MDEV-20907 Set innodb_log_files_in_group=1 by default

Historically, InnoDB split the redo log into at least 2 files.
MDEV-12061 allowed the minimum to be innodb_log_files_in_group=1,
but it kept the default at innodb_log_files_in_group=2.

Because performance seems to be slightly better with only one log file,
and because implementing an append-only variant of the log would require
a single file, let us define the default to be 1, and have
innodb_log_file_size=96M, to retain the same default total size.

mysql-test/include/default_mysqld.cnf

 # Copyright (c) 2007, 2013, Oracle and/or its affiliates
-# Copyright (c) 2010, 2013, Monty Program Ab
+# Copyright (c) 2010, 2019, 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
@@ -53,8 +53,8 @@ loose-innodb_lru_scan_depth=      100
 loose-innodb_write_io_threads=    2
 loose-innodb_read_io_threads=     2
 loose-innodb_log_buffer_size=     1M
-loose-innodb_log_file_size=       5M
-loose-innodb_log_files_in_group=  2
+loose-innodb_log_file_size=       10M
+loose-innodb_log_files_in_group=  1
 loose-innodb-stats-persistent=    OFF
 
 slave-net-timeout=120

mysql-test/mysql-test-run.pl

@@ -3348,7 +3348,7 @@ sub mysql_install_db {
   mtr_add_arg($args, "--loose-skip-plugin-$_") for @optional_plugins;
   # starting from 10.0 bootstrap scripts require InnoDB
   mtr_add_arg($args, "--loose-innodb");
-  mtr_add_arg($args, "--loose-innodb-log-file-size=5M");
+  mtr_add_arg($args, "--loose-innodb-log-file-size=10M");
   mtr_add_arg($args, "--disable-sync-frm");
   mtr_add_arg($args, "--tmpdir=%s", "$opt_vardir/tmp/");
   mtr_add_arg($args, "--core-file");

mysql-test/suite/encryption/r/innodb_encrypt_log_corruption.result

@@ -21,7 +21,7 @@ AND support IN ('YES', 'DEFAULT', 'ENABLED');
 ENGINE	SUPPORT	COMMENT	TRANSACTIONS	XA	SAVEPOINTS
 FOUND 1 /InnoDB: Upgrade after a crash is not supported. This redo log was created before MariaDB 10\.2\.2, and it appears corrupted/ in mysqld.1.err
 # empty redo log from before MariaDB 10.2.2
-# restart: --innodb-data-home-dir=MYSQLTEST_VARDIR/tmp/log_corruption --innodb-log-group-home-dir=MYSQLTEST_VARDIR/tmp/log_corruption --innodb-force-recovery=5 --innodb-log-file-size=1m
+# restart: --innodb-data-home-dir=MYSQLTEST_VARDIR/tmp/log_corruption --innodb-log-group-home-dir=MYSQLTEST_VARDIR/tmp/log_corruption --innodb-force-recovery=5 --innodb-log-file-size=2m
 SELECT COUNT(*) FROM INFORMATION_SCHEMA.ENGINES
 WHERE engine = 'innodb'
 AND support IN ('YES', 'DEFAULT', 'ENABLED');
@@ -130,7 +130,7 @@ AND support IN ('YES', 'DEFAULT', 'ENABLED');
 ENGINE	SUPPORT	COMMENT	TRANSACTIONS	XA	SAVEPOINTS
 FOUND 2 /InnoDB: Missing MLOG_FILE_NAME or MLOG_FILE_DELETE before MLOG_CHECKPOINT for tablespace 42/ in mysqld.1.err
 # Empty 10.3 redo log
-# restart: --innodb-data-home-dir=MYSQLTEST_VARDIR/tmp/log_corruption --innodb-log-group-home-dir=MYSQLTEST_VARDIR/tmp/log_corruption --innodb-force-recovery=5 --innodb-log-file-size=1m
+# restart: --innodb-data-home-dir=MYSQLTEST_VARDIR/tmp/log_corruption --innodb-log-group-home-dir=MYSQLTEST_VARDIR/tmp/log_corruption --innodb-force-recovery=5 --innodb-log-file-size=2m
 SELECT COUNT(*) FROM INFORMATION_SCHEMA.ENGINES
 WHERE engine = 'innodb'
 AND support IN ('YES', 'DEFAULT', 'ENABLED');
@@ -138,7 +138,7 @@ COUNT(*)
 1
 FOUND 1 /InnoDB: .* started; log sequence number 121397[09]/ in mysqld.1.err
 # Empty 10.2 redo log
-# restart: --innodb-data-home-dir=MYSQLTEST_VARDIR/tmp/log_corruption --innodb-log-group-home-dir=MYSQLTEST_VARDIR/tmp/log_corruption --innodb-force-recovery=5 --innodb-log-file-size=1m
+# restart: --innodb-data-home-dir=MYSQLTEST_VARDIR/tmp/log_corruption --innodb-log-group-home-dir=MYSQLTEST_VARDIR/tmp/log_corruption --innodb-force-recovery=5 --innodb-log-file-size=2m
 SELECT COUNT(*) FROM INFORMATION_SCHEMA.ENGINES
 WHERE engine = 'innodb'
 AND support IN ('YES', 'DEFAULT', 'ENABLED');
@@ -151,9 +151,8 @@ SELECT COUNT(*) `1` FROM INFORMATION_SCHEMA.ENGINES WHERE engine='innodb'
 AND support IN ('YES', 'DEFAULT', 'ENABLED');
 1
 1
-FOUND 1 /InnoDB: Encrypting redo log/ in mysqld.1.err
+NOT FOUND /InnoDB: Encrypting redo log/ in mysqld.1.err
 # restart
 ib_buffer_pool
 ib_logfile0
-ib_logfile1
 ibdata1

mysql-test/suite/encryption/t/innodb_first_page.test

@@ -9,7 +9,6 @@ let $datadir=`select @@datadir`;
 --source include/shutdown_mysqld.inc
 
 --remove_file $datadir/ib_logfile0
---remove_file $datadir/ib_logfile1
 --remove_file $datadir/ibdata1
 
 --source include/start_mysqld.inc

mysql-test/suite/galera/t/galera_gcache_recover_full_gcache.cnf

@@ -2,7 +2,7 @@
 
 [mysqld.1]
 max_allowed_packet=10M
-innodb_log_file_size=110M
+innodb_log_file_size=220M
 wsrep_provider_options='base_port=@mysqld.1.#galera_port;gcache.recover=yes;pc.ignore_sb=true;gcache.size=10M'
 
 [mysqld.2]

mysql-test/suite/galera/t/galera_gcache_recover_manytrx.cnf

 !include ../galera_2nodes.cnf
 
 [mysqld.1]
-innodb_log_file_size=110M
+innodb_log_file_size=220M
 wsrep_provider_options='base_port=@mysqld.1.#galera_port;gcache.recover=yes;pc.ignore_sb=true;'
 
 [mysqld.2]
-innodb_log_file_size=110M
+innodb_log_file_size=220M
 wsrep_provider_options='base_port=@mysqld.2.#galera_port;gcache.recover=yes;pc.ignore_sb=true;'

mysql-test/suite/galera_sr/t/galera_sr_large_fragment-master.opt

---innodb_log_file_size=1G --binlog-row-event-max-size=100M
+--innodb_log_file_size=2G --binlog-row-event-max-size=100M

mysql-test/suite/innodb/r/log_corruption.result

@@ -21,7 +21,7 @@ AND support IN ('YES', 'DEFAULT', 'ENABLED');
 ENGINE	SUPPORT	COMMENT	TRANSACTIONS	XA	SAVEPOINTS
 FOUND 1 /InnoDB: Upgrade after a crash is not supported. This redo log was created before MariaDB 10\.2\.2, and it appears corrupted/ in mysqld.1.err
 # empty redo log from before MariaDB 10.2.2
-# restart: --innodb-data-home-dir=MYSQLTEST_VARDIR/tmp/log_corruption --innodb-log-group-home-dir=MYSQLTEST_VARDIR/tmp/log_corruption --innodb-force-recovery=5 --innodb-log-file-size=1m
+# restart: --innodb-data-home-dir=MYSQLTEST_VARDIR/tmp/log_corruption --innodb-log-group-home-dir=MYSQLTEST_VARDIR/tmp/log_corruption --innodb-force-recovery=5 --innodb-log-file-size=2m
 SELECT COUNT(*) FROM INFORMATION_SCHEMA.ENGINES
 WHERE engine = 'innodb'
 AND support IN ('YES', 'DEFAULT', 'ENABLED');
@@ -130,7 +130,7 @@ AND support IN ('YES', 'DEFAULT', 'ENABLED');
 ENGINE	SUPPORT	COMMENT	TRANSACTIONS	XA	SAVEPOINTS
 FOUND 2 /InnoDB: Missing MLOG_FILE_NAME or MLOG_FILE_DELETE before MLOG_CHECKPOINT for tablespace 42/ in mysqld.1.err
 # Empty 10.3 redo log
-# restart: --innodb-data-home-dir=MYSQLTEST_VARDIR/tmp/log_corruption --innodb-log-group-home-dir=MYSQLTEST_VARDIR/tmp/log_corruption --innodb-force-recovery=5 --innodb-log-file-size=1m
+# restart: --innodb-data-home-dir=MYSQLTEST_VARDIR/tmp/log_corruption --innodb-log-group-home-dir=MYSQLTEST_VARDIR/tmp/log_corruption --innodb-force-recovery=5 --innodb-log-file-size=2m
 SELECT COUNT(*) FROM INFORMATION_SCHEMA.ENGINES
 WHERE engine = 'innodb'
 AND support IN ('YES', 'DEFAULT', 'ENABLED');
@@ -138,7 +138,7 @@ COUNT(*)
 1
 FOUND 1 /InnoDB: .* started; log sequence number 121397[09]/ in mysqld.1.err
 # Empty 10.2 redo log
-# restart: --innodb-data-home-dir=MYSQLTEST_VARDIR/tmp/log_corruption --innodb-log-group-home-dir=MYSQLTEST_VARDIR/tmp/log_corruption --innodb-force-recovery=5 --innodb-log-file-size=1m
+# restart: --innodb-data-home-dir=MYSQLTEST_VARDIR/tmp/log_corruption --innodb-log-group-home-dir=MYSQLTEST_VARDIR/tmp/log_corruption --innodb-force-recovery=5 --innodb-log-file-size=2m
 SELECT COUNT(*) FROM INFORMATION_SCHEMA.ENGINES
 WHERE engine = 'innodb'
 AND support IN ('YES', 'DEFAULT', 'ENABLED');
@@ -155,6 +155,5 @@ FOUND 1 /InnoDB: Obtaining redo log encryption key version 1 failed/ in mysqld.1
 FOUND 1 /InnoDB: Decrypting checkpoint failed/ in mysqld.1.err
 ib_buffer_pool
 ib_logfile0
-ib_logfile1
 ibdata1
 # restart

mysql-test/suite/innodb/r/log_file_name_debug.result

@@ -5,11 +5,11 @@
 SET GLOBAL DEBUG_DBUG='+d,fil_names_write_bogus';
 CREATE TABLE t1(a INT PRIMARY KEY) ENGINE=InnoDB;
 # Kill the server
-# restart: --debug=d,innodb_log_abort_1 --innodb-log-files-in-group=1 --innodb-log-file-size=4M
+# restart: --debug=d,innodb_log_abort_1 --innodb-log-files-in-group=2 --innodb-log-file-size=4M
 SELECT * FROM t1;
 ERROR 42000: Unknown storage engine 'InnoDB'
 FOUND 1 /InnoDB: Tablespace 4294967280 was not found at .*, but there were no modifications either/ in mysqld.1.err
-# restart: --debug=d,innodb_log_abort_3,ib_log --innodb-log-files-in-group=1 --innodb-log-file-size=4M
+# restart: --debug=d,innodb_log_abort_3,ib_log --innodb-log-files-in-group=2 --innodb-log-file-size=4M
 SELECT * FROM t1;
 ERROR 42000: Unknown storage engine 'InnoDB'
 FOUND 1 /srv_prepare_to_delete_redo_log_files: ib_log: MLOG_CHECKPOINT.* written/ in mysqld.1.err

mysql-test/suite/innodb/r/log_file_size.result

 CREATE TABLE t1(a INT PRIMARY KEY) ENGINE=InnoDB;
-# restart: --innodb-thread-concurrency=1 --innodb-log-file-size=1m --innodb-log-files-in-group=2
+# restart: --innodb-thread-concurrency=1 --innodb-log-file-size=2m
 SELECT * FROM INFORMATION_SCHEMA.ENGINES
 WHERE engine = 'innodb'
 AND support IN ('YES', 'DEFAULT', 'ENABLED');
 ENGINE	SUPPORT	COMMENT	TRANSACTIONS	XA	SAVEPOINTS
-FOUND 1 /InnoDB: Log file .*ib_logfile1 is of different size .* bytes than other log files 0 bytes!/ in mysqld.1.err
-# restart: --innodb-thread-concurrency=1 --innodb-log-file-size=1m --innodb-log-files-in-group=2
+InnoDB	YES	Supports transactions, row-level locking, foreign keys and encryption for tables	YES	YES	YES
+NOT FOUND /InnoDB: Log file .*ib_logfile1 is of different size .* bytes than other log files 0 bytes!/ in mysqld.1.err
+# restart: --innodb-thread-concurrency=1 --innodb-log-file-size=2m
 CHECK TABLE t1;
 Table	Op	Msg_type	Msg_text
 test.t1	check	status	OK
-# restart: --innodb-thread-concurrency=100 --innodb-log-file-size=10M --innodb-log-files-in-group=2
+# restart: --innodb-thread-concurrency=100 --innodb-log-file-size=20M
 BEGIN;
 INSERT INTO t1 VALUES (42);
-# restart: --innodb-log-file-size=6M
+# restart: --innodb-log-file-size=12M
 SELECT * FROM t1;
 a
 INSERT INTO t1 VALUES (42);
@@ -51,11 +52,11 @@ FOUND 1 /InnoDB: innodb_read_only prevents crash recovery/ in mysqld.1.err
 # restart: --debug=d,innodb_log_abort_4
 SELECT * FROM t1;
 ERROR 42000: Unknown storage engine 'InnoDB'
-FOUND 2 /redo log from 3\*[0-9]+ to 2\*[0-9]+ bytes/ in mysqld.1.err
+FOUND 2 /redo log from 3\*[0-9]+ to 1\*[0-9]+ bytes/ in mysqld.1.err
 # restart: --debug=d,innodb_log_abort_5
 SELECT * FROM t1;
 ERROR 42000: Unknown storage engine 'InnoDB'
-FOUND 3 /redo log from 3\*[0-9]+ to 2\*[0-9]+ bytes/ in mysqld.1.err
+FOUND 3 /redo log from 3\*[0-9]+ to 1\*[0-9]+ bytes/ in mysqld.1.err
 # restart: --innodb-read-only
 SELECT * FROM t1;
 ERROR 42000: Unknown storage engine 'InnoDB'
@@ -63,7 +64,7 @@ FOUND 2 /InnoDB: innodb_read_only prevents crash recovery/ in mysqld.1.err
 # restart: --debug=d,innodb_log_abort_6
 SELECT * FROM t1;
 ERROR 42000: Unknown storage engine 'InnoDB'
-FOUND 4 /redo log from 3\*[0-9]+ to 2\*[0-9]+ bytes/ in mysqld.1.err
+FOUND 4 /redo log from 3\*[0-9]+ to 1\*[0-9]+ bytes/ in mysqld.1.err
 # restart: --debug=d,innodb_log_abort_7
 SELECT * FROM t1;
 ERROR 42000: Unknown storage engine 'InnoDB'

mysql-test/suite/innodb/r/row_format_redundant.result

@@ -80,6 +80,5 @@ FOUND 50 /\[ERROR\] InnoDB: Table `test`\.`t1` in InnoDB data dictionary contain
 # restart
 ib_buffer_pool
 ib_logfile0
-ib_logfile1
 ibdata1
 db.opt

mysql-test/suite/innodb/r/table_flags.result

@@ -193,7 +193,6 @@ a
 DROP TABLE tr,tc,td,tz,tp;
 # restart
 ib_logfile0
-ib_logfile1
 ibdata1
 sys_tables.bin
 call mtr.add_suppression("ERROR HY000: Can't create table `test`.`t1`");

mysql-test/suite/innodb/t/doublewrite.test

@@ -458,5 +458,4 @@ eval $check_no_innodb;
 --remove_file $bugdir/ibdata1
 --remove_file $bugdir/ibdata2
 --remove_file $bugdir/ib_logfile0
---remove_file $bugdir/ib_logfile1
 --rmdir $bugdir

mysql-test/suite/innodb/t/log_corruption.test

@@ -90,12 +90,6 @@ print OUT pack("N",$ck).$head.pack("x[12]").$body.pack("Nx[4]",$ck);
 print OUT chr(0) x (759 * 16384);
 close OUT or die;
 
-# Create a dummy second redo log file
-die unless open OUT, ">", "$ENV{bugdir}/ib_logfile1";
-binmode OUT;
-print OUT chr(0) x 1048576;
-close OUT or die;
-
 # Create a redo log from before MariaDB 10.2.2/MySQL 5.7.9
 die unless open OUT, ">", "$ENV{bugdir}/ib_logfile0";
 binmode OUT;
@@ -104,7 +98,7 @@ print OUT pack("x[13]nCNnxxNNx[256]", 0x1286, 12, 0x80c, 0xf0, ~0, ~0);
 print OUT pack("H*x[1240]", "590DBAACFE922582");
 print OUT pack("H*x[5]", "800009440022000c0000000138");
 print OUT pack("H*x[475]H*", "12860cb7809781e80006626f677573", "089C0ADA");
-print OUT chr(0) x 1046016;
+print OUT chr(0) x 2094592;
 close OUT or die;
 EOF
 
@@ -119,7 +113,13 @@ let SEARCH_PATTERN=InnoDB: Upgrade after a crash is not supported. This redo log
 
 --echo # redo log from before MariaDB 10.2.2, with corrupted log checkpoint
 --move_file $bugdir/ib_logfile0 $bugdir/ib_logfile
---copy_file $bugdir/ib_logfile1 $bugdir/ib_logfile0
+perl;
+# Create a dummy second redo log file
+die unless open OUT, ">", "$ENV{bugdir}/ib_logfile0";
+binmode OUT;
+print OUT chr(0) x 1048576;
+close OUT or die;
+EOF
 --source include/start_mysqld.inc
 eval $check_no_innodb;
 --source include/shutdown_mysqld.inc
@@ -154,7 +154,7 @@ die unless seek(OUT, 0x800, 0);
 print OUT pack("NnnNx[496]N", 0x80000944, 12, 12, 0, 0xb2a);
 close OUT or die;
 EOF
---let $restart_parameters= $dirs --innodb-force-recovery=5 --innodb-log-file-size=1m
+--let $restart_parameters= $dirs --innodb-force-recovery=5 --innodb-log-file-size=2m
 --source include/start_mysqld.inc
 SELECT COUNT(*) FROM INFORMATION_SCHEMA.ENGINES
 WHERE engine = 'innodb'
@@ -415,7 +415,7 @@ print OUT pack("NnnNx[496]N", 0x80000944, 12, 12, 1, 0x46c8a2a2);
 close OUT or die;
 EOF
 
---let $restart_parameters= $dirs --innodb-force-recovery=5 --innodb-log-file-size=1m
+--let $restart_parameters= $dirs --innodb-force-recovery=5 --innodb-log-file-size=2m
 --source include/start_mysqld.inc
 SELECT COUNT(*) FROM INFORMATION_SCHEMA.ENGINES
 WHERE engine = 'innodb'

mysql-test/suite/innodb/t/log_file_size.test

@@ -37,7 +37,7 @@ let $check_no_innodb=SELECT * FROM INFORMATION_SCHEMA.ENGINES
 WHERE engine = 'innodb'
 AND support IN ('YES', 'DEFAULT', 'ENABLED');
 
---let $restart_parameters= --innodb-thread-concurrency=1 --innodb-log-file-size=1m --innodb-log-files-in-group=2
+--let $restart_parameters= --innodb-thread-concurrency=1 --innodb-log-file-size=2m
 --source include/start_mysqld.inc
 
 eval $check_no_innodb;
@@ -50,13 +50,13 @@ let SEARCH_PATTERN= InnoDB: Log file .*ib_logfile1 is of different size .* bytes
 --source include/start_mysqld.inc
 CHECK TABLE t1;
 
---let $restart_parameters= --innodb-thread-concurrency=100 --innodb-log-file-size=10M --innodb-log-files-in-group=2
+--let $restart_parameters= --innodb-thread-concurrency=100 --innodb-log-file-size=20M
 --source include/restart_mysqld.inc
 
 BEGIN;
 INSERT INTO t1 VALUES (42);
 
-let $restart_parameters = --innodb-log-file-size=6M;
+let $restart_parameters = --innodb-log-file-size=12M;
 let $shutdown_timeout=0;
 --source include/restart_mysqld.inc
 
@@ -120,14 +120,14 @@ let SEARCH_PATTERN= InnoDB: innodb_read_only prevents crash recovery;
 --source include/restart_mysqld.inc
 --error ER_UNKNOWN_STORAGE_ENGINE
 SELECT * FROM t1;
-let SEARCH_PATTERN= redo log from 3\*[0-9]+ to 2\*[0-9]+ bytes;
+let SEARCH_PATTERN= redo log from 3\*[0-9]+ to 1\*[0-9]+ bytes;
 --source include/search_pattern_in_file.inc
 
 --let $restart_parameters= --debug=d,innodb_log_abort_5
 --source include/restart_mysqld.inc
 --error ER_UNKNOWN_STORAGE_ENGINE
 SELECT * FROM t1;
-let SEARCH_PATTERN= redo log from 3\*[0-9]+ to 2\*[0-9]+ bytes;
+let SEARCH_PATTERN= redo log from 3\*[0-9]+ to 1\*[0-9]+ bytes;
 --source include/search_pattern_in_file.inc
 
 --let $restart_parameters= --innodb-read-only
@@ -142,7 +142,7 @@ let SEARCH_PATTERN= InnoDB: innodb_read_only prevents crash recovery;
 --error ER_UNKNOWN_STORAGE_ENGINE
 SELECT * FROM t1;
 
-let SEARCH_PATTERN= redo log from 3\*[0-9]+ to 2\*[0-9]+ bytes;
+let SEARCH_PATTERN= redo log from 3\*[0-9]+ to 1\*[0-9]+ bytes;
 --source include/search_pattern_in_file.inc
 
 --let $restart_parameters= --debug=d,innodb_log_abort_7
@@ -178,8 +178,7 @@ let SEARCH_PATTERN= InnoDB: Setting log file .*ib_logfile[0-9]+ size to;
 --source include/shutdown_mysqld.inc
 
 # We should have perfectly synced files here.
-# Rename the log files, and trigger an error in recovery.
---move_file $MYSQLD_DATADIR/ib_logfile1 $MYSQLD_DATADIR/ib_logfile1_hidden
+# Trigger an error in recovery.
 
 perl;
 die unless open(FILE, ">$ENV{MYSQLD_DATADIR}/ib_logfile0");
@@ -209,7 +208,6 @@ let SEARCH_PATTERN= InnoDB: Log file .*ib_logfile1 is of different size 1048576
 --source include/search_pattern_in_file.inc
 --remove_file $MYSQLD_DATADIR/ib_logfile1
 --move_file $MYSQLD_DATADIR/ib_logfile0 $MYSQLD_DATADIR/ib_logfile101
---move_file $MYSQLD_DATADIR/ib_logfile1_hidden $MYSQLD_DATADIR/ib_logfile1
 
 --let $restart_parameters= --debug=d,innodb_log_abort_10
 --source include/restart_mysqld.inc

mysql-test/suite/sys_vars/r/sysvars_innodb.result

@@ -1223,7 +1223,7 @@ READ_ONLY	NO
 COMMAND_LINE_ARGUMENT	OPTIONAL
 VARIABLE_NAME	INNODB_LOG_FILES_IN_GROUP
 SESSION_VALUE	NULL
-DEFAULT_VALUE	2
+DEFAULT_VALUE	1
 VARIABLE_SCOPE	GLOBAL
 VARIABLE_TYPE	BIGINT UNSIGNED
 VARIABLE_COMMENT	Number of log files in the log group. InnoDB writes to the files in a circular fashion.
@@ -1235,7 +1235,7 @@ READ_ONLY	YES
 COMMAND_LINE_ARGUMENT	REQUIRED
 VARIABLE_NAME	INNODB_LOG_FILE_SIZE
 SESSION_VALUE	NULL
-DEFAULT_VALUE	50331648
+DEFAULT_VALUE	100663296
 VARIABLE_SCOPE	GLOBAL
 VARIABLE_TYPE	BIGINT UNSIGNED
 VARIABLE_COMMENT	Size of each log file in a log group.
@@ -1682,7 +1682,7 @@ SESSION_VALUE	NULL
 DEFAULT_VALUE	OFF
 VARIABLE_SCOPE	GLOBAL
 VARIABLE_TYPE	BOOLEAN
-VARIABLE_COMMENT	Enable background redo log (ib_logfile0, ib_logfile1...) scrubbing
+VARIABLE_COMMENT	Enable background redo log scrubbing
 NUMERIC_MIN_VALUE	NULL
 NUMERIC_MAX_VALUE	NULL
 NUMERIC_BLOCK_SIZE	NULL

mysql-test/suite/sys_vars/t/innodb_use_native_aio_basic.test

@@ -82,7 +82,7 @@ SELECT @@innodb_use_native_aio = @@GLOBAL.innodb_use_native_aio;
 
 --echo '#---------------------BS_STVARS_035_05----------------------#'
 ################################################################################
-#   Check if innodb_log_file_size can be accessed with and without @@ sign     #
+#   Check if innodb_use_native_aio can be accessed with and without @@ sign    #
 ################################################################################
 
 SELECT COUNT(@@innodb_use_native_aio);

sql-bench/example

@@ -6,9 +6,9 @@ machine="Linux-x64"
 
 # InnoDB tests
 
-./run-all-tests --suffix=-innodb --comments="Engine=InnoDB --innodb_buffer_pool_size=256M --innodb_log_file_size=1000M --innodb_log_buffer_size=16M --innodb_lock_wait_timeout=50 --innodb_flush_log_at_trx_commit=1 --innodb_flush_method=O_DIRECT --innodb_log_files_in_group=2 --skip-innodb-doublewrite" --create-options="ENGINE=InnoDB" --hw="$hw" --optimization="$optimization" --machine="$machine" --log
+./run-all-tests --suffix=-innodb --comments="Engine=InnoDB --innodb_buffer_pool_size=256M --innodb_log_file_size=2000M --innodb_log_buffer_size=16M --innodb_lock_wait_timeout=50 --innodb_flush_log_at_trx_commit=1 --innodb_flush_method=O_DIRECT --innodb_log_files_in_group=1 --skip-innodb-doublewrite" --create-options="ENGINE=InnoDB" --hw="$hw" --optimization="$optimization" --machine="$machine" --log
 
-./run-all-tests --suffix=_fast-innodb --comments="Engine=InnoDB --innodb_buffer_pool_size=256M --innodb_log_file_size=1000M --innodb_log_buffer_size=16M --innodb_lock_wait_timeout=50 --innodb_flush_log_at_trx_commit=1 --innodb_flush_method=O_DIRECT --innodb_log_files_in_group=2 --skip-innodb-doublewrite" --create-options="ENGINE=InnoDB" --hw="$hw" --optimization="$optimization" --machine="$machine" --fast --log
+./run-all-tests --suffix=_fast-innodb --comments="Engine=InnoDB --innodb_buffer_pool_size=256M --innodb_log_file_size=2000M --innodb_log_buffer_size=16M --innodb_lock_wait_timeout=50 --innodb_flush_log_at_trx_commit=1 --innodb_flush_method=O_DIRECT --innodb_log_files_in_group=1 --skip-innodb-doublewrite" --create-options="ENGINE=InnoDB" --hw="$hw" --optimization="$optimization" --machine="$machine" --fast --log
 
 # MyISAM tests
 

storage/innobase/handler/ha_innodb.cc

@@ -19089,14 +19089,14 @@ static MYSQL_SYSVAR_ULONG(log_buffer_size, srv_log_buffer_size,
 static MYSQL_SYSVAR_ULONGLONG(log_file_size, srv_log_file_size,
   PLUGIN_VAR_RQCMDARG | PLUGIN_VAR_READONLY,
   "Size of each log file in a log group.",
-  NULL, NULL, 48 << 20, 1 << 20, log_group_max_size, UNIV_PAGE_SIZE_MAX);
+  NULL, NULL, 96 << 20, 1 << 20, log_group_max_size, UNIV_PAGE_SIZE_MAX);
 /* OS_FILE_LOG_BLOCK_SIZE would be more appropriate than UNIV_PAGE_SIZE_MAX,
 but fil_space_t is being used for the redo log, and it uses data pages. */
 
 static MYSQL_SYSVAR_ULONG(log_files_in_group, srv_n_log_files,
   PLUGIN_VAR_RQCMDARG | PLUGIN_VAR_READONLY,
   "Number of log files in the log group. InnoDB writes to the files in a circular fashion.",
-  NULL, NULL, 2, 1, SRV_N_LOG_FILES_MAX, 0);
+  NULL, NULL, 1, 1, SRV_N_LOG_FILES_MAX, 0);
 
 static MYSQL_SYSVAR_ULONG(log_write_ahead_size, srv_log_write_ahead_size,
   PLUGIN_VAR_RQCMDARG,
@@ -19530,7 +19530,7 @@ static MYSQL_SYSVAR_UINT(encryption_rotation_iops, srv_n_fil_crypt_iops,
 
 static MYSQL_SYSVAR_BOOL(scrub_log, srv_scrub_log,
   PLUGIN_VAR_OPCMDARG | PLUGIN_VAR_READONLY,
-  "Enable background redo log (ib_logfile0, ib_logfile1...) scrubbing",
+  "Enable background redo log scrubbing",
   0, 0, 0);
 
 static MYSQL_SYSVAR_ULONGLONG(scrub_log_speed, innodb_scrub_log_speed,

storage/innobase/mysql-test/storage_engine/col_opt_not_null.opt

---innodb_log_file_size=100M
+--innodb_log_file_size=200M

storage/innobase/mysql-test/storage_engine/col_opt_null.opt

---innodb_log_file_size=100M
+--innodb_log_file_size=200M

storage/innobase/mysql-test/storage_engine/type_blob.opt

---innodb_log_file_size=100M
+--innodb_log_file_size=200M

storage/innobase/mysql-test/storage_engine/type_text.opt

---innodb_log_file_size=100M
+--innodb_log_file_size=200M

win/packaging/ca/CustomAction.cpp

@@ -717,12 +717,12 @@ extern "C" UINT  __stdcall CheckDatabaseProperties (MSIHANDLE hInstall)
 /* 
   Sets Innodb buffer pool size (1/8 of RAM by default), if not already specified
   via command line.
-  Calculates innodb log file size as min(50, innodb buffer pool size/8)
+  Calculates innodb log file size as min(100, innodb buffer pool size/4)
 */
 extern "C" UINT __stdcall PresetDatabaseProperties(MSIHANDLE hInstall)
 {
   unsigned long long InnodbBufferPoolSize= 256;
-  unsigned long long InnodbLogFileSize= 50;
+  unsigned long long InnodbLogFileSize= 100;
   wchar_t buff[MAX_PATH];
   UINT er = ERROR_SUCCESS;
   HRESULT hr= S_OK;
@@ -765,7 +765,7 @@ extern "C" UINT __stdcall PresetDatabaseProperties(MSIHANDLE hInstall)
     swprintf_s(buff, L"%llu",InnodbBufferPoolSize);
     MsiSetPropertyW(hInstall, L"BUFFERPOOLSIZE", buff);
   }
-  InnodbLogFileSize = min(50, InnodbBufferPoolSize);
+  InnodbLogFileSize = min(100, 2 * InnodbBufferPoolSize);
   swprintf_s(buff, L"%llu",InnodbLogFileSize);
   MsiSetPropertyW(hInstall, L"LOGFILESIZE", buff);