Sometimes a MySQL server running InnoDB takes a long time to shut down. The usual culprit is flushing dirty pages … shutdown process, for a variety of reasons. One way to decrease the shutdown time is to pre-flush the dirty pages, like this: mysql… zero.) Once it’s pretty low, you can perform the shutdown and there’ll be a lot less unfinished work to…
Post: How long Innodb Shutdown may take
September 2, 2010 By 8 Comments
… may take MySQL with Innodb tables to shut down ? It can be quite a while. In default configuration innodb_fast_shutdown=ON… scenario though it is quite common in practice to see shutdown time of about 1min per GB of buffer pool per hard…. Baron has written a nice post how to decrease innodb shutdown time which you may want to read on this topic.
Post: Ultimate MySQL variable and status reference list
January 8, 2011 By 4 Comments
… referring to the amazing MySQL manual, especially the option and variable reference table. …Threads_createdblogpercona.commanual Threads_runningblogpercona.commanual time_formatblogpercona.commanual time_zoneblogpercona.commanual timed_mutexesblogpercona.commanual timestampblogpercona.commanual tmp_…
Post: MySQL Crash Recovery
July 30, 2006 By 26 Comments
… things – MySQL Shutdown is unexpected and there could be various inconsistences. And this is not only problem as we’ll see. MySQL has… cause MySQL to fail with wierd error messages. In MySQL 4.1 sync_frm option was added which reduces this problem as time… honest “try again later” message, but also – warmup takes longer time on extreme load. Innodb statistics – Unlike MyISAM Innodb does not…
Post: How to recover a single InnoDB table from a Full Backup
January 25, 2012 By 7 Comments
… is, shutting down with innodb_fast_shutdown=0. We’ll use XtraBackup to avoid the server shutdown. You must not drop, truncate… runs a recovery process on the backup with innodb_fast_shutdown=0 and therefore merging all the insert buffers. # innobackupex –defaults… | +——–+——–+————+————+ mysql> DELETE FROM salaries WHERE emp_no=10008; The next step is where we are going to save a lot of time…
Post: Faster Point In Time Recovery with LVM2 Snaphots and Binary Logs
February 23, 2012 By Leave a Comment
… their salaries on time!). mysql> delete from salaries where emp_no = 10001; Query OK, 17 rows affected (0.15 sec) mysql> drop table…@sb logs]# mount /mysql/data [root@sb logs]# /etc/init.d/mysql start Starting MySQL (Percona Server) [ OK ] You should shutdown MySQL first, then unmount…
Post: Percona XtraDB Cluster Feature 1: High Availability
January 17, 2012 By 18 Comments
… running with 2 nodes too. 2. Each Node is regular MySQL / Percona Server setup. The point is that you can convert your existing MySQL / Percona Server into Node and roll Cluster using it as… take any of nodes down. At any point of time you can shutdown any Node to perform maintenance or make configuration changes…
Post: How to replace a NDB node on EC2
June 9, 2011 By 10 Comments
…group (NoOfReplicas=2) will cause the NDB cluster to shutdown. This can be solved by using host names … like: [NDBD DEFAULT] NoOfReplicas=2 Datadir=/var/lib/mysql-cluster/ DataMemory=1G IndexMemory=100M [NDB_MGMD] Id=…read the new /etc/hosts file and the second time, the connection will succeed…
Comment: Pitfalls of converting to InnoDB
March 8, 2007 By 16 Comments
…I’m using PHP 5.1.6, MySQL 5.0.24a default installs from Ubuntu…attempting to insert takes 50 seconds to time-out with a “1205 – Lock wait timeout…_in_progress = true; register_shutdown_function(array($this, “__shutdown_check”)); } public function __shutdown_check() { if ($this->transaction_in_…
Comment: How long Innodb Shutdown may take
September 2, 2010 By 8 Comments
… shutdown. I have a number of servers which in the somewhat older (major release is still supported…) version of MySQL leak memory. MySQL on these servers takes a very long time to shutdown. Recently we “kill -9″ an…. Is there any good way to know when InnoDB is shutdown when MySQL is not yet?
