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From: J Trahair (j.trahair
foreversoftware.co.uk)
Date: Wed Nov 28 2007 - 02:51:51 CST
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What about the MySQL Administration backup routine, which can be scheduled for a convenient time? No-one has mentioned this one. We use it but perhaps there is something I should know...?
Thanks
Jonathan Trahair
----- Original Message -----
From: B. Keith Murphy
To: Dan Buettner
Cc: David Campbell ; MySql
Sent: Wednesday, November 28, 2007 2:55 AM
Subject: Re: preferred way to backup a 20GB MySQL database
I would echo what Dan says. In addition, from the slave server, you
might look at running the new mysql-parallel-dump tool that Baron
Schwartz has developed. It essentially does a dump with a thread
running (by default) for each CPU core you have. A dual core box will
run two threads and dump roughly twice as fast as a normal mysqldump.
In addition, it compresses the output making it much more compact. He
has renamed the toolkit to Maatkit and it is available at
http://maatkit.sourceforge.net/.
Also, you might look into using an LVM snapshot to run the copy from.
That way it doesn't interfere with your operations as much. I do that
for some of our production slave servers myself.
Keith
Dan Buettner wrote:
> I'd strongly recommend setting up replication, and then taking your backups
> from the replica.
>
> mysqlhotcopy works great, I used it for years myself, but it does require
> "freezing" your database while the copy happens. And no matter how you do
> it, copying 20 GB takes a little bit of time.
>
> Dan
>
> On Nov 27, 2007 4:35 PM, David Campbell <dave
cpfc.org> wrote:
>
>
>> Andras Kende wrote:
>>
>>> Hi,
>>>
>>> What is the preferred way to backup a 20GB database daily,
>>> without taking offline ?
>>>
>>> MySQL 4.1 MyISAM - (will be updated to MySQL 5)
>>>
>>> 133 table(s) Sum 115,416,561 latin1_swedish_ci 20.1 GB
>>>
>>>
>> Mysqlhotcopy
>>
>> --
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>>
>>
>>
>
>
--
Keith Murphy
editor: MySQL Magazine
http://www.mysqlzine.net
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