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6da8ac5f71
This makes it possible to do safe multi volume snapshots as long as one snapshots the volume with the transaction logs last. include/mysql_com.h: Added REFRESH_CHECKPOINT mysql-test/r/flush.result: Added test of new FLUSH TABLES syntax + calls to checkpoint_status handler calls mysql-test/t/flush.test: Added test of new FLUSH TABLES syntax + calls to checkpoint_status handler calls sql/handler.cc: Added code to call checkpoint_state for all handlertons that supports it sql/handler.h: Added new checkpoint_state() handlerton call to temporarly disable checkpoints. sql/lex.h: Added CHECKPOINT keyword sql/sql_yacc.yy: Added support for FLUSH TABLES WITH READ LOCK AND DISABLE CHECKPOINT storage/maria/ha_maria.cc: Added handlerton call to disable checkpoints. storage/maria/ma_checkpoint.c: Don't do checkpoint if checkpoints are disabled. storage/maria/ma_static.c: Added maria_checkpoint_disabled storage/maria/maria_def.h: Added maria_checkpoint_disabled storage/xtradb/handler/ha_innodb.cc: Added handlerton call to disable checkpoints. storage/xtradb/include/log0log.h: Added option to log_checkpoint() to allow one to ignore not critical checkpoints during the time checkpoints are disabled. storage/xtradb/log/log0log.c: Added code to allow one to disable checkpoints during a FLUSH TABLES ... DISABLE CHECKPOINT This was done by adding a new argument to log_checkpoint() which tells us when the checkpoint is called by srv_master_thread (which are safe to ignore) storage/xtradb/srv/srv0srv.c: Tell log_checkpoint() that checkpoints from srv_master_thread() are safe to ignore (will just delay recovery time a bit).
91 lines
2.6 KiB
Text
91 lines
2.6 KiB
Text
drop table if exists t1,t2;
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drop database if exists mysqltest;
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create temporary table t1(n int not null primary key);
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create table t2(n int);
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insert into t2 values(3);
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select * from t1;
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n
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3
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flush tables with read lock and disable checkpoint;
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drop table t2;
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ERROR HY000: Can't execute the query because you have a conflicting read lock
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drop table t2;
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unlock tables;
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create database mysqltest;
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create table mysqltest.t1(n int);
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insert into mysqltest.t1 values (23);
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flush tables with read lock;
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drop database mysqltest;
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select * from mysqltest.t1;
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n
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23
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unlock tables;
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create table t1 (n int);
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flush tables with read lock;
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insert into t1 values (345);
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select * from t1;
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n
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345
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drop table t1;
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create table t1 (c1 int);
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lock table t1 write;
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flush tables with read lock;
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ERROR HY000: Can't execute the given command because you have active locked tables or an active transaction
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lock table t1 read;
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flush tables with read lock;
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lock table t1 write;
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ERROR HY000: Can't execute the query because you have a conflicting read lock
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lock table t1 read;
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lock table t1 write;
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ERROR HY000: Can't execute the query because you have a conflicting read lock
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unlock tables;
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create table t2 (c1 int);
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create table t3 (c1 int);
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lock table t1 read, t2 read, t3 write;
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flush tables with read lock;
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ERROR HY000: Can't execute the given command because you have active locked tables or an active transaction
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lock table t1 read, t2 read, t3 read;
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flush tables with read lock;
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unlock tables;
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drop table t1, t2, t3;
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create table t1 (c1 int);
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create table t2 (c1 int);
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lock table t1 write;
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flush tables with read lock;
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insert into t2 values(1);
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unlock tables;
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drop table t1, t2;
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drop table if exists t1, t2;
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set session low_priority_updates=1;
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create table t1 (a int);
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create table t2 (b int);
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lock tables t1 write;
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flush tables with read lock;
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ERROR HY000: Can't execute the given command because you have active locked tables or an active transaction
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unlock tables;
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lock tables t1 read, t2 write;
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flush tables with read lock;
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ERROR HY000: Can't execute the given command because you have active locked tables or an active transaction
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unlock tables;
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lock tables t1 read;
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flush tables with read lock;
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unlock tables;
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drop table t1, t2;
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set session low_priority_updates=default;
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select benchmark(200, (select sin(1))) > 1000;
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End of 5.0 tests
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set @old_general_log= @@general_log;
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set @old_read_only= @@read_only;
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set global general_log= on;
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flush tables with read lock;
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flush logs;
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unlock tables;
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set global read_only=1;
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flush logs;
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unlock tables;
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flush tables with read lock;
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flush logs;
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unlock tables;
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set global general_log= @old_general_log;
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set global read_only= @old_read_only;
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End of 5.1 tests
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