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WL#3602

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Post review changes
the --read-only option is not enforced for the slave thread in replication, or for the SUPER user.
This commit is contained in:
malff/marcsql@weblab.(none)
2006-11-30 18:43:33 -07:00
parent bafbe2c7c7
commit e1bdc140d1
5 changed files with 229 additions and 2 deletions
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113
mysql-test/r/rpl_read_only.result Normal file
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@@ -0,0 +1,113 @@
stop slave;
drop table if exists t1,t2,t3,t4,t5,t6,t7,t8,t9;
reset master;
reset slave;
drop table if exists t1,t2,t3,t4,t5,t6,t7,t8,t9;
start slave;
create table t1(a int) engine=InnoDB;
create table t2(a int) engine=MyISAM;
insert into t1 values(1001);
insert into t2 values(2001);
set global read_only=1;
select @@read_only;
@@read_only
1
select * from t1;
a
1001
select * from t2;
a
2001
select @@read_only;
@@read_only
0
select * from t1;
a
1001
select * from t2;
a
2001
set global read_only=0;
BEGIN;
insert into t1 values(1002);
insert into t2 values(2002);
BEGIN;
insert into t1 values(1003);
insert into t2 values(2003);
set global read_only=1;
COMMIT;
COMMIT;
ERROR HY000: The MySQL server is running with the --read-only option so it cannot execute this statement
set global read_only=0;
insert into t1 values(1004);
insert into t2 values(2004);
select * from t1;
a
1001
1002
1004
select * from t2;
a
2001
2002
2003
2004
select * from t1;
a
1001
1002
1004
select * from t2;
a
2001
2002
2003
2004
set global read_only=1;
select @@read_only;
@@read_only
1
show create table t1;
Table Create Table
t1 CREATE TABLE `t1` (
`a` int(11) DEFAULT NULL
) ENGINE=InnoDB DEFAULT CHARSET=latin1
show create table t2;
Table Create Table
t2 CREATE TABLE `t2` (
`a` int(11) DEFAULT NULL
) ENGINE=MyISAM DEFAULT CHARSET=latin1
insert into t1 values(1005);
insert into t2 values(2005);
select * from t1;
a
1001
1002
1004
1005
select * from t2;
a
2001
2002
2003
2004
2005
select * from t1;
a
1001
1002
1004
1005
select * from t2;
a
2001
2002
2003
2004
2005
insert into t1 values(1006);
ERROR HY000: The MySQL server is running with the --read-only option so it cannot execute this statement
insert into t2 values(2006);
ERROR HY000: The MySQL server is running with the --read-only option so it cannot execute this statement
drop table t1;
drop table t2;

1
mysql-test/t/rpl_read_only-slave.opt Normal file
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@@ -0,0 +1 @@
--innodb

105
mysql-test/t/rpl_read_only.test Normal file
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@@ -0,0 +1,105 @@
# Test case for BUG #11733
-- source include/master-slave.inc
-- source include/have_innodb.inc
# Setting the master readonly :
# - the variable @@readonly is not replicated on the slave
connect (master2,127.0.0.1,test,,test,$MASTER_MYPORT,);
connect (slave2,127.0.0.1,test,,test,$SLAVE_MYPORT,);
connection master1;
create table t1(a int) engine=InnoDB;
create table t2(a int) engine=MyISAM;
insert into t1 values(1001);
insert into t2 values(2001);
connection master;
set global read_only=1;
connection master1;
select @@read_only;
select * from t1;
select * from t2;
sync_slave_with_master;
select @@read_only;
select * from t1;
select * from t2;
# - replication of transactions
connection master;
set global read_only=0;
connection master1;
BEGIN;
insert into t1 values(1002);
insert into t2 values(2002);
connection master2;
BEGIN;
insert into t1 values(1003);
insert into t2 values(2003);
connection master;
set global read_only=1;
connection master1;
## works even with read_only=1, because master1 is root
COMMIT;
connection master2;
--error ER_OPTION_PREVENTS_STATEMENT
COMMIT;
connection master;
set global read_only=0;
connection master1;
insert into t1 values(1004);
insert into t2 values(2004);
select * from t1;
select * from t2;
sync_slave_with_master;
select * from t1;
select * from t2;
# Setting the slave readonly : replication will pass
#
connection slave1;
set global read_only=1;
connection slave;
select @@read_only;
# Make sure the replicated table is also transactional
show create table t1;
# Make sure the replicated table is not transactional
show create table t2;
connection master;
insert into t1 values(1005);
insert into t2 values(2005);
select * from t1;
select * from t2;
sync_slave_with_master;
connection slave;
select * from t1;
select * from t2;
# Non root user can not write on the slave
connection slave2;
--error ER_OPTION_PREVENTS_STATEMENT
insert into t1 values(1006);
--error ER_OPTION_PREVENTS_STATEMENT
insert into t2 values(2006);
## Cleanup
connection master;
drop table t1;
drop table t2;
sync_slave_with_master;

6
sql/handler.cc
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@@ -693,7 +693,11 @@ int ha_commit_trans(THD *thd, bool all)
DBUG_RETURN(1);
}
if (is_real_trans && opt_readonly)
if ( is_real_trans
&& opt_readonly
&& ! (thd->security_ctx->master_access & SUPER_ACL)
&& ! thd->slave_thread
)
{
my_error(ER_OPTION_PREVENTS_STATEMENT, MYF(0), "--read-only");
ha_rollback_trans(thd, all);

6
sql/lock.cc
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@@ -151,7 +151,11 @@ MYSQL_LOCK *mysql_lock_tables(THD *thd, TABLE **tables, uint count,
}
}
if (write_lock_used && opt_readonly)
if ( write_lock_used
&& opt_readonly
&& ! (thd->security_ctx->master_access & SUPER_ACL)
&& ! thd->slave_thread
)
{
/*
Someone has issued SET GLOBAL READ_ONLY=1 and we want a write lock.