1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
|
/*****************************************************************************
Copyright (c) 2012, 2016, Oracle and/or its affiliates. All Rights Reserved.
Copyright (c) 2017, MariaDB Corporation.
This program is free software; you can redistribute it and/or modify it under
the terms of the GNU General Public License as published by the Free Software
Foundation; version 2 of the License.
This program is distributed in the hope that it will be useful, but WITHOUT
ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details.
You should have received a copy of the GNU General Public License along with
this program; if not, write to the Free Software Foundation, Inc.,
51 Franklin Street, Suite 500, Boston, MA 02110-1335 USA
*****************************************************************************/
/**************************************************//**
@file row/row0quiesce.cc
Quiesce a tablespace.
Created 2012-02-08 by Sunny Bains.
*******************************************************/
#include "ha_prototypes.h"
#include "row0quiesce.h"
#include "row0mysql.h"
#include "ibuf0ibuf.h"
#include "srv0start.h"
#include "trx0purge.h"
#include "fsp0sysspace.h"
#ifdef HAVE_MY_AES_H
#include <my_aes.h>
#endif
/*********************************************************************//**
Write the meta data (index user fields) config file.
@return DB_SUCCESS or error code. */
static MY_ATTRIBUTE((nonnull, warn_unused_result))
dberr_t
row_quiesce_write_index_fields(
/*===========================*/
const dict_index_t* index, /*!< in: write the meta data for
this index */
FILE* file, /*!< in: file to write to */
THD* thd) /*!< in/out: session */
{
byte row[sizeof(ib_uint32_t) * 2];
for (ulint i = 0; i < index->n_fields; ++i) {
byte* ptr = row;
const dict_field_t* field = &index->fields[i];
mach_write_to_4(ptr, field->prefix_len);
ptr += sizeof(ib_uint32_t);
mach_write_to_4(ptr, field->fixed_len);
DBUG_EXECUTE_IF("ib_export_io_write_failure_9",
close(fileno(file)););
if (fwrite(row, 1, sizeof(row), file) != sizeof(row)) {
ib_senderrf(
thd, IB_LOG_LEVEL_WARN, ER_IO_WRITE_ERROR,
errno, strerror(errno),
"while writing index fields.");
return(DB_IO_ERROR);
}
/* Include the NUL byte in the length. */
ib_uint32_t len = static_cast<ib_uint32_t>(strlen(field->name) + 1);
ut_a(len > 1);
mach_write_to_4(row, len);
DBUG_EXECUTE_IF("ib_export_io_write_failure_10",
close(fileno(file)););
if (fwrite(row, 1, sizeof(len), file) != sizeof(len)
|| fwrite(field->name, 1, len, file) != len) {
ib_senderrf(
thd, IB_LOG_LEVEL_WARN, ER_IO_WRITE_ERROR,
errno, strerror(errno),
"while writing index column.");
return(DB_IO_ERROR);
}
}
return(DB_SUCCESS);
}
/*********************************************************************//**
Write the meta data config file index information.
@return DB_SUCCESS or error code. */
static MY_ATTRIBUTE((nonnull, warn_unused_result))
dberr_t
row_quiesce_write_indexes(
/*======================*/
const dict_table_t* table, /*!< in: write the meta data for
this table */
FILE* file, /*!< in: file to write to */
THD* thd) /*!< in/out: session */
{
{
byte row[sizeof(ib_uint32_t)];
/* Write the number of indexes in the table. */
mach_write_to_4(row, UT_LIST_GET_LEN(table->indexes));
DBUG_EXECUTE_IF("ib_export_io_write_failure_11",
close(fileno(file)););
if (fwrite(row, 1, sizeof(row), file) != sizeof(row)) {
ib_senderrf(
thd, IB_LOG_LEVEL_WARN, ER_IO_WRITE_ERROR,
errno, strerror(errno),
"while writing index count.");
return(DB_IO_ERROR);
}
}
dberr_t err = DB_SUCCESS;
/* Write the index meta data. */
for (const dict_index_t* index = UT_LIST_GET_FIRST(table->indexes);
index != 0 && err == DB_SUCCESS;
index = UT_LIST_GET_NEXT(indexes, index)) {
byte* ptr;
byte row[sizeof(index_id_t)
+ sizeof(ib_uint32_t) * 8];
ptr = row;
ut_ad(sizeof(index_id_t) == 8);
mach_write_to_8(ptr, index->id);
ptr += sizeof(index_id_t);
mach_write_to_4(ptr, index->space);
ptr += sizeof(ib_uint32_t);
mach_write_to_4(ptr, index->page);
ptr += sizeof(ib_uint32_t);
mach_write_to_4(ptr, index->type);
ptr += sizeof(ib_uint32_t);
mach_write_to_4(ptr, index->trx_id_offset);
ptr += sizeof(ib_uint32_t);
mach_write_to_4(ptr, index->n_user_defined_cols);
ptr += sizeof(ib_uint32_t);
mach_write_to_4(ptr, index->n_uniq);
ptr += sizeof(ib_uint32_t);
mach_write_to_4(ptr, index->n_nullable);
ptr += sizeof(ib_uint32_t);
mach_write_to_4(ptr, index->n_fields);
DBUG_EXECUTE_IF("ib_export_io_write_failure_12",
close(fileno(file)););
if (fwrite(row, 1, sizeof(row), file) != sizeof(row)) {
ib_senderrf(
thd, IB_LOG_LEVEL_WARN, ER_IO_WRITE_ERROR,
errno, strerror(errno),
"while writing index meta-data.");
return(DB_IO_ERROR);
}
/* Write the length of the index name.
NUL byte is included in the length. */
ib_uint32_t len = static_cast<ib_uint32_t>(strlen(index->name) + 1);
ut_a(len > 1);
mach_write_to_4(row, len);
DBUG_EXECUTE_IF("ib_export_io_write_failure_1",
close(fileno(file)););
if (fwrite(row, 1, sizeof(len), file) != sizeof(len)
|| fwrite(index->name, 1, len, file) != len) {
ib_senderrf(
thd, IB_LOG_LEVEL_WARN, ER_IO_WRITE_ERROR,
errno, strerror(errno),
"while writing index name.");
return(DB_IO_ERROR);
}
err = row_quiesce_write_index_fields(index, file, thd);
}
return(err);
}
/*********************************************************************//**
Write the meta data (table columns) config file. Serialise the contents of
dict_col_t structure, along with the column name. All fields are serialized
as ib_uint32_t.
@return DB_SUCCESS or error code. */
static MY_ATTRIBUTE((nonnull, warn_unused_result))
dberr_t
row_quiesce_write_table(
/*====================*/
const dict_table_t* table, /*!< in: write the meta data for
this table */
FILE* file, /*!< in: file to write to */
THD* thd) /*!< in/out: session */
{
dict_col_t* col;
byte row[sizeof(ib_uint32_t) * 7];
col = table->cols;
for (ulint i = 0; i < table->n_cols; ++i, ++col) {
byte* ptr = row;
mach_write_to_4(ptr, col->prtype);
ptr += sizeof(ib_uint32_t);
mach_write_to_4(ptr, col->mtype);
ptr += sizeof(ib_uint32_t);
mach_write_to_4(ptr, col->len);
ptr += sizeof(ib_uint32_t);
mach_write_to_4(ptr, col->mbminmaxlen);
ptr += sizeof(ib_uint32_t);
mach_write_to_4(ptr, col->ind);
ptr += sizeof(ib_uint32_t);
mach_write_to_4(ptr, col->ord_part);
ptr += sizeof(ib_uint32_t);
mach_write_to_4(ptr, col->max_prefix);
DBUG_EXECUTE_IF("ib_export_io_write_failure_2",
close(fileno(file)););
if (fwrite(row, 1, sizeof(row), file) != sizeof(row)) {
ib_senderrf(
thd, IB_LOG_LEVEL_WARN, ER_IO_WRITE_ERROR,
errno, strerror(errno),
"while writing table column data.");
return(DB_IO_ERROR);
}
/* Write out the column name as [len, byte array]. The len
includes the NUL byte. */
ib_uint32_t len;
const char* col_name;
col_name = dict_table_get_col_name(table, dict_col_get_no(col));
/* Include the NUL byte in the length. */
len = static_cast<ib_uint32_t>(strlen(col_name) + 1);
ut_a(len > 1);
mach_write_to_4(row, len);
DBUG_EXECUTE_IF("ib_export_io_write_failure_3",
close(fileno(file)););
if (fwrite(row, 1, sizeof(len), file) != sizeof(len)
|| fwrite(col_name, 1, len, file) != len) {
ib_senderrf(
thd, IB_LOG_LEVEL_WARN, ER_IO_WRITE_ERROR,
errno, strerror(errno),
"while writing column name.");
return(DB_IO_ERROR);
}
}
return(DB_SUCCESS);
}
/*********************************************************************//**
Write the meta data config file header.
@return DB_SUCCESS or error code. */
static MY_ATTRIBUTE((nonnull, warn_unused_result))
dberr_t
row_quiesce_write_header(
/*=====================*/
const dict_table_t* table, /*!< in: write the meta data for
this table */
FILE* file, /*!< in: file to write to */
THD* thd) /*!< in/out: session */
{
byte value[sizeof(ib_uint32_t)];
/* Write the meta-data version number. */
mach_write_to_4(value, IB_EXPORT_CFG_VERSION_V1);
DBUG_EXECUTE_IF("ib_export_io_write_failure_4", close(fileno(file)););
if (fwrite(&value, 1, sizeof(value), file) != sizeof(value)) {
ib_senderrf(
thd, IB_LOG_LEVEL_WARN, ER_IO_WRITE_ERROR,
errno, strerror(errno),
"while writing meta-data version number.");
return(DB_IO_ERROR);
}
/* Write the server hostname. */
ib_uint32_t len;
const char* hostname = server_get_hostname();
/* Play it safe and check for NULL. */
if (hostname == 0) {
static const char NullHostname[] = "Hostname unknown";
ib::warn() << "Unable to determine server hostname.";
hostname = NullHostname;
}
/* The server hostname includes the NUL byte. */
len = static_cast<ib_uint32_t>(strlen(hostname) + 1);
mach_write_to_4(value, len);
DBUG_EXECUTE_IF("ib_export_io_write_failure_5", close(fileno(file)););
if (fwrite(&value, 1, sizeof(value), file) != sizeof(value)
|| fwrite(hostname, 1, len, file) != len) {
ib_senderrf(
thd, IB_LOG_LEVEL_WARN, ER_IO_WRITE_ERROR,
errno, strerror(errno),
"while writing hostname.");
return(DB_IO_ERROR);
}
/* The table name includes the NUL byte. */
ut_a(table->name.m_name != NULL);
len = static_cast<ib_uint32_t>(strlen(table->name.m_name) + 1);
/* Write the table name. */
mach_write_to_4(value, len);
DBUG_EXECUTE_IF("ib_export_io_write_failure_6", close(fileno(file)););
if (fwrite(&value, 1, sizeof(value), file) != sizeof(value)
|| fwrite(table->name.m_name, 1, len, file) != len) {
ib_senderrf(
thd, IB_LOG_LEVEL_WARN, ER_IO_WRITE_ERROR,
errno, strerror(errno),
"while writing table name.");
return(DB_IO_ERROR);
}
byte row[sizeof(ib_uint32_t) * 3];
/* Write the next autoinc value. */
mach_write_to_8(row, table->autoinc);
DBUG_EXECUTE_IF("ib_export_io_write_failure_7", close(fileno(file)););
if (fwrite(row, 1, sizeof(ib_uint64_t), file) != sizeof(ib_uint64_t)) {
ib_senderrf(
thd, IB_LOG_LEVEL_WARN, ER_IO_WRITE_ERROR,
errno, strerror(errno),
"while writing table autoinc value.");
return(DB_IO_ERROR);
}
byte* ptr = row;
/* Write the system page size. */
mach_write_to_4(ptr, UNIV_PAGE_SIZE);
ptr += sizeof(ib_uint32_t);
/* Write the table->flags. */
mach_write_to_4(ptr, table->flags);
ptr += sizeof(ib_uint32_t);
/* Write the number of columns in the table. */
mach_write_to_4(ptr, table->n_cols);
DBUG_EXECUTE_IF("ib_export_io_write_failure_8", close(fileno(file)););
if (fwrite(row, 1, sizeof(row), file) != sizeof(row)) {
ib_senderrf(
thd, IB_LOG_LEVEL_WARN, ER_IO_WRITE_ERROR,
errno, strerror(errno),
"while writing table meta-data.");
return(DB_IO_ERROR);
}
return(DB_SUCCESS);
}
/*********************************************************************//**
Write the table meta data after quiesce.
@return DB_SUCCESS or error code */
static MY_ATTRIBUTE((nonnull, warn_unused_result))
dberr_t
row_quiesce_write_cfg(
/*==================*/
dict_table_t* table, /*!< in: write the meta data for
this table */
THD* thd) /*!< in/out: session */
{
dberr_t err;
char name[OS_FILE_MAX_PATH];
srv_get_meta_data_filename(table, name, sizeof(name));
ib::info() << "Writing table metadata to '" << name << "'";
FILE* file = fopen(name, "w+b");
if (file == NULL) {
ib_errf(thd, IB_LOG_LEVEL_WARN, ER_CANT_CREATE_FILE,
name, errno, strerror(errno));
err = DB_IO_ERROR;
} else {
err = row_quiesce_write_header(table, file, thd);
if (err == DB_SUCCESS) {
err = row_quiesce_write_table(table, file, thd);
}
if (err == DB_SUCCESS) {
err = row_quiesce_write_indexes(table, file, thd);
}
if (fflush(file) != 0) {
char msg[BUFSIZ];
snprintf(msg, sizeof(msg), "%s flush() failed", name);
ib_senderrf(
thd, IB_LOG_LEVEL_WARN, ER_IO_WRITE_ERROR,
errno, strerror(errno), msg);
}
if (fclose(file) != 0) {
char msg[BUFSIZ];
snprintf(msg, sizeof(msg), "%s flose() failed", name);
ib_senderrf(
thd, IB_LOG_LEVEL_WARN, ER_IO_WRITE_ERROR,
errno, strerror(errno), msg);
}
}
return(err);
}
/*********************************************************************//**
Check whether a table has an FTS index defined on it.
@return true if an FTS index exists on the table */
static
bool
row_quiesce_table_has_fts_index(
/*============================*/
const dict_table_t* table) /*!< in: quiesce this table */
{
bool exists = false;
dict_mutex_enter_for_mysql();
for (const dict_index_t* index = UT_LIST_GET_FIRST(table->indexes);
index != 0;
index = UT_LIST_GET_NEXT(indexes, index)) {
if (index->type & DICT_FTS) {
exists = true;
break;
}
}
dict_mutex_exit_for_mysql();
return(exists);
}
/*********************************************************************//**
Quiesce the tablespace that the table resides in. */
void
row_quiesce_table_start(
/*====================*/
dict_table_t* table, /*!< in: quiesce this table */
trx_t* trx) /*!< in/out: transaction/session */
{
ut_a(trx->mysql_thd != 0);
ut_a(srv_n_purge_threads > 0);
ut_ad(!srv_read_only_mode);
ut_a(trx->mysql_thd != 0);
ut_ad(fil_space_get(table->space) != NULL);
ib::info() << "Sync to disk of " << table->name << " started.";
if (trx_purge_state() != PURGE_STATE_DISABLED) {
trx_purge_stop();
}
for (ulint count = 0;
ibuf_merge_space(table->space) != 0
&& !trx_is_interrupted(trx);
++count) {
if (!(count % 20)) {
ib::info() << "Merging change buffer entries for "
<< table->name;
}
}
if (!trx_is_interrupted(trx)) {
{
FlushObserver observer(table->space, trx, NULL);
buf_LRU_flush_or_remove_pages(table->space, &observer);
}
if (trx_is_interrupted(trx)) {
ib::warn() << "Quiesce aborted!";
} else if (row_quiesce_write_cfg(table, trx->mysql_thd)
!= DB_SUCCESS) {
ib::warn() << "There was an error writing to the"
" meta data file";
} else {
ib::info() << "Table " << table->name
<< " flushed to disk";
}
} else {
ib::warn() << "Quiesce aborted!";
}
dberr_t err = row_quiesce_set_state(table, QUIESCE_COMPLETE, trx);
ut_a(err == DB_SUCCESS);
}
/*********************************************************************//**
Cleanup after table quiesce. */
void
row_quiesce_table_complete(
/*=======================*/
dict_table_t* table, /*!< in: quiesce this table */
trx_t* trx) /*!< in/out: transaction/session */
{
ulint count = 0;
ut_a(trx->mysql_thd != 0);
/* We need to wait for the operation to complete if the
transaction has been killed. */
while (table->quiesce != QUIESCE_COMPLETE) {
/* Print a warning after every minute. */
if (!(count % 60)) {
ib::warn() << "Waiting for quiesce of " << table->name
<< " to complete";
}
/* Sleep for a second. */
os_thread_sleep(1000000);
++count;
}
if (!opt_bootstrap) {
/* Remove the .cfg file now that the user has resumed
normal operations. Otherwise it will cause problems when
the user tries to drop the database (remove directory). */
char cfg_name[OS_FILE_MAX_PATH];
srv_get_meta_data_filename(table, cfg_name, sizeof(cfg_name));
os_file_delete_if_exists(innodb_data_file_key, cfg_name, NULL);
ib::info() << "Deleting the meta-data file '" << cfg_name << "'";
}
if (trx_purge_state() != PURGE_STATE_DISABLED) {
trx_purge_run();
}
dberr_t err = row_quiesce_set_state(table, QUIESCE_NONE, trx);
ut_a(err == DB_SUCCESS);
}
/*********************************************************************//**
Set a table's quiesce state.
@return DB_SUCCESS or error code. */
dberr_t
row_quiesce_set_state(
/*==================*/
dict_table_t* table, /*!< in: quiesce this table */
ib_quiesce_t state, /*!< in: quiesce state to set */
trx_t* trx) /*!< in/out: transaction */
{
ut_a(srv_n_purge_threads > 0);
if (srv_read_only_mode) {
ib_senderrf(trx->mysql_thd,
IB_LOG_LEVEL_WARN, ER_READ_ONLY_MODE);
return(DB_UNSUPPORTED);
} else if (dict_table_is_temporary(table)) {
ib_senderrf(trx->mysql_thd, IB_LOG_LEVEL_WARN,
ER_CANNOT_DISCARD_TEMPORARY_TABLE);
return(DB_UNSUPPORTED);
} else if (table->space == srv_sys_space.space_id()) {
char table_name[MAX_FULL_NAME_LEN + 1];
innobase_format_name(
table_name, sizeof(table_name),
table->name.m_name);
ib_senderrf(trx->mysql_thd, IB_LOG_LEVEL_WARN,
ER_TABLE_IN_SYSTEM_TABLESPACE, table_name);
return(DB_UNSUPPORTED);
} else if (row_quiesce_table_has_fts_index(table)) {
ib_senderrf(trx->mysql_thd, IB_LOG_LEVEL_WARN,
ER_NOT_SUPPORTED_YET,
"FLUSH TABLES on tables that have an FTS index."
" FTS auxiliary tables will not be flushed.");
} else if (DICT_TF2_FLAG_IS_SET(table, DICT_TF2_FTS_HAS_DOC_ID)) {
/* If this flag is set then the table may not have any active
FTS indexes but it will still have the auxiliary tables. */
ib_senderrf(trx->mysql_thd, IB_LOG_LEVEL_WARN,
ER_NOT_SUPPORTED_YET,
"FLUSH TABLES on a table that had an FTS index,"
" created on a hidden column, the"
" auxiliary tables haven't been dropped as yet."
" FTS auxiliary tables will not be flushed.");
}
row_mysql_lock_data_dictionary(trx);
dict_table_x_lock_indexes(table);
switch (state) {
case QUIESCE_START:
break;
case QUIESCE_COMPLETE:
ut_a(table->quiesce == QUIESCE_START);
break;
case QUIESCE_NONE:
ut_a(table->quiesce == QUIESCE_COMPLETE);
break;
}
table->quiesce = state;
dict_table_x_unlock_indexes(table);
row_mysql_unlock_data_dictionary(trx);
return(DB_SUCCESS);
}
|