exit(&fil_system->mutex);
1871
/*******************************************************************//**
1872
Decrements the count of pending insert buffer page merges. */
1875
fil_decr_pending_ibuf_merges(
1876
/*=========================*/
1877
ulint id) /*!< in: space id */
1881
mutex_enter(&fil_system->mutex);
1883
space = fil_space_get_by_id(id);
1885
if (space == NULL) {
1887
"InnoDB: Error: decrementing ibuf merge of a"
1888
" dropped tablespace %lu\n",
1892
if (space != NULL) {
1893
space->n_pending_ibuf_merges--;
1896
mutex_exit(&fil_system->mutex);
1898
#endif /* !UNIV_HOTBACKUP */
1900
/********************************************************//**
1901
Creates the database directory for a table if it does not exist yet. */
1904
fil_create_directory_for_tablename(
1905
/*===============================*/
1906
const char* name) /*!< in: name in the standard
1907
'databasename/tablename' format */
1913
len = strlen(fil_path_to_mysql_datadir);
1914
namend = strchr(name, '/');
1916
path = mem_alloc(len + (namend - name) + 2);
1918
memcpy(path, fil_path_to_mysql_datadir, len);
1920
memcpy(path + len + 1, name, namend - name);
1921
path[len + (namend - name) + 1] = 0;
1923
srv_normalize_path_for_win(path);
1925
ut_a(os_file_create_directory(path, FALSE));
1929
#ifndef UNIV_HOTBACKUP
1930
/********************************************************//**
1931
Writes a log record about an .ibd file create/rename/delete. */
1936
ulint type, /*!< in: MLOG_FILE_CREATE,
1938
MLOG_FILE_DELETE, or
1940
ulint space_id, /*!< in: space id */
1941
ulint log_flags, /*!< in: redo log flags (stored
1942
in the page number field) */
1943
ulint flags, /*!< in: compressed page size
1945
if type==MLOG_FILE_CREATE2, or 0 */
1946
const char* name, /*!< in: table name in the familiar
1947
'databasename/tablename' format, or
1948
the file path in the case of
1950
const char* new_name, /*!< in: if type is MLOG_FILE_RENAME,
1951
the new table name in the
1952
'databasename/tablename' format */
1953
mtr_t* mtr) /*!< in: mini-transaction handle */
1958
log_ptr = mlog_open(mtr, 11 + 2 + 1);
1961
/* Logging in mtr is switched off during crash recovery:
1962
in that case mlog_open returns NULL */
1966
log_ptr = mlog_write_initial_log_record_for_file_op(
1967
type, space_id, log_flags, log_ptr, mtr);
1968
if (type == MLOG_FILE_CREATE2) {
1969
mach_write_to_4(log_ptr, flags);
1972
/* Let us store the strings as null-terminated for easier readability
1975
len = strlen(name) + 1;
1977
mach_write_to_2(log_ptr, len);
1979
mlog_close(mtr, log_ptr);
1981
mlog_catenate_string(mtr, (byte*) name, len);
1983
if (type == MLOG_FILE_RENAME) {
1984
len = strlen(new_name) + 1;
1985
log_ptr = mlog_open(mtr, 2 + len);
1987
mach_write_to_2(log_ptr, len);
1989
mlog_close(mtr, log_ptr);
1991
mlog_catenate_string(mtr, (byte*) new_name, len);
1996
/*******************************************************************//**
1997
Parses the body of a log record written about an .ibd file operation. That is,
1998
the log record part after the standard (type, space id, page no) header of the
2001
If desired, also replays the delete or rename operation if the .ibd file
2002
exists and the space id in it matches. Replays the create operation if a file
2003
at that path does not exist yet. If the database directory for the file to be
2004
created does not exist, then we create the directory, too.
2006
Note that ibbackup --apply-log sets fil_path_to_mysql_datadir to point to the
2007
datadir that we should use in replaying the file operations.
2008
@return end of log record, or NULL if the record was not completely
2009
contained between ptr and end_ptr */
2012
fil_op_log_parse_or_replay(
2013
/*=======================*/
2014
byte* ptr, /*!< in: buffer containing the log record body,
2015
or an initial segment of it, if the record does
2016
not fir completely between ptr and end_ptr */
2017
byte* end_ptr, /*!< in: buffer end */
2018
ulint type, /*!< in: the type of this log record */
2019
ulint space_id, /*!< in: the space id of the tablespace in
2020
question, or 0 if the log record should
2021
only be parsed but not replayed */
2022
ulint log_flags) /*!< in: redo log flags
2023
(stored in the page number parameter) */
2028
const char* new_name = NULL;
2031
if (type == MLOG_FILE_CREATE2) {
2032
if (end_ptr < ptr + 4) {
2037
flags = mach_read_from_4(ptr);
2041
if (end_ptr < ptr + 2) {
2046
name_len = mach_read_from_2(ptr);
2050
if (end_ptr < ptr + name_len) {
2055
name = (const char*) ptr;
2059
if (type == MLOG_FILE_RENAME) {
2060
if (end_ptr < ptr + 2) {
2065
new_name_len = mach_read_from_2(ptr);
2069
if (end_ptr < ptr + new_name_len) {
2074
new_name = (const char*) ptr;
2076
ptr += new_name_len;
2079
/* We managed to parse a full log record body */
2081
printf("Parsed log rec of type %lu space %lu\n"
2082
"name %s\n", type, space_id, name);
2084
if (type == MLOG_FILE_RENAME) {
2085
printf("new name %s\n", new_name);
2093
/* Let us try to perform the file operation, if sensible. Note that
2094
ibbackup has at this stage already read in all space id info to the
2095
fil0fil.c data structures.
2097
NOTE that our algorithm is not guaranteed to work correctly if there
2098
were renames of tables during the backup. See ibbackup code for more
2102
case MLOG_FILE_DELETE:
2103
if (fil_tablespace_exists_in_mem(space_id)) {
2104
ut_a(fil_delete_tablespace(space_id));
2109
case MLOG_FILE_RENAME:
2110
/* We do the rename based on space id, not old file name;
2111
this should guarantee that after the log replay each .ibd file
2112
has the correct name for the latest log sequence number; the
2113
proof is left as an exercise :) */
2115
if (fil_tablespace_exists_in_mem(space_id)) {
2116
/* Create the database directory for the new name, if
2117
it does not exist yet */
2118
fil_create_directory_for_tablename(new_name);
2120
/* Rename the table if there is not yet a tablespace
2121
with the same name */
2123
if (fil_get_space_id_for_table(new_name)
2124
== ULINT_UNDEFINED) {
2125
/* We do not care of the old name, that is
2126
why we pass NULL as the first argument */
2127
if (!fil_rename_tablespace(NULL, space_id,
2136
case MLOG_FILE_CREATE:
2137
case MLOG_FILE_CREATE2:
2138
if (fil_tablespace_exists_in_mem(space_id)) {
2140
} else if (fil_get_space_id_for_table(name)
2141
!= ULINT_UNDEFINED) {
2143
} else if (log_flags & MLOG_FILE_FLAG_TEMP) {
2144
/* Temporary table, do nothing */
2146
/* Create the database directory for name, if it does
2148
fil_create_directory_for_tablename(name);
2150
if (fil_create_new_single_table_tablespace(
2151
space_id, name, FALSE, flags,
2152
FIL_IBD_FILE_INITIAL_SIZE) != DB_SUCCESS) {
2166
/*******************************************************************//**
2167
Deletes a single-table tablespace. The tablespace must be cached in the
2169
@return TRUE if success */
2172
fil_delete_tablespace(
2173
/*==================*/
2174
ulint id) /*!< in: space id */
2184
mutex_enter(&fil_system->mutex);
2186
space = fil_space_get_by_id(id);
2188
if (space != NULL) {
2189
space->stop_ibuf_merges = TRUE;
2191
if (space->n_pending_ibuf_merges == 0) {
2192
mutex_exit(&fil_system->mutex);
2199
ut_print_timestamp(stderr);
2200
fputs(" InnoDB: Warning: trying to"
2201
" delete tablespace ", stderr);
2202
ut_print_filename(stderr, space->name);
2203
fprintf(stderr, ",\n"
2204
"InnoDB: but there are %lu pending"
2205
" ibuf merges on it.\n"
2206
"InnoDB: Loop %lu.\n",
2207
(ulong) space->n_pending_ibuf_merges,
2211
mutex_exit(&fil_system->mutex);
2213
os_thread_sleep(20000);
2216
goto stop_ibuf_merges;
2220
mutex_exit(&fil_system->mutex);
2224
mutex_enter(&fil_system->mutex);
2226
space = fil_space_get_by_id(id);
2228
if (space == NULL) {
2229
ut_print_timestamp(stderr);
2231
" InnoDB: Error: cannot delete tablespace %lu\n"
2232
"InnoDB: because it is not found in the"
2233
" tablespace memory cache.\n",
2236
mutex_exit(&fil_system->mutex);
2242
ut_a(space->n_pending_ibuf_merges == 0);
2244
space->is_being_deleted = TRUE;
2246
ut_a(UT_LIST_GET_LEN(space->chain) == 1);
2247
node = UT_LIST_GET_FIRST(space->chain);
2249
if (space->n_pending_flushes > 0 || node->n_pending > 0) {
2251
ut_print_timestamp(stderr);
2252
fputs(" InnoDB: Warning: trying to"
2253
" delete tablespace ", stderr);
2254
ut_print_filename(stderr, space->name);
2255
fprintf(stderr, ",\n"
2256
"InnoDB: but there are %lu flushes"
2257
" and %lu pending i/o's on it\n"
2258
"InnoDB: Loop %lu.\n",
2259
(ulong) space->n_pending_flushes,
2260
(ulong) node->n_pending,
2263
mutex_exit(&fil_system->mutex);
2264
os_thread_sleep(20000);
2271
path = mem_strdup(space->name);
2273
mutex_exit(&fil_system->mutex);
2274
#ifndef UNIV_HOTBACKUP
2275
/* Invalidate in the buffer pool all pages belonging to the
2276
tablespace. Since we have set space->is_being_deleted = TRUE, readahead
2277
or ibuf merge can no longer read more pages of this tablespace to the
2278
buffer pool. Thus we can clean the tablespace out of the buffer pool
2279
completely and permanently. The flag is_being_deleted also prevents
2280
fil_flush() from being applied to this tablespace. */
2282
buf_LRU_invalidate_tablespace(id);
2284
/* printf("Deleting tablespace %s id %lu\n", space->name, id); */
2286
success = fil_space_free(id, FALSE);
2289
success = os_file_delete(path);
2292
success = os_file_delete_if_exists(path);
2297
#ifndef UNIV_HOTBACKUP
2298
/* Write a log record about the deletion of the .ibd
2299
file, so that ibbackup can replay it in the
2300
--apply-log phase. We use a dummy mtr and the familiar
2301
log write mechanism. */
2304
/* When replaying the operation in ibbackup, do not try
2305
to write any log record */
2308
fil_op_write_log(MLOG_FILE_DELETE, id, 0, 0, path, NULL, &mtr);
2321
#ifndef UNIV_HOTBACKUP
2322
/*******************************************************************//**
2323
Discards a single-table tablespace. The tablespace must be cached in the
2324
memory cache. Discarding is like deleting a tablespace, but
2325
1) we do not drop the table from the data dictionary;
2326
2) we remove all insert buffer entries for the tablespace immediately; in DROP
2327
TABLE they are only removed gradually in the background;
2328
3) when the user does IMPORT TABLESPACE, the tablespace will have the same id
2329
as it originally had.
2330
@return TRUE if success */
2333
fil_discard_tablespace(
2334
/*===================*/
2335
ulint id) /*!< in: space id */
2339
success = fil_delete_tablespace(id);
2343
"InnoDB: Warning: cannot delete tablespace %lu"
2344
" in DISCARD TABLESPACE.\n"
2345
"InnoDB: But let us remove the"
2346
" insert buffer entries for this tablespace.\n",
2350
/* Remove all insert buffer entries for the tablespace */
2352
ibuf_delete_for_discarded_space(id);
2356
#endif /* !UNIV_HOTBACKUP */
2358
/*******************************************************************//**
2359
Renames the memory cache structures of a single-table tablespace.
2360
@return TRUE if success */
2363
fil_rename_tablespace_in_mem(
2364
/*=========================*/
2365
fil_space_t* space, /*!< in: tablespace memory object */
2366
fil_node_t* node, /*!< in: file node of that tablespace */
2367
const char* path) /*!< in: new name */
2369
fil_space_t* space2;
2370
const char* old_name = space->name;
2372
ut_ad(mutex_own(&fil_system->mutex));
2374
space2 = fil_space_get_by_name(old_name);
2375
if (space != space2) {
2376
fputs("InnoDB: Error: cannot find ", stderr);
2377
ut_print_filename(stderr, old_name);
2378
fputs(" in tablespace memory cache\n", stderr);
2383
space2 = fil_space_get_by_name(path);
2384
if (space2 != NULL) {
2385
fputs("InnoDB: Error: ", stderr);
2386
ut_print_filename(stderr, path);
2387
fputs(" is already in tablespace memory cache\n", stderr);
2392
HASH_DELETE(fil_space_t, name_hash, fil_system->name_hash,
2393
ut_fold_string(space->name), space);
2394
mem_free(space->name);
2395
mem_free(node->name);
2397
space->name = mem_strdup(path);
2398
node->name = mem_strdup(path);
2400
HASH_INSERT(fil_space_t, name_hash, fil_system->name_hash,
2401
ut_fold_string(path), space);
2405
/*******************************************************************//**
2406
Allocates a file name for a single-table tablespace. The string must be freed
2407
by caller with mem_free().
2408
@return own: file name */
2413
const char* name, /*!< in: table name or a dir path of a
2415
ibool is_temp) /*!< in: TRUE if it is a dir path */
2417
ulint namelen = strlen(name);
2418
ulint dirlen = strlen(fil_path_to_mysql_datadir);
2419
char* filename = mem_alloc(namelen + dirlen + sizeof "/.ibd");
2422
memcpy(filename, name, namelen);
2423
memcpy(filename + namelen, ".ibd", sizeof ".ibd");
2425
memcpy(filename, fil_path_to_mysql_datadir, dirlen);
2426
filename[dirlen] = '/';
2428
memcpy(filename + dirlen + 1, name, namelen);
2429
memcpy(filename + dirlen + namelen + 1, ".ibd", sizeof ".ibd");
2432
srv_normalize_path_for_win(filename);
2437
/*******************************************************************//**
2438
Renames a single-table tablespace. The tablespace must be cached in the
2439
tablespace memory cache.
2440
@return TRUE if success */
2443
fil_rename_tablespace(
2444
/*==================*/
2445
const char* old_name, /*!< in: old table name in the standard
2446
databasename/tablename format of
2447
InnoDB, or NULL if we do the rename
2448
based on the space id only */
2449
ulint id, /*!< in: space id */
2450
const char* new_name) /*!< in: new table name in the standard
2451
databasename/tablename format
2459
ibool old_name_was_specified = TRUE;
2464
if (old_name == NULL) {
2465
old_name = "(name not specified)";
2466
old_name_was_specified = FALSE;
2472
ut_print_timestamp(stderr);
2473
fputs(" InnoDB: Warning: problems renaming ", stderr);
2474
ut_print_filename(stderr, old_name);
2475
fputs(" to ", stderr);
2476
ut_print_filename(stderr, new_name);
2477
fprintf(stderr, ", %lu iterations\n", (ulong) count);
2480
mutex_enter(&fil_system->mutex);
2482
space = fil_space_get_by_id(id);
2484
if (space == NULL) {
2486
"InnoDB: Error: cannot find space id %lu"
2487
" in the tablespace memory cache\n"
2488
"InnoDB: though the table ", (ulong) id);
2489
ut_print_filename(stderr, old_name);
2490
fputs(" in a rename operation should have that id\n", stderr);
2491
mutex_exit(&fil_system->mutex);
2496
if (count > 25000) {
2497
space->stop_ios = FALSE;
2498
mutex_exit(&fil_system->mutex);
2503
/* We temporarily close the .ibd file because we do not trust that
2504
operating systems can rename an open file. For the closing we have to
2505
wait until there are no pending i/o's or flushes on the file. */
2507
space->stop_ios = TRUE;
2509
ut_a(UT_LIST_GET_LEN(space->chain) == 1);
2510
node = UT_LIST_GET_FIRST(space->chain);
2512
if (node->n_pending > 0 || node->n_pending_flushes > 0) {
2513
/* There are pending i/o's or flushes, sleep for a while and
2516
mutex_exit(&fil_system->mutex);
2518
os_thread_sleep(20000);
2522
} else if (node->modification_counter > node->flush_counter) {
2523
/* Flush the space */
2525
mutex_exit(&fil_system->mutex);
2527
os_thread_sleep(20000);
2533
} else if (node->open) {
2534
/* Close the file */
2536
fil_node_close_file(node, fil_system);
2539
/* Check that the old name in the space is right */
2541
if (old_name_was_specified) {
2542
old_path = fil_make_ibd_name(old_name, FALSE);
2544
ut_a(strcmp(space->name, old_path) == 0);
2545
ut_a(strcmp(node->name, old_path) == 0);
2547
old_path = mem_strdup(space->name);
2550
/* Rename the tablespace and the node in the memory cache */
2551
path = fil_make_ibd_name(new_name, FALSE);
2552
success = fil_rename_tablespace_in_mem(space, node, path);
2555
success = os_file_rename(innodb_file_data_key, old_path, path);
2558
/* We have to revert the changes we made
2559
to the tablespace memory cache */
2561
ut_a(fil_rename_tablespace_in_mem(space, node,
2569
space->stop_ios = FALSE;
2571
mutex_exit(&fil_system->mutex);
2573
#ifndef UNIV_HOTBACKUP
2579
fil_op_write_log(MLOG_FILE_RENAME, id, 0, 0, old_name, new_name,
2587
/*******************************************************************//**
2588
Creates a new single-table tablespace to a database directory of MySQL.
2589
Database directories are under the 'datadir' of MySQL. The datadir is the
2590
directory of a running mysqld program. We can refer to it by simply the
2591
path '.'. Tables created with CREATE TEMPORARY TABLE we place in the temp
2592
dir of the mysqld server.
2593
@return DB_SUCCESS or error code */
2596
fil_create_new_single_table_tablespace(
2597
/*===================================*/
2598
ulint space_id, /*!< in: space id */
2599
const char* tablename, /*!< in: the table name in the usual
2600
databasename/tablename format
2601
of InnoDB, or a dir path to a temp
2603
ibool is_temp, /*!< in: TRUE if a table created with
2604
CREATE TEMPORARY TABLE */
2605
ulint flags, /*!< in: tablespace flags */
2606
ulint size) /*!< in: the initial size of the
2607
tablespace file in pages,
2608
must be >= FIL_IBD_FILE_INITIAL_SIZE */
2619
ut_a(space_id < SRV_LOG_SPACE_FIRST_ID);
2620
ut_a(size >= FIL_IBD_FILE_INITIAL_SIZE);
2621
/* The tablespace flags (FSP_SPACE_FLAGS) should be 0 for
2623
((table->flags & ~(~0 << DICT_TF_BITS)) == DICT_TF_COMPACT) and
2624
ROW_FORMAT=REDUNDANT (table->flags == 0). For any other
2625
format, the tablespace flags should equal
2626
(table->flags & ~(~0 << DICT_TF_BITS)). */
2627
ut_a(flags != DICT_TF_COMPACT);
2628
ut_a(!(flags & (~0UL << DICT_TF_BITS)));
2630
path = fil_make_ibd_name(tablename, is_temp);
2632
file = os_file_create(innodb_file_data_key, path,
2633
OS_FILE_CREATE, OS_FILE_NORMAL,
2634
OS_DATA_FILE, &ret);
2636
ut_print_timestamp(stderr);
2637
fputs(" InnoDB: Error creating file ", stderr);
2638
ut_print_filename(stderr, path);
2639
fputs(".\n", stderr);
2641
/* The following call will print an error message */
2643
err = os_file_get_last_error(TRUE);
2645
if (err == OS_FILE_ALREADY_EXISTS) {
2646
fputs("InnoDB: The file already exists though"
2647
" the corresponding table did not\n"
2648
"InnoDB: exist in the InnoDB data dictionary."
2649
" Have you moved InnoDB\n"
2650
"InnoDB: .ibd files around without using the"
2652
"InnoDB: DISCARD TABLESPACE and"
2653
" IMPORT TABLESPACE, or did\n"
2654
"InnoDB: mysqld crash in the middle of"
2655
" CREATE TABLE? You can\n"
2656
"InnoDB: resolve the problem by"
2657
" removing the file ", stderr);
2658
ut_print_filename(stderr, path);
2660
"InnoDB: under the 'datadir' of MySQL.\n",
2664
return(DB_TABLESPACE_ALREADY_EXISTS);
2667
if (err == OS_FILE_DISK_FULL) {
2670
return(DB_OUT_OF_FILE_SPACE);
2677
ret = os_file_set_size(path, file, size * UNIV_PAGE_SIZE, 0);
2680
err = DB_OUT_OF_FILE_SPACE;
2682
os_file_close(file);
2684
os_file_delete(path);
2690
/* printf("Creating tablespace %s id %lu\n", path, space_id); */
2692
/* We have to write the space id to the file immediately and flush the
2693
file to disk. This is because in crash recovery we must be aware what
2694
tablespaces exist and what are their space id's, so that we can apply
2695
the log records to the right file. It may take quite a while until
2696
buffer pool flush algorithms write anything to the file and flush it to
2697
disk. If we would not write here anything, the file would be filled
2698
with zeros from the call of os_file_set_size(), until a buffer pool
2699
flush would write to it. */
2701
buf2 = ut_malloc(3 * UNIV_PAGE_SIZE);
2702
/* Align the memory for file i/o if we might have O_DIRECT set */
2703
page = ut_align(buf2, UNIV_PAGE_SIZE);
2705
memset(page, '\0', UNIV_PAGE_SIZE);
2707
fsp_header_init_fields(page, space_id, flags);
2708
mach_write_to_4(page + FIL_PAGE_ARCH_LOG_NO_OR_SPACE_ID, space_id);
2710
if (!(flags & DICT_TF_ZSSIZE_MASK)) {
2711
buf_flush_init_for_writing(page, NULL, 0);
2712
ret = os_file_write(path, file, page, 0, 0, UNIV_PAGE_SIZE);
2714
page_zip_des_t page_zip;
2717
zip_size = ((PAGE_ZIP_MIN_SIZE >> 1)
2718
<< ((flags & DICT_TF_ZSSIZE_MASK)
2719
>> DICT_TF_ZSSIZE_SHIFT));
2721
page_zip_set_size(&page_zip, zip_size);
2722
page_zip.data = page + UNIV_PAGE_SIZE;
2725
#endif /* UNIV_DEBUG */
2726
page_zip.m_end = page_zip.m_nonempty =
2727
page_zip.n_blobs = 0;
2728
buf_flush_init_for_writing(page, &page_zip, 0);
2729
ret = os_file_write(path, file, page_zip.data, 0, 0, zip_size);
2735
fputs("InnoDB: Error: could not write the first page"
2736
" to tablespace ", stderr);
2737
ut_print_filename(stderr, path);
2743
ret = os_file_flush(file);
2746
fputs("InnoDB: Error: file flush of tablespace ", stderr);
2747
ut_print_filename(stderr, path);
2748
fputs(" failed\n", stderr);
2753
os_file_close(file);
2755
success = fil_space_create(path, space_id, flags, FIL_TABLESPACE);
2762
fil_node_create(path, size, space_id, FALSE);
2764
#ifndef UNIV_HOTBACKUP
2770
fil_op_write_log(flags
2774
is_temp ? MLOG_FILE_FLAG_TEMP : 0,
2776
tablename, NULL, &mtr);
2785
#ifndef UNIV_HOTBACKUP
2786
/********************************************************************//**
2787
It is possible, though very improbable, that the lsn's in the tablespace to be
2788
imported have risen above the current system lsn, if a lengthy purge, ibuf
2789
merge, or rollback was performed on a backup taken with ibbackup. If that is
2790
the case, reset page lsn's in the file. We assume that mysqld was shut down
2791
after it performed these cleanup operations on the .ibd file, so that it at
2792
the shutdown stamped the latest lsn to the FIL_PAGE_FILE_FLUSH_LSN in the
2793
first page of the .ibd file, and we can determine whether we need to reset the
2794
lsn's just by looking at that flush lsn.
2795
@return TRUE if success */
2798
fil_reset_too_high_lsns(
2799
/*====================*/
2800
const char* name, /*!< in: table name in the
2801
databasename/tablename format */
2802
ib_uint64_t current_lsn) /*!< in: reset lsn's if the lsn stamped
2803
to FIL_PAGE_FILE_FLUSH_LSN in the
2804
first page is too high */
2810
ib_uint64_t flush_lsn;
2812
ib_int64_t file_size;
2816
page_zip_des_t page_zip;
2818
filepath = fil_make_ibd_name(name, FALSE);
2820
file = os_file_create_simple_no_error_handling(
2821
innodb_file_data_key, filepath, OS_FILE_OPEN,
2822
OS_FILE_READ_WRITE, &success);
2824
/* The following call prints an error message */
2825
os_file_get_last_error(TRUE);
2827
ut_print_timestamp(stderr);
2829
fputs(" InnoDB: Error: trying to open a table,"
2831
"InnoDB: open the tablespace file ", stderr);
2832
ut_print_filename(stderr, filepath);
2833
fputs("!\n", stderr);
2839
/* Read the first page of the tablespace */
2841
buf2 = ut_malloc(3 * UNIV_PAGE_SIZE);
2842
/* Align the memory for file i/o if we might have O_DIRECT set */
2843
page = ut_align(buf2, UNIV_PAGE_SIZE);
2845
success = os_file_read(file, page, 0, 0, UNIV_PAGE_SIZE);
2851
/* We have to read the file flush lsn from the header of the file */
2853
flush_lsn = mach_read_from_8(page + FIL_PAGE_FILE_FLUSH_LSN);
2855
if (current_lsn >= flush_lsn) {
2862
space_id = fsp_header_get_space_id(page);
2863
zip_size = fsp_header_get_zip_size(page);
2865
page_zip_des_init(&page_zip);
2866
page_zip_set_size(&page_zip, zip_size);
2868
page_zip.data = page + UNIV_PAGE_SIZE;
2871
ut_print_timestamp(stderr);
2873
" InnoDB: Flush lsn in the tablespace file %lu"
2875
"InnoDB: is %"PRIu64", which exceeds current"
2876
" system lsn %"PRIu64".\n"
2877
"InnoDB: We reset the lsn's in the file ",
2879
flush_lsn, current_lsn);
2880
ut_print_filename(stderr, filepath);
2881
fputs(".\n", stderr);
2883
ut_a(ut_is_2pow(zip_size));
2884
ut_a(zip_size <= UNIV_PAGE_SIZE);
2886
/* Loop through all the pages in the tablespace and reset the lsn and
2887
the page checksum if necessary */
2889
file_size = os_file_get_size_as_iblonglong(file);
2891
for (offset = 0; offset < file_size;
2892
offset += zip_size ? zip_size : UNIV_PAGE_SIZE) {
2893
success = os_file_read(file, page,
2894
(ulint)(offset & 0xFFFFFFFFUL),
2895
(ulint)(offset >> 32),
2896
zip_size ? zip_size : UNIV_PAGE_SIZE);
2901
if (mach_read_from_8(page + FIL_PAGE_LSN) > current_lsn) {
2902
/* We have to reset the lsn */
2905
memcpy(page_zip.data, page, zip_size);
2906
buf_flush_init_for_writing(
2907
page, &page_zip, current_lsn);
2908
success = os_file_write(
2909
filepath, file, page_zip.data,
2910
(ulint) offset & 0xFFFFFFFFUL,
2911
(ulint) (offset >> 32), zip_size);
2913
buf_flush_init_for_writing(
2914
page, NULL, current_lsn);
2915
success = os_file_write(
2916
filepath, file, page,
2917
(ulint)(offset & 0xFFFFFFFFUL),
2918
(ulint)(offset >> 32),
2929
success = os_file_flush(file);
2935
/* We now update the flush_lsn stamp at the start of the file */
2936
success = os_file_read(file, page, 0, 0,
2937
zip_size ? zip_size : UNIV_PAGE_SIZE);
2943
mach_write_to_8(page + FIL_PAGE_FILE_FLUSH_LSN, current_lsn);
2945
success = os_file_write(filepath, file, page, 0, 0,
2946
zip_size ? zip_size : UNIV_PAGE_SIZE);
2951
success = os_file_flush(file);
2953
os_file_close(file);
2960
/********************************************************************//**
2961
Tries to open a single-table tablespace and optionally checks the space id is
2962
right in it. If does not succeed, prints an error message to the .err log. This
2963
function is used to open a tablespace when we start up mysqld, and also in
2965
NOTE that we assume this operation is used either at the database startup
2966
or under the protection of the dictionary mutex, so that two users cannot
2967
race here. This operation does not leave the file associated with the
2968
tablespace open, but closes it after we have looked at the space id in it.
2969
@return TRUE if success */
2972
fil_open_single_table_tablespace(
2973
/*=============================*/
2974
ibool check_space_id, /*!< in: should we check that the space
2975
id in the file is right; we assume
2976
that this function runs much faster
2977
if no check is made, since accessing
2978
the file inode probably is much
2979
faster (the OS caches them) than
2980
accessing the first page of the file */
2981
ulint id, /*!< in: space id */
2982
ulint flags, /*!< in: tablespace flags */
2983
const char* name) /*!< in: table name in the
2984
databasename/tablename format */
2994
filepath = fil_make_ibd_name(name, FALSE);
2996
/* The tablespace flags (FSP_SPACE_FLAGS) should be 0 for
2998
((table->flags & ~(~0 << DICT_TF_BITS)) == DICT_TF_COMPACT) and
2999
ROW_FORMAT=REDUNDANT (table->flags == 0). For any other
3000
format, the tablespace flags should equal
3001
(table->flags & ~(~0 << DICT_TF_BITS)). */
3002
ut_a(flags != DICT_TF_COMPACT);
3003
ut_a(!(flags & (~0UL << DICT_TF_BITS)));
3005
file = os_file_create_simple_no_error_handling(
3006
innodb_file_data_key, filepath, OS_FILE_OPEN,
3007
OS_FILE_READ_ONLY, &success);
3009
/* The following call prints an error message */
3010
os_file_get_last_error(TRUE);
3012
ut_print_timestamp(stderr);
3014
fputs(" InnoDB: Error: trying to open a table,"
3016
"InnoDB: open the tablespace file ", stderr);
3017
ut_print_filename(stderr, filepath);
3019
"InnoDB: Have you moved InnoDB .ibd files around"
3020
" without using the\n"
3021
"InnoDB: commands DISCARD TABLESPACE and"
3022
" IMPORT TABLESPACE?\n"
3023
"InnoDB: It is also possible that this is"
3024
" a temporary table #sql...,\n"
3025
"InnoDB: and MySQL removed the .ibd file for this.\n"
3026
"InnoDB: Please refer to\n"
3027
"InnoDB: " REFMAN "innodb-troubleshooting-datadict.html\n"
3028
"InnoDB: for how to resolve the issue.\n", stderr);
3035
if (!check_space_id) {
3041
/* Read the first page of the tablespace */
3043
buf2 = ut_malloc(2 * UNIV_PAGE_SIZE);
3044
/* Align the memory for file i/o if we might have O_DIRECT set */
3045
page = ut_align(buf2, UNIV_PAGE_SIZE);
3047
success = os_file_read(file, page, 0, 0, UNIV_PAGE_SIZE);
3049
/* We have to read the tablespace id and flags from the file. */
3051
space_id = fsp_header_get_space_id(page);
3052
space_flags = fsp_header_get_flags(page);
3056
if (UNIV_UNLIKELY(space_id != id
3057
|| space_flags != (flags & ~(~0 << DICT_TF_BITS)))) {
3058
ut_print_timestamp(stderr);
3060
fputs(" InnoDB: Error: tablespace id and flags in file ",
3062
ut_print_filename(stderr, filepath);
3063
fprintf(stderr, " are %lu and %lu, but in the InnoDB\n"
3064
"InnoDB: data dictionary they are %lu and %lu.\n"
3065
"InnoDB: Have you moved InnoDB .ibd files"
3066
" around without using the\n"
3067
"InnoDB: commands DISCARD TABLESPACE and"
3068
" IMPORT TABLESPACE?\n"
3069
"InnoDB: Please refer to\n"
3070
"InnoDB: " REFMAN "innodb-troubleshooting-datadict.html\n"
3071
"InnoDB: for how to resolve the issue.\n",
3072
(ulong) space_id, (ulong) space_flags,
3073
(ulong) id, (ulong) flags);
3081
success = fil_space_create(filepath, space_id, flags, FIL_TABLESPACE);
3087
/* We do not measure the size of the file, that is why we pass the 0
3090
fil_node_create(filepath, 0, space_id, FALSE);
3092
os_file_close(file);
3097
#endif /* !UNIV_HOTBACKUP */
3099
#ifdef UNIV_HOTBACKUP
3100
/*******************************************************************//**
3101
Allocates a file name for an old version of a single-table tablespace.
3102
The string must be freed by caller with mem_free()!
3103
@return own: file name */
3106
fil_make_ibbackup_old_name(
3107
/*=======================*/
3108
const char* name) /*!< in: original file name */
3110
static const char suffix[] = "_ibbackup_old_vers_";
3111
ulint len = strlen(name);
3112
char* path = mem_alloc(len + (15 + sizeof suffix));
3114
memcpy(path, name, len);
3115
memcpy(path + len, suffix, (sizeof suffix) - 1);
3116
ut_sprintf_timestamp_without_extra_chars(path + len + sizeof suffix);
3119
#endif /* UNIV_HOTBACKUP */
3121
/********************************************************************//**
3122
Opens an .ibd file and adds the associated single-table tablespace to the
3123
InnoDB fil0fil.c data structures. */
3126
fil_load_single_table_tablespace(
3127
/*=============================*/
3128
const char* dbname, /*!< in: database name */
3129
const char* filename) /*!< in: file name (not a path),
3130
including the .ibd extension */
3142
#ifdef UNIV_HOTBACKUP
3145
filepath = mem_alloc(strlen(dbname) + strlen(filename)
3146
+ strlen(fil_path_to_mysql_datadir) + 3);
3148
sprintf(filepath, "%s/%s/%s", fil_path_to_mysql_datadir, dbname,
3150
srv_normalize_path_for_win(filepath);
3152
# ifndef UNIV_HOTBACKUP
3153
/* If lower_case_table_names is 0 or 2, then MySQL allows database
3154
directory names with upper case letters. On Windows, all table and
3155
database names in InnoDB are internally always in lower case. Put the
3156
file path to lower case, so that we are consistent with InnoDB's
3157
internal data dictionary. */
3159
dict_casedn_str(filepath);
3160
# endif /* !UNIV_HOTBACKUP */
3162
file = os_file_create_simple_no_error_handling(
3163
innodb_file_data_key, filepath, OS_FILE_OPEN,
3164
OS_FILE_READ_ONLY, &success);
3166
/* The following call prints an error message */
3167
os_file_get_last_error(TRUE);
3170
"InnoDB: Error: could not open single-table tablespace"
3173
"InnoDB: We do not continue the crash recovery,"
3174
" because the table may become\n"
3175
"InnoDB: corrupt if we cannot apply the log records"
3176
" in the InnoDB log to it.\n"
3177
"InnoDB: To fix the problem and start mysqld:\n"
3178
"InnoDB: 1) If there is a permission problem"
3179
" in the file and mysqld cannot\n"
3180
"InnoDB: open the file, you should"
3181
" modify the permissions.\n"
3182
"InnoDB: 2) If the table is not needed, or you can"
3183
" restore it from a backup,\n"
3184
"InnoDB: then you can remove the .ibd file,"
3185
" and InnoDB will do a normal\n"
3186
"InnoDB: crash recovery and ignore that table.\n"
3187
"InnoDB: 3) If the file system or the"
3188
" disk is broken, and you cannot remove\n"
3189
"InnoDB: the .ibd file, you can set"
3190
" innodb_force_recovery > 0 in my.cnf\n"
3191
"InnoDB: and force InnoDB to continue crash"
3192
" recovery here.\n", filepath);
3196
if (srv_force_recovery > 0) {
3198
"InnoDB: innodb_force_recovery"
3199
" was set to %lu. Continuing crash recovery\n"
3200
"InnoDB: even though we cannot access"
3201
" the .ibd file of this table.\n",
3202
srv_force_recovery);
3209
success = os_file_get_size(file, &size_low, &size_high);
3212
/* The following call prints an error message */
3213
os_file_get_last_error(TRUE);
3216
"InnoDB: Error: could not measure the size"
3217
" of single-table tablespace file\n"
3219
"InnoDB: We do not continue crash recovery,"
3220
" because the table will become\n"
3221
"InnoDB: corrupt if we cannot apply the log records"
3222
" in the InnoDB log to it.\n"
3223
"InnoDB: To fix the problem and start mysqld:\n"
3224
"InnoDB: 1) If there is a permission problem"
3225
" in the file and mysqld cannot\n"
3226
"InnoDB: access the file, you should"
3227
" modify the permissions.\n"
3228
"InnoDB: 2) If the table is not needed,"
3229
" or you can restore it from a backup,\n"
3230
"InnoDB: then you can remove the .ibd file,"
3231
" and InnoDB will do a normal\n"
3232
"InnoDB: crash recovery and ignore that table.\n"
3233
"InnoDB: 3) If the file system or the disk is broken,"
3234
" and you cannot remove\n"
3235
"InnoDB: the .ibd file, you can set"
3236
" innodb_force_recovery > 0 in my.cnf\n"
3237
"InnoDB: and force InnoDB to continue"
3238
" crash recovery here.\n", filepath);
3240
os_file_close(file);
3243
if (srv_force_recovery > 0) {
3245
"InnoDB: innodb_force_recovery"
3246
" was set to %lu. Continuing crash recovery\n"
3247
"InnoDB: even though we cannot access"
3248
" the .ibd file of this table.\n",
3249
srv_force_recovery);
3256
/* TODO: What to do in other cases where we cannot access an .ibd
3257
file during a crash recovery? */
3259
/* Every .ibd file is created >= 4 pages in size. Smaller files
3262
size = (((ib_int64_t)size_high) << 32) + (ib_int64_t)size_low;
3263
#ifndef UNIV_HOTBACKUP
3264
if (size < FIL_IBD_FILE_INITIAL_SIZE * UNIV_PAGE_SIZE) {
3266
"InnoDB: Error: the size of single-table tablespace"
3268
"InnoDB: is only %lu %lu, should be at least %lu!",
3271
(ulong) size_low, (ulong) (4 * UNIV_PAGE_SIZE));
3272
os_file_close(file);
3278
/* Read the first page of the tablespace if the size big enough */
3280
buf2 = ut_malloc(2 * UNIV_PAGE_SIZE);
3281
/* Align the memory for file i/o if we might have O_DIRECT set */
3282
page = ut_align(buf2, UNIV_PAGE_SIZE);
3284
if (size >= FIL_IBD_FILE_INITIAL_SIZE * UNIV_PAGE_SIZE) {
3285
success = os_file_read(file, page, 0, 0, UNIV_PAGE_SIZE);
3287
/* We have to read the tablespace id from the file */
3289
space_id = fsp_header_get_space_id(page);
3290
flags = fsp_header_get_flags(page);
3292
space_id = ULINT_UNDEFINED;
3296
#ifndef UNIV_HOTBACKUP
3297
if (space_id == ULINT_UNDEFINED || space_id == 0) {
3299
"InnoDB: Error: tablespace id %lu in file %s"
3300
" is not sensible\n",
3306
if (space_id == ULINT_UNDEFINED || space_id == 0) {
3310
"InnoDB: Renaming tablespace %s of id %lu,\n"
3311
"InnoDB: to %s_ibbackup_old_vers_<timestamp>\n"
3312
"InnoDB: because its size %" PRId64 " is too small"
3313
" (< 4 pages 16 kB each),\n"
3314
"InnoDB: or the space id in the file header"
3315
" is not sensible.\n"
3316
"InnoDB: This can happen in an ibbackup run,"
3317
" and is not dangerous.\n",
3318
filepath, space_id, filepath, size);
3319
os_file_close(file);
3321
new_path = fil_make_ibbackup_old_name(filepath);
3322
ut_a(os_file_rename(innodb_file_data_key, filepath, new_path));
3331
/* A backup may contain the same space several times, if the space got
3332
renamed at a sensitive time. Since it is enough to have one version of
3333
the space, we rename the file if a space with the same space id
3334
already exists in the tablespace memory cache. We rather rename the
3335
file than delete it, because if there is a bug, we do not want to
3336
destroy valuable data. */
3338
mutex_enter(&fil_system->mutex);
3340
space = fil_space_get_by_id(space_id);
3346
"InnoDB: Renaming tablespace %s of id %lu,\n"
3347
"InnoDB: to %s_ibbackup_old_vers_<timestamp>\n"
3348
"InnoDB: because space %s with the same id\n"
3349
"InnoDB: was scanned earlier. This can happen"
3350
" if you have renamed tables\n"
3351
"InnoDB: during an ibbackup run.\n",
3352
filepath, space_id, filepath,
3354
os_file_close(file);
3356
new_path = fil_make_ibbackup_old_name(filepath);
3358
mutex_exit(&fil_system->mutex);
3360
ut_a(os_file_rename(innodb_file_data_key, filepath, new_path));
3368
mutex_exit(&fil_system->mutex);
3370
success = fil_space_create(filepath, space_id, flags, FIL_TABLESPACE);
3374
if (srv_force_recovery > 0) {
3376
"InnoDB: innodb_force_recovery"
3377
" was set to %lu. Continuing crash recovery\n"
3378
"InnoDB: even though the tablespace creation"
3379
" of this table failed.\n",
3380
srv_force_recovery);
3387
/* We do not use the size information we have about the file, because
3388
the rounding formula for extents and pages is somewhat complex; we
3389
let fil_node_open() do that task. */
3391
fil_node_create(filepath, 0, space_id, FALSE);
3393
os_file_close(file);
3398
/***********************************************************************//**
3399
A fault-tolerant function that tries to read the next file name in the
3400
directory. We retry 100 times if os_file_readdir_next_file() returns -1. The
3401
idea is to read as much good data as we can and jump over bad data.
3402
@return 0 if ok, -1 if error even after the retries, 1 if at the end
3406
fil_file_readdir_next_file(
3407
/*=======================*/
3408
ulint* err, /*!< out: this is set to DB_ERROR if an error
3409
was encountered, otherwise not changed */
3410
const char* dirname,/*!< in: directory name or path */
3411
os_file_dir_t dir, /*!< in: directory stream */
3412
os_file_stat_t* info) /*!< in/out: buffer where the info is returned */
3417
for (i = 0; i < 100; i++) {
3418
ret = os_file_readdir_next_file(dirname, dir, info);
3426
"InnoDB: Error: os_file_readdir_next_file()"
3428
"InnoDB: directory %s\n"
3429
"InnoDB: Crash recovery may have failed"
3430
" for some .ibd files!\n", dirname);
3438
/********************************************************************//**
3439
At the server startup, if we need crash recovery, scans the database
3440
directories under the MySQL datadir, looking for .ibd files. Those files are
3441
single-table tablespaces. We need to know the space id in each of them so that
3442
we know into which file we should look to check the contents of a page stored
3443
in the doublewrite buffer, also to know where to apply log records where the
3445
@return DB_SUCCESS or error number */
3448
fil_load_single_table_tablespaces(void)
3449
/*===================================*/
3452
char* dbpath = NULL;
3453
ulint dbpath_len = 100;
3455
os_file_dir_t dbdir;
3456
os_file_stat_t dbinfo;
3457
os_file_stat_t fileinfo;
3458
ulint err = DB_SUCCESS;
3460
/* The datadir of MySQL is always the default directory of mysqld */
3462
dir = os_file_opendir(fil_path_to_mysql_datadir, TRUE);
3469
dbpath = mem_alloc(dbpath_len);
3471
/* Scan all directories under the datadir. They are the database
3472
directories of MySQL. */
3474
ret = fil_file_readdir_next_file(&err, fil_path_to_mysql_datadir, dir,
3478
/* printf("Looking at %s in datadir\n", dbinfo.name); */
3480
if (dbinfo.type == OS_FILE_TYPE_FILE
3481
|| dbinfo.type == OS_FILE_TYPE_UNKNOWN) {
3483
goto next_datadir_item;
3486
/* We found a symlink or a directory; try opening it to see
3487
if a symlink is a directory */
3489
len = strlen(fil_path_to_mysql_datadir)
3490
+ strlen (dbinfo.name) + 2;
3491
if (len > dbpath_len) {
3498
dbpath = mem_alloc(dbpath_len);
3500
sprintf(dbpath, "%s/%s", fil_path_to_mysql_datadir,
3502
srv_normalize_path_for_win(dbpath);
3504
dbdir = os_file_opendir(dbpath, FALSE);
3506
if (dbdir != NULL) {
3507
/* printf("Opened dir %s\n", dbinfo.name); */
3509
/* We found a database directory; loop through it,
3510
looking for possible .ibd files in it */
3512
ret = fil_file_readdir_next_file(&err, dbpath, dbdir,
3516
" Looking at file %s\n", fileinfo.name); */
3518
if (fileinfo.type == OS_FILE_TYPE_DIR) {
3520
goto next_file_item;
3523
/* We found a symlink or a file */
3524
if (strlen(fileinfo.name) > 4
3525
&& 0 == strcmp(fileinfo.name
3526
+ strlen(fileinfo.name) - 4,
3528
/* The name ends in .ibd; try opening
3530
fil_load_single_table_tablespace(
3531
dbinfo.name, fileinfo.name);
3534
ret = fil_file_readdir_next_file(&err,
3539
if (0 != os_file_closedir(dbdir)) {
3540
fputs("InnoDB: Warning: could not"
3541
" close database directory ", stderr);
3542
ut_print_filename(stderr, dbpath);
3550
ret = fil_file_readdir_next_file(&err,
3551
fil_path_to_mysql_datadir,
3557
if (0 != os_file_closedir(dir)) {
3559
"InnoDB: Error: could not close MySQL datadir\n");
3567
/*******************************************************************//**
3568
Returns TRUE if a single-table tablespace does not exist in the memory cache,
3569
or is being deleted there.
3570
@return TRUE if does not exist or is being\ deleted */
3573
fil_tablespace_deleted_or_being_deleted_in_mem(
3574
/*===========================================*/
3575
ulint id, /*!< in: space id */
3576
ib_int64_t version)/*!< in: tablespace_version should be this; if
3577
you pass -1 as the value of this, then this
3578
parameter is ignored */
3584
mutex_enter(&fil_system->mutex);
3586
space = fil_space_get_by_id(id);
3588
if (space == NULL || space->is_being_deleted) {
3589
mutex_exit(&fil_system->mutex);
3594
if (version != ((ib_int64_t)-1)
3595
&& space->tablespace_version != version) {
3596
mutex_exit(&fil_system->mutex);
3601
mutex_exit(&fil_system->mutex);
3606
/*******************************************************************//**
3607
Returns TRUE if a single-table tablespace exists in the memory cache.
3608
@return TRUE if exists */
3611
fil_tablespace_exists_in_mem(
3612
/*=========================*/
3613
ulint id) /*!< in: space id */
3619
mutex_enter(&fil_system->mutex);
3621
space = fil_space_get_by_id(id);
3623
mutex_exit(&fil_system->mutex);
3625
return(space != NULL);
3628
/*******************************************************************//**
3629
Returns TRUE if a matching tablespace exists in the InnoDB tablespace memory
3630
cache. Note that if we have not done a crash recovery at the database startup,
3631
there may be many tablespaces which are not yet in the memory cache.
3632
@return TRUE if a matching tablespace exists in the memory cache */
3635
fil_space_for_table_exists_in_mem(
3636
/*==============================*/
3637
ulint id, /*!< in: space id */
3638
const char* name, /*!< in: table name in the standard
3639
'databasename/tablename' format or
3640
the dir path to a temp table */
3641
ibool is_temp, /*!< in: TRUE if created with CREATE
3643
ibool mark_space, /*!< in: in crash recovery, at database
3644
startup we mark all spaces which have
3645
an associated table in the InnoDB
3646
data dictionary, so that
3647
we can print a warning about orphaned
3649
ibool print_error_if_does_not_exist)
3650
/*!< in: print detailed error
3651
information to the .err log if a
3652
matching tablespace is not found from
3655
fil_space_t* namespace;
3661
mutex_enter(&fil_system->mutex);
3663
path = fil_make_ibd_name(name, is_temp);
3665
/* Look if there is a space with the same id */
3667
space = fil_space_get_by_id(id);
3669
/* Look if there is a space with the same name; the name is the
3670
directory path from the datadir to the file */
3672
namespace = fil_space_get_by_name(path);
3673
if (space && space == namespace) {
3681
mutex_exit(&fil_system->mutex);
3686
if (!print_error_if_does_not_exist) {
3689
mutex_exit(&fil_system->mutex);
3694
if (space == NULL) {
3695
if (namespace == NULL) {
3696
ut_print_timestamp(stderr);
3697
fputs(" InnoDB: Error: table ", stderr);
3698
ut_print_filename(stderr, name);
3699
fprintf(stderr, "\n"
3700
"InnoDB: in InnoDB data dictionary"
3701
" has tablespace id %lu,\n"
3702
"InnoDB: but tablespace with that id"
3703
" or name does not exist. Have\n"
3704
"InnoDB: you deleted or moved .ibd files?\n"
3705
"InnoDB: This may also be a table created with"
3706
" CREATE TEMPORARY TABLE\n"
3707
"InnoDB: whose .ibd and .frm files"
3708
" MySQL automatically removed, but the\n"
3709
"InnoDB: table still exists in the"
3710
" InnoDB internal data dictionary.\n",
3713
ut_print_timestamp(stderr);
3714
fputs(" InnoDB: Error: table ", stderr);
3715
ut_print_filename(stderr, name);
3716
fprintf(stderr, "\n"
3717
"InnoDB: in InnoDB data dictionary has"
3718
" tablespace id %lu,\n"
3719
"InnoDB: but a tablespace with that id"
3720
" does not exist. There is\n"
3721
"InnoDB: a tablespace of name %s and id %lu,"
3723
"InnoDB: you deleted or moved .ibd files?\n",
3724
(ulong) id, namespace->name,
3725
(ulong) namespace->id);
3728
fputs("InnoDB: Please refer to\n"
3729
"InnoDB: " REFMAN "innodb-troubleshooting-datadict.html\n"
3730
"InnoDB: for how to resolve the issue.\n", stderr);
3733
mutex_exit(&fil_system->mutex);
3738
if (0 != strcmp(space->name, path)) {
3739
ut_print_timestamp(stderr);
3740
fputs(" InnoDB: Error: table ", stderr);
3741
ut_print_filename(stderr, name);
3742
fprintf(stderr, "\n"
3743
"InnoDB: in InnoDB data dictionary has"
3744
" tablespace id %lu,\n"
3745
"InnoDB: but the tablespace with that id"
3747
"InnoDB: Have you deleted or moved .ibd files?\n",
3748
(ulong) id, space->name);
3750
if (namespace != NULL) {
3751
fputs("InnoDB: There is a tablespace"
3752
" with the right name\n"
3753
"InnoDB: ", stderr);
3754
ut_print_filename(stderr, namespace->name);
3755
fprintf(stderr, ", but its id is %lu.\n",
3756
(ulong) namespace->id);
3763
mutex_exit(&fil_system->mutex);
3768
/*******************************************************************//**
3769
Checks if a single-table tablespace for a given table name exists in the
3770
tablespace memory cache.
3771
@return space id, ULINT_UNDEFINED if not found */
3774
fil_get_space_id_for_table(
3775
/*=======================*/
3776
const char* name) /*!< in: table name in the standard
3777
'databasename/tablename' format */
3779
fil_space_t* namespace;
3780
ulint id = ULINT_UNDEFINED;
3785
mutex_enter(&fil_system->mutex);
3787
path = fil_make_ibd_name(name, FALSE);
3789
/* Look if there is a space with the same name; the name is the
3790
directory path to the file */
3792
namespace = fil_space_get_by_name(path);
3800
mutex_exit(&fil_system->mutex);
3805
/**********************************************************************//**
3806
Tries to extend a data file so that it would accommodate the number of pages
3807
given. The tablespace must be cached in the memory cache. If the space is big
3808
enough already, does nothing.
3809
@return TRUE if success */
3812
fil_extend_space_to_desired_size(
3813
/*=============================*/
3814
ulint* actual_size, /*!< out: size of the space after extension;
3815
if we ran out of disk space this may be lower
3816
than the desired size */
3817
ulint space_id, /*!< in: space id */
3818
ulint size_after_extend)/*!< in: desired size in pages after the
3819
extension; if the current space size is bigger
3820
than this already, the function does nothing */
3827
ulint start_page_no;
3828
ulint file_start_page_no;
3832
ibool success = TRUE;
3834
fil_mutex_enter_and_prepare_for_io(space_id);
3836
space = fil_space_get_by_id(space_id);
3839
if (space->size >= size_after_extend) {
3840
/* Space already big enough */
3842
*actual_size = space->size;
3844
mutex_exit(&fil_system->mutex);
3849
page_size = dict_table_flags_to_zip_size(space->flags);
3851
page_size = UNIV_PAGE_SIZE;
3854
node = UT_LIST_GET_LAST(space->chain);
3856
fil_node_prepare_for_io(node, fil_system, space);
3858
start_page_no = space->size;
3859
file_start_page_no = space->size - node->size;
3861
/* Extend at most 64 pages at a time */
3862
buf_size = ut_min(64, size_after_extend - start_page_no) * page_size;
3863
buf2 = mem_alloc(buf_size + page_size);
3864
buf = ut_align(buf2, page_size);
3866
memset(buf, 0, buf_size);
3868
while (start_page_no < size_after_extend) {
3869
ulint n_pages = ut_min(buf_size / page_size,
3870
size_after_extend - start_page_no);
3872
offset_high = (start_page_no - file_start_page_no)
3873
/ (4096 * ((1024 * 1024) / page_size));
3874
offset_low = ((start_page_no - file_start_page_no)
3875
% (4096 * ((1024 * 1024) / page_size)))
3877
#ifdef UNIV_HOTBACKUP
3878
success = os_file_write(node->name, node->handle, buf,
3879
offset_low, offset_high,
3880
page_size * n_pages);
3882
success = os_aio(OS_FILE_WRITE, OS_AIO_SYNC,
3883
node->name, node->handle, buf,
3884
offset_low, offset_high,
3885
page_size * n_pages,
3889
node->size += n_pages;
3890
space->size += n_pages;
3892
os_has_said_disk_full = FALSE;
3894
/* Let us measure the size of the file to determine
3895
how much we were able to extend it */
3898
(os_file_get_size_as_iblonglong(
3900
/ page_size)) - node->size;
3902
node->size += n_pages;
3903
space->size += n_pages;
3908
start_page_no += n_pages;
3913
fil_node_complete_io(node, fil_system, OS_FILE_WRITE);
3915
*actual_size = space->size;
3917
#ifndef UNIV_HOTBACKUP
3918
if (space_id == 0) {
3919
ulint pages_per_mb = (1024 * 1024) / page_size;
3921
/* Keep the last data file size info up to date, rounded to
3924
srv_data_file_sizes[srv_n_data_files - 1]
3925
= (node->size / pages_per_mb) * pages_per_mb;
3927
#endif /* !UNIV_HOTBACKUP */
3930
printf("Extended %s to %lu, actual size %lu pages\n", space->name,
3931
size_after_extend, *actual_size); */
3932
mutex_exit(&fil_system->mutex);
3934
fil_flush(space_id);
3939
#ifdef UNIV_HOTBACKUP
3940
/********************************************************************//**
3941
Extends all tablespaces to the size stored in the space header. During the
3942
ibbackup --apply-log phase we extended the spaces on-demand so that log records
3943
could be applied, but that may have left spaces still too small compared to
3944
the size stored in the space header. */
3947
fil_extend_tablespaces_to_stored_len(void)
3948
/*======================================*/
3953
ulint size_in_header;
3957
buf = mem_alloc(UNIV_PAGE_SIZE);
3959
mutex_enter(&fil_system->mutex);
3961
space = UT_LIST_GET_FIRST(fil_system->space_list);
3964
ut_a(space->purpose == FIL_TABLESPACE);
3966
mutex_exit(&fil_system->mutex); /* no need to protect with a
3967
mutex, because this is a
3968
single-threaded operation */
3969
error = fil_read(TRUE, space->id,
3970
dict_table_flags_to_zip_size(space->flags),
3971
0, 0, UNIV_PAGE_SIZE, buf, NULL);
3972
ut_a(error == DB_SUCCESS);
3974
size_in_header = fsp_get_size_low(buf);
3976
success = fil_extend_space_to_desired_size(
3977
&actual_size, space->id, size_in_header);
3980
"InnoDB: Error: could not extend the"
3981
" tablespace of %s\n"
3982
"InnoDB: to the size stored in header,"
3984
"InnoDB: size after extension %lu pages\n"
3985
"InnoDB: Check that you have free disk space"
3987
space->name, size_in_header, actual_size);
3991
mutex_enter(&fil_system->mutex);
3993
space = UT_LIST_GET_NEXT(space_list, space);
3996
mutex_exit(&fil_system->mutex);
4002
/*========== RESERVE FREE EXTENTS (for a B-tree split, for example) ===*/
4004
/*******************************************************************//**
4005
Tries to reserve free extents in a file space.
4006
@return TRUE if succeed */
4009
fil_space_reserve_free_extents(
4010
/*===========================*/
4011
ulint id, /*!< in: space id */
4012
ulint n_free_now, /*!< in: number of free extents now */
4013
ulint n_to_reserve) /*!< in: how many one wants to reserve */
4020
mutex_enter(&fil_system->mutex);
4022
space = fil_space_get_by_id(id);
4026
if (space->n_reserved_extents + n_to_reserve > n_free_now) {
4029
space->n_reserved_extents += n_to_reserve;
4033
mutex_exit(&fil_system->mutex);
4038
/*******************************************************************//**
4039
Releases free extents in a file space. */
4042
fil_space_release_free_extents(
4043
/*===========================*/
4044
ulint id, /*!< in: space id */
4045
ulint n_reserved) /*!< in: how many one reserved */
4051
mutex_enter(&fil_system->mutex);
4053
space = fil_space_get_by_id(id);
4056
ut_a(space->n_reserved_extents >= n_reserved);
4058
space->n_reserved_extents -= n_reserved;
4060
mutex_exit(&fil_system->mutex);
4063
/*******************************************************************//**
4064
Gets the number of reserved extents. If the database is silent, this number
4068
fil_space_get_n_reserved_extents(
4069
/*=============================*/
4070
ulint id) /*!< in: space id */
4077
mutex_enter(&fil_system->mutex);
4079
space = fil_space_get_by_id(id);
4083
n = space->n_reserved_extents;
4085
mutex_exit(&fil_system->mutex);
4090
/*============================ FILE I/O ================================*/
4092
/********************************************************************//**
4093
NOTE: you must call fil_mutex_enter_and_prepare_for_io() first!
4095
Prepares a file node for i/o. Opens the file if it is closed. Updates the
4096
pending i/o's field in the node and the system appropriately. Takes the node
4097
off the LRU list if it is in the LRU list. The caller must hold the fil_sys
4101
fil_node_prepare_for_io(
4102
/*====================*/
4103
fil_node_t* node, /*!< in: file node */
4104
fil_system_t* system, /*!< in: tablespace memory cache */
4105
fil_space_t* space) /*!< in: space */
4107
ut_ad(node && system && space);
4108
ut_ad(mutex_own(&(system->mutex)));
4110
if (system->n_open > system->max_n_open + 5) {
4111
ut_print_timestamp(stderr);
4113
" InnoDB: Warning: open files %lu"
4114
" exceeds the limit %lu\n",
4115
(ulong) system->n_open,
4116
(ulong) system->max_n_open);
4119
if (node->open == FALSE) {
4120
/* File is closed: open it */
4121
ut_a(node->n_pending == 0);
4123
fil_node_open_file(node, system, space);
4126
if (node->n_pending == 0 && space->purpose == FIL_TABLESPACE
4127
&& space->id != 0) {
4128
/* The node is in the LRU list, remove it */
4130
ut_a(UT_LIST_GET_LEN(system->LRU) > 0);
4132
UT_LIST_REMOVE(LRU, system->LRU, node);
4138
/********************************************************************//**
4139
Updates the data structures when an i/o operation finishes. Updates the
4140
pending i/o's field in the node appropriately. */
4143
fil_node_complete_io(
4144
/*=================*/
4145
fil_node_t* node, /*!< in: file node */
4146
fil_system_t* system, /*!< in: tablespace memory cache */
4147
ulint type) /*!< in: OS_FILE_WRITE or OS_FILE_READ; marks
4148
the node as modified if
4149
type == OS_FILE_WRITE */
4153
ut_ad(mutex_own(&(system->mutex)));
4155
ut_a(node->n_pending > 0);
4159
if (type == OS_FILE_WRITE) {
4160
system->modification_counter++;
4161
node->modification_counter = system->modification_counter;
4163
if (!node->space->is_in_unflushed_spaces) {
4165
node->space->is_in_unflushed_spaces = TRUE;
4166
UT_LIST_ADD_FIRST(unflushed_spaces,
4167
system->unflushed_spaces,
4172
if (node->n_pending == 0 && node->space->purpose == FIL_TABLESPACE
4173
&& node->space->id != 0) {
4174
/* The node must be put back to the LRU list */
4175
UT_LIST_ADD_FIRST(LRU, system->LRU, node);
4179
/********************************************************************//**
4180
Report information about an invalid page access. */
4183
fil_report_invalid_page_access(
4184
/*===========================*/
4185
ulint block_offset, /*!< in: block offset */
4186
ulint space_id, /*!< in: space id */
4187
const char* space_name, /*!< in: space name */
4188
ulint byte_offset, /*!< in: byte offset */
4189
ulint len, /*!< in: I/O length */
4190
ulint type) /*!< in: I/O type */
4193
"InnoDB: Error: trying to access page number %lu"
4195
"InnoDB: space name %s,\n"
4196
"InnoDB: which is outside the tablespace bounds.\n"
4197
"InnoDB: Byte offset %lu, len %lu, i/o type %lu.\n"
4198
"InnoDB: If you get this error at mysqld startup,"
4199
" please check that\n"
4200
"InnoDB: your my.cnf matches the ibdata files"
4201
" that you have in the\n"
4202
"InnoDB: MySQL server.\n",
4203
(ulong) block_offset, (ulong) space_id, space_name,
4204
(ulong) byte_offset, (ulong) len, (ulong) type);
4207
/********************************************************************//**
4208
Reads or writes data. This operation is asynchronous (aio).
4209
@return DB_SUCCESS, or DB_TABLESPACE_DELETED if we are trying to do
4210
i/o on a tablespace which does not exist */
4215
ulint type, /*!< in: OS_FILE_READ or OS_FILE_WRITE,
4216
ORed to OS_FILE_LOG, if a log i/o
4217
and ORed to OS_AIO_SIMULATED_WAKE_LATER
4218
if simulated aio and we want to post a
4219
batch of i/os; NOTE that a simulated batch
4220
may introduce hidden chances of deadlocks,
4221
because i/os are not actually handled until
4222
all have been posted: use with great
4224
ibool sync, /*!< in: TRUE if synchronous aio is desired */
4225
ulint space_id, /*!< in: space id */
4226
ulint zip_size, /*!< in: compressed page size in bytes;
4227
0 for uncompressed pages */
4228
ulint block_offset, /*!< in: offset in number of blocks */
4229
ulint byte_offset, /*!< in: remainder of offset in bytes; in
4230
aio this must be divisible by the OS block
4232
ulint len, /*!< in: how many bytes to read or write; this
4233
must not cross a file boundary; in aio this
4234
must be a block size multiple */
4235
void* buf, /*!< in/out: buffer where to store read data
4236
or from where to write; in aio this must be
4237
appropriately aligned */
4238
void* message) /*!< in: message for aio handler if non-sync
4239
aio used, else ignored */
4250
is_log = type & OS_FILE_LOG;
4251
type = type & ~OS_FILE_LOG;
4253
wake_later = type & OS_AIO_SIMULATED_WAKE_LATER;
4254
type = type & ~OS_AIO_SIMULATED_WAKE_LATER;
4256
ut_ad(byte_offset < UNIV_PAGE_SIZE);
4257
ut_ad(!zip_size || !byte_offset);
4258
ut_ad(ut_is_2pow(zip_size));
4261
#if (1 << UNIV_PAGE_SIZE_SHIFT) != UNIV_PAGE_SIZE
4262
# error "(1 << UNIV_PAGE_SIZE_SHIFT) != UNIV_PAGE_SIZE"
4264
ut_ad(fil_validate());
4265
#ifndef UNIV_HOTBACKUP
4266
# ifndef UNIV_LOG_DEBUG
4267
/* ibuf bitmap pages must be read in the sync aio mode: */
4268
ut_ad(recv_no_ibuf_operations || (type == OS_FILE_WRITE)
4269
|| !ibuf_bitmap_page(zip_size, block_offset)
4271
ut_ad(!ibuf_inside() || is_log || (type == OS_FILE_WRITE)
4272
|| ibuf_page(space_id, zip_size, block_offset, NULL));
4273
# endif /* UNIV_LOG_DEBUG */
4276
} else if (is_log) {
4278
} else if (type == OS_FILE_READ
4279
&& !recv_no_ibuf_operations
4280
&& ibuf_page(space_id, zip_size, block_offset, NULL)) {
4283
mode = OS_AIO_NORMAL;
4285
#else /* !UNIV_HOTBACKUP */
4288
#endif /* !UNIV_HOTBACKUP */
4290
if (type == OS_FILE_READ) {
4291
srv_data_read+= len;
4292
} else if (type == OS_FILE_WRITE) {
4293
srv_data_written+= len;
4296
/* Reserve the fil_system mutex and make sure that we can open at
4297
least one file while holding it, if the file is not already open */
4299
fil_mutex_enter_and_prepare_for_io(space_id);
4301
space = fil_space_get_by_id(space_id);
4304
mutex_exit(&fil_system->mutex);
4306
ut_print_timestamp(stderr);
4308
" InnoDB: Error: trying to do i/o"
4309
" to a tablespace which does not exist.\n"
4310
"InnoDB: i/o type %lu, space id %lu,"
4311
" page no. %lu, i/o length %lu bytes\n",
4312
(ulong) type, (ulong) space_id, (ulong) block_offset,
4315
return(DB_TABLESPACE_DELETED);
4318
ut_ad((mode != OS_AIO_IBUF) || (space->purpose == FIL_TABLESPACE));
4320
node = UT_LIST_GET_FIRST(space->chain);
4323
if (UNIV_UNLIKELY(node == NULL)) {
4324
fil_report_invalid_page_access(
4325
block_offset, space_id, space->name,
4326
byte_offset, len, type);
4331
if (space->id != 0 && node->size == 0) {
4332
/* We do not know the size of a single-table tablespace
4333
before we open the file */
4338
if (node->size > block_offset) {
4342
block_offset -= node->size;
4343
node = UT_LIST_GET_NEXT(chain, node);
4347
/* Open file if closed */
4348
fil_node_prepare_for_io(node, fil_system, space);
4350
/* Check that at least the start offset is within the bounds of a
4351
single-table tablespace */
4352
if (UNIV_UNLIKELY(node->size <= block_offset)
4353
&& space->id != 0 && space->purpose == FIL_TABLESPACE) {
4355
fil_report_invalid_page_access(
4356
block_offset, space_id, space->name, byte_offset,
4362
/* Now we have made the changes in the data structures of fil_system */
4363
mutex_exit(&fil_system->mutex);
4365
/* Calculate the low 32 bits and the high 32 bits of the file offset */
4368
offset_high = (block_offset >> (32 - UNIV_PAGE_SIZE_SHIFT));
4369
offset_low = ((block_offset << UNIV_PAGE_SIZE_SHIFT)
4370
& 0xFFFFFFFFUL) + byte_offset;
4372
ut_a(node->size - block_offset
4373
>= ((byte_offset + len + (UNIV_PAGE_SIZE - 1))
4376
ulint zip_size_shift;
4378
case 1024: zip_size_shift = 10; break;
4379
case 2048: zip_size_shift = 11; break;
4380
case 4096: zip_size_shift = 12; break;
4381
case 8192: zip_size_shift = 13; break;
4382
case 16384: zip_size_shift = 14; break;
4385
offset_high = block_offset >> (32 - zip_size_shift);
4386
offset_low = (block_offset << zip_size_shift & 0xFFFFFFFFUL)
4388
ut_a(node->size - block_offset
4389
>= (len + (zip_size - 1)) / zip_size);
4394
ut_a(byte_offset % OS_FILE_LOG_BLOCK_SIZE == 0);
4395
ut_a((len % OS_FILE_LOG_BLOCK_SIZE) == 0);
4397
#ifdef UNIV_HOTBACKUP
4398
/* In ibbackup do normal i/o, not aio */
4399
if (type == OS_FILE_READ) {
4400
ret = os_file_read(node->handle, buf, offset_low, offset_high,
4403
ret = os_file_write(node->name, node->handle, buf,
4404
offset_low, offset_high, len);
4407
/* Queue the aio request */
4408
ret = os_aio(type, mode | wake_later, node->name, node->handle, buf,
4409
offset_low, offset_high, len, node, message);
4413
if (mode == OS_AIO_SYNC) {
4414
/* The i/o operation is already completed when we return from
4417
mutex_enter(&fil_system->mutex);
4419
fil_node_complete_io(node, fil_system, type);
4421
mutex_exit(&fil_system->mutex);
4423
ut_ad(fil_validate());
4429
#ifndef UNIV_HOTBACKUP
4430
/**********************************************************************//**
4431
Waits for an aio operation to complete. This function is used to write the
4432
handler for completed requests. The aio array of pending requests is divided
4433
into segments (see os0file.c for more info). The thread specifies which
4434
segment it wants to wait for. */
4439
ulint segment) /*!< in: the number of the segment in the aio
4440
array to wait for */
4443
fil_node_t* fil_node;
4447
ut_ad(fil_validate());
4449
if (srv_use_native_aio) {
4450
srv_set_io_thread_op_info(segment, "native aio handle");
4452
ret = os_aio_windows_handle(segment, 0, &fil_node,
4454
#elif defined(LINUX_NATIVE_AIO)
4455
ret = os_aio_linux_handle(segment, &fil_node,
4458
ret = 0; /* Eliminate compiler warning */
4462
srv_set_io_thread_op_info(segment, "simulated aio handle");
4464
ret = os_aio_simulated_handle(segment, &fil_node,
4470
srv_set_io_thread_op_info(segment, "complete io for fil node");
4472
mutex_enter(&fil_system->mutex);
4474
fil_node_complete_io(fil_node, fil_system, type);
4476
mutex_exit(&fil_system->mutex);
4478
ut_ad(fil_validate());
4480
/* Do the i/o handling */
4481
/* IMPORTANT: since i/o handling for reads will read also the insert
4482
buffer in tablespace 0, you have to be very careful not to introduce
4483
deadlocks in the i/o system. We keep tablespace 0 data files always
4484
open, and use a special i/o thread to serve insert buffer requests. */
4486
if (fil_node->space->purpose == FIL_TABLESPACE) {
4487
srv_set_io_thread_op_info(segment, "complete io for buf page");
4488
buf_page_io_complete(message);
4490
srv_set_io_thread_op_info(segment, "complete io for log");
4491
log_io_complete(message);
4494
#endif /* UNIV_HOTBACKUP */
4496
/**********************************************************************//**
4497
Flushes to disk possible writes cached by the OS. If the space does not exist
4498
or is being dropped, does not do anything. */
4503
ulint space_id) /*!< in: file space id (this can be a group of
4504
log files or a tablespace of the database) */
4509
ib_int64_t old_mod_counter;
4511
mutex_enter(&fil_system->mutex);
4513
space = fil_space_get_by_id(space_id);
4515
if (!space || space->is_being_deleted) {
4516
mutex_exit(&fil_system->mutex);
4521
space->n_pending_flushes++; /*!< prevent dropping of the space while
4523
node = UT_LIST_GET_FIRST(space->chain);
4526
if (node->modification_counter > node->flush_counter) {
4529
/* We want to flush the changes at least up to
4531
old_mod_counter = node->modification_counter;
4533
if (space->purpose == FIL_TABLESPACE) {
4534
fil_n_pending_tablespace_flushes++;
4536
fil_n_pending_log_flushes++;
4537
fil_n_log_flushes++;
4540
if (node->is_raw_disk) {
4546
if (node->n_pending_flushes > 0) {
4547
/* We want to avoid calling os_file_flush() on
4548
the file twice at the same time, because we do
4549
not know what bugs OS's may contain in file
4550
i/o; sleep for a while */
4552
mutex_exit(&fil_system->mutex);
4554
os_thread_sleep(20000);
4556
mutex_enter(&fil_system->mutex);
4558
if (node->flush_counter >= old_mod_counter) {
4567
file = node->handle;
4568
node->n_pending_flushes++;
4570
mutex_exit(&fil_system->mutex);
4572
/* fprintf(stderr, "Flushing to file %s\n",
4575
os_file_flush(file);
4577
mutex_enter(&fil_system->mutex);
4579
node->n_pending_flushes--;
4581
if (node->flush_counter < old_mod_counter) {
4582
node->flush_counter = old_mod_counter;
4584
if (space->is_in_unflushed_spaces
4585
&& fil_space_is_flushed(space)) {
4587
space->is_in_unflushed_spaces = FALSE;
4591
fil_system->unflushed_spaces,
4596
if (space->purpose == FIL_TABLESPACE) {
4597
fil_n_pending_tablespace_flushes--;
4599
fil_n_pending_log_flushes--;
4603
node = UT_LIST_GET_NEXT(chain, node);
4606
space->n_pending_flushes--;
4608
mutex_exit(&fil_system->mutex);
4611
/**********************************************************************//**
4612
Flushes to disk the writes in file spaces of the given type possibly cached by
4616
fil_flush_file_spaces(
4617
/*==================*/
4618
ulint purpose) /*!< in: FIL_TABLESPACE, FIL_LOG */
4625
mutex_enter(&fil_system->mutex);
4627
n_space_ids = UT_LIST_GET_LEN(fil_system->unflushed_spaces);
4628
if (n_space_ids == 0) {
4630
mutex_exit(&fil_system->mutex);
4634
/* Assemble a list of space ids to flush. Previously, we
4635
traversed fil_system->unflushed_spaces and called UT_LIST_GET_NEXT()
4636
on a space that was just removed from the list by fil_flush().
4637
Thus, the space could be dropped and the memory overwritten. */
4638
space_ids = mem_alloc(n_space_ids * sizeof *space_ids);
4642
for (space = UT_LIST_GET_FIRST(fil_system->unflushed_spaces);
4644
space = UT_LIST_GET_NEXT(unflushed_spaces, space)) {
4646
if (space->purpose == purpose && !space->is_being_deleted) {
4648
space_ids[n_space_ids++] = space->id;
4652
mutex_exit(&fil_system->mutex);
4654
/* Flush the spaces. It will not hurt to call fil_flush() on
4655
a non-existing space id. */
4656
for (i = 0; i < n_space_ids; i++) {
4658
fil_flush(space_ids[i]);
4661
mem_free(space_ids);
4664
/******************************************************************//**
4665
Checks the consistency of the tablespace cache.
4666
@return TRUE if ok */
4673
fil_node_t* fil_node;
4677
mutex_enter(&fil_system->mutex);
4679
/* Look for spaces in the hash table */
4681
for (i = 0; i < hash_get_n_cells(fil_system->spaces); i++) {
4683
space = HASH_GET_FIRST(fil_system->spaces, i);
4685
while (space != NULL) {
4686
UT_LIST_VALIDATE(chain, fil_node_t, space->chain,
4687
ut_a(ut_list_node_313->open
4688
|| !ut_list_node_313->n_pending));
4690
fil_node = UT_LIST_GET_FIRST(space->chain);
4692
while (fil_node != NULL) {
4693
if (fil_node->n_pending > 0) {
4694
ut_a(fil_node->open);
4697
if (fil_node->open) {
4700
fil_node = UT_LIST_GET_NEXT(chain, fil_node);
4702
space = HASH_GET_NEXT(hash, space);
4706
ut_a(fil_system->n_open == n_open);
4708
UT_LIST_VALIDATE(LRU, fil_node_t, fil_system->LRU, (void) 0);
4710
fil_node = UT_LIST_GET_FIRST(fil_system->LRU);
4712
while (fil_node != NULL) {
4713
ut_a(fil_node->n_pending == 0);
4714
ut_a(fil_node->open);
4715
ut_a(fil_node->space->purpose == FIL_TABLESPACE);
4716
ut_a(fil_node->space->id != 0);
4718
fil_node = UT_LIST_GET_NEXT(LRU, fil_node);
4721
mutex_exit(&fil_system->mutex);
4726
/********************************************************************//**
4727
Returns TRUE if file address is undefined.
4728
@return TRUE if undefined */
4733
fil_addr_t addr) /*!< in: address */
4735
return(addr.page == FIL_NULL);
4738
/********************************************************************//**
4739
Get the predecessor of a file page.
4740
@return FIL_PAGE_PREV */
4745
const byte* page) /*!< in: file page */
4747
return(mach_read_from_4(page + FIL_PAGE_PREV));
4750
/********************************************************************//**
4751
Get the successor of a file page.
4752
@return FIL_PAGE_NEXT */
4757
const byte* page) /*!< in: file page */
4759
return(mach_read_from_4(page + FIL_PAGE_NEXT));
4762
/*********************************************************************//**
4763
Sets the file page type. */
4768
byte* page, /*!< in/out: file page */
4769
ulint type) /*!< in: type */
4773
mach_write_to_2(page + FIL_PAGE_TYPE, type);
4776
/*********************************************************************//**
4777
Gets the file page type.
4778
@return type; NOTE that if the type has not been written to page, the
4779
return value not defined */
4784
const byte* page) /*!< in: file page */
4788
return(mach_read_from_2(page + FIL_PAGE_TYPE));
4791
/********************************************************************
4792
Initializes the tablespace memory cache. */
4798
#ifndef UNIV_HOTBACKUP
4799
/* The mutex should already have been freed. */
4800
ut_ad(fil_system->mutex.magic_n == 0);
4801
#endif /* !UNIV_HOTBACKUP */
4803
hash_table_free(fil_system->spaces);
4805
hash_table_free(fil_system->name_hash);
4807
ut_a(UT_LIST_GET_LEN(fil_system->LRU) == 0);
4808
ut_a(UT_LIST_GET_LEN(fil_system->unflushed_spaces) == 0);
4809
ut_a(UT_LIST_GET_LEN(fil_system->space_list) == 0);
4811
mem_free(fil_system);
added
removed
plugin/innobase/fil/fil0fil.c
