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1ca75ae1c8
At higher levels of innodb_force_recovery, the InnoDB transaction subsystem will not be set up at all. At slightly lower levels, recovered transactions will not be rolled back, and DDL operations could hang due to locks being held at all. Let us consistently refuse all writes if the predicate high_level_read_only holds. We failed to refuse DROP TABLE and DROP DATABASE. (Refusing DROP TABLE is a partial backport from MDEV-19570 in the 10.5 branch.)
126 lines
4.1 KiB
Text
126 lines
4.1 KiB
Text
create table t1(f1 int not null, f2 int not null, index idx(f2))engine=innodb;
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create table t2(f1 int primary key, f2 int, index idx(f2))engine=innodb;
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insert into t1 values(1, 2);
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insert into t2 values(1, 2);
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SET GLOBAL innodb_fast_shutdown = 0;
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# Restart the server with innodb_force_recovery as 4.
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select * from t1;
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f1 f2
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1 2
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insert into t1 values(2, 3);
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ERROR HY000: Running in read-only mode
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alter table t1 add f3 int not null, algorithm=copy;
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ERROR HY000: Can't create table `test`.`t1` (errno: 165 "Table is read only")
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alter table t1 add f3 int not null, algorithm=inplace;
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ERROR 0A000: ALGORITHM=INPLACE is not supported. Reason: Running in read-only mode. Try ALGORITHM=COPY
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drop index idx on t1;
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ERROR HY000: Can't create table `test`.`t1` (errno: 165 "Table is read only")
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alter table t1 drop index idx, algorithm=inplace;
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ERROR 0A000: ALGORITHM=INPLACE is not supported. Reason: Running in read-only mode. Try ALGORITHM=COPY
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update t1 set f1=3 where f2=2;
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ERROR HY000: Running in read-only mode
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create table t3(f1 int not null)engine=innodb;
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ERROR HY000: Can't create table `test`.`t3` (errno: 165 "Table is read only")
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drop table t3;
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ERROR 42S02: Unknown table 'test.t3'
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rename table t1 to t3;
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ERROR HY000: Error on rename of './test/t1' to './test/t3' (errno: 165 "Table is read only")
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truncate table t1;
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ERROR HY000: Table 't1' is read only
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drop table t1;
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ERROR HY000: Table 't1' is read only
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show tables;
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Tables_in_test
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t1
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t2
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# Restart the server with innodb_force_recovery as 5.
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select * from t2;
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f1 f2
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1 2
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insert into t2 values(2, 3);
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ERROR HY000: Running in read-only mode
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alter table t2 add f3 int not null, algorithm=copy;
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ERROR HY000: Can't create table `test`.`t2` (errno: 165 "Table is read only")
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alter table t2 add f3 int not null, algorithm=inplace;
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ERROR 0A000: ALGORITHM=INPLACE is not supported. Reason: Running in read-only mode. Try ALGORITHM=COPY
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drop index idx on t2;
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ERROR HY000: Can't create table `test`.`t2` (errno: 165 "Table is read only")
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update t2 set f1=3 where f2=2;
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ERROR HY000: Running in read-only mode
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create table t3(f1 int not null)engine=innodb;
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ERROR HY000: Can't create table `test`.`t3` (errno: 165 "Table is read only")
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drop table t3;
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ERROR 42S02: Unknown table 'test.t3'
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rename table t2 to t3;
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ERROR HY000: Error on rename of './test/t2' to './test/t3' (errno: 165 "Table is read only")
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truncate table t2;
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ERROR HY000: Table 't2' is read only
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drop table t2;
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ERROR HY000: Table 't2' is read only
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create schema db;
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drop schema db;
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show tables;
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Tables_in_test
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t1
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t2
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# Restart the server with innodb_force_recovery as 6.
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select * from t2;
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f1 f2
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1 2
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insert into t2 values(2, 3);
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ERROR HY000: Table 't2' is read only
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alter table t2 add f3 int not null, algorithm=copy;
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ERROR HY000: Table 't2' is read only
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alter table t2 add f3 int not null, algorithm=inplace;
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ERROR 0A000: ALGORITHM=INPLACE is not supported. Reason: Running in read-only mode. Try ALGORITHM=COPY
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drop index idx on t2;
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ERROR HY000: Table 't2' is read only
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update t2 set f1=3 where f2=2;
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ERROR HY000: Table 't2' is read only
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create table t3(f1 int not null)engine=innodb;
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ERROR HY000: Can't create table `test`.`t3` (errno: 165 "Table is read only")
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drop table t1;
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ERROR HY000: Table 't1' is read only
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rename table t2 to t3;
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ERROR HY000: Error on rename of './test/t2' to './test/t3' (errno: 165 "Table is read only")
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truncate table t2;
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ERROR HY000: Table 't2' is read only
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drop table t2;
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ERROR HY000: Table 't2' is read only
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show tables;
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Tables_in_test
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t1
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t2
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# Restart the server with innodb_force_recovery=2
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select * from t2;
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f1 f2
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1 2
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begin;
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update t2 set f2=3;
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connect con1,localhost,root,,;
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# Force a redo log flush of the above uncommitted UPDATE
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SET GLOBAL innodb_flush_log_at_trx_commit=1;
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drop table t1;
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disconnect con1;
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connection default;
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# Kill the server
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# Restart the server with innodb_force_recovery=3
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SET TRANSACTION ISOLATION LEVEL READ UNCOMMITTED;
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select * from t2;
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f1 f2
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1 3
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SET TRANSACTION ISOLATION LEVEL REPEATABLE READ;
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select * from t2;
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f1 f2
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1 2
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SET GLOBAL innodb_lock_wait_timeout=1;
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insert into t2 values(1,2);
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ERROR HY000: Lock wait timeout exceeded; try restarting transaction
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insert into t2 values(9,10);
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select * from t2;
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f1 f2
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1 2
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9 10
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drop table t2;
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show tables;
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Tables_in_test
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