create table t1(f1 int not null, f2 int not null, index idx(f2))engine=innodb;
create table t2(f1 int primary key, f2 int, index idx(f2))engine=innodb;
insert into t1 values(1, 2);
insert into t2 values(1, 2);
SET GLOBAL innodb_fast_shutdown = 0;
# restart: --innodb-force-recovery=4
SELECT CAST(variable_value AS INTEGER) INTO @read1
FROM INFORMATION_SCHEMA.GLOBAL_STATUS
WHERE VARIABLE_NAME='innodb_buffer_pool_read_requests';
select * from t1;
f1	f2
1	2
SELECT CAST(variable_value AS INTEGER) INTO @read2
FROM INFORMATION_SCHEMA.GLOBAL_STATUS
WHERE VARIABLE_NAME='innodb_buffer_pool_read_requests';
SELECT @read1>0, @read2>@read1;
@read1>0	@read2>@read1
1	1
begin;
insert into t1 values(2, 3);
rollback;
alter table t1 add f3 int not null, algorithm=copy;
alter table t1 add f4 int not null, algorithm=inplace;
drop index idx on t1;
update t1 set f1=3 where f2=2;
create table t3(f1 int not null)engine=innodb;
drop table t3;
rename table t1 to t3;
rename table t3 to t1;
truncate table t1;
show tables;
Tables_in_test
t1
t2
# restart: --innodb-force-recovery=5
select * from t2;
f1	f2
1	2
insert into t2 values(2, 3);
ERROR HY000: Running in read-only mode
alter table t2 add f3 int not null, algorithm=copy;
ERROR HY000: Can't create table `test`.`t2` (errno: 165 "Table is read only")
alter table t2 add f3 int not null, algorithm=inplace;
ERROR 0A000: ALGORITHM=INPLACE is not supported. Reason: Running in read-only mode. Try ALGORITHM=COPY
drop index idx on t2;
ERROR HY000: Can't create table `test`.`t2` (errno: 165 "Table is read only")
update t2 set f1=3 where f2=2;
ERROR HY000: Running in read-only mode
create table t3(f1 int not null)engine=innodb;
ERROR HY000: Can't create table `test`.`t3` (errno: 165 "Table is read only")
drop table t3;
ERROR HY000: Table 't3' is read only
rename table t2 to t3;
ERROR HY000: Error on rename of './test/t2' to './test/t3' (errno: 165 "Table is read only")
truncate table t2;
ERROR HY000: Table 't2' is read only
drop table t2;
ERROR HY000: Table 't2' is read only
create schema db;
drop schema db;
show tables;
Tables_in_test
t1
t2
# restart: --innodb-force-recovery=6
select * from t2;
f1	f2
1	2
insert into t2 values(2, 3);
ERROR HY000: Table 't2' is read only
alter table t2 add f3 int not null, algorithm=copy;
ERROR HY000: Table 't2' is read only
alter table t2 add f3 int not null, algorithm=inplace;
ERROR 0A000: ALGORITHM=INPLACE is not supported. Reason: Running in read-only mode. Try ALGORITHM=COPY
drop index idx on t2;
ERROR HY000: Table 't2' is read only
update t2 set f1=3 where f2=2;
ERROR HY000: Table 't2' is read only
create table t3(f1 int not null)engine=innodb;
ERROR HY000: Can't create table `test`.`t3` (errno: 165 "Table is read only")
drop table t1;
ERROR HY000: Table 't1' is read only
rename table t2 to t3;
ERROR HY000: Error on rename of './test/t2' to './test/t3' (errno: 165 "Table is read only")
truncate table t2;
ERROR HY000: Table 't2' is read only
drop table t2;
ERROR HY000: Table 't2' is read only
show tables;
Tables_in_test
t1
t2
# restart: --innodb-force-recovery=2
select * from t2;
f1	f2
1	2
begin;
update t2 set f2=3;
connect  con1,localhost,root,,;
# Force a redo log flush of the above uncommitted UPDATE
SET GLOBAL innodb_flush_log_at_trx_commit=1;
drop table t1;
disconnect con1;
connection default;
# Kill the server
# restart: --innodb-force-recovery=3
SET TRANSACTION ISOLATION LEVEL READ UNCOMMITTED;
select * from t2;
f1	f2
1	3
SET TRANSACTION ISOLATION LEVEL REPEATABLE READ;
select * from t2;
f1	f2
1	2
SET SESSION innodb_lock_wait_timeout=1;
insert into t2 values(1,2);
ERROR HY000: Lock wait timeout exceeded; try restarting transaction
insert into t2 values(9,10);
# restart
select * from t2;
f1	f2
1	2
9	10
drop table t2;
show tables;
Tables_in_test