Re: [Automysqlbackup-users] Mysqlbackup fails an brings the server down

[Wipe_Out <wip...@us...>]

Try adding something like --max_allowed_packet=100M to the OPT= line in the
backup script and see if that helps things along..

Also is there anything being reported in the logs?



On 6 June 2011 10:41, Ward Loockx <wa...@lo...> wrote:

> It contains VARCHARS, INT, timestamp, DATETIME.
>
> This is the size info about the table
> Data 815,0 MB  Index 226,0 MB  Total 1,041,0 MB
> The individual size of a row = 815.000Kb / 777263 records = 1.05kb / record
>
>
> 2011/6/6 Wipe_Out <wip...@us...>
>
>> What data is in the table thats failing?
>> --Just alphanumeric text fields?
>> --or something else?
>>
>> How big is the table? (MB)
>> How big are the individual rows of data?
>>
>>
>>
>> On 6 June 2011 07:32, Ward Loockx <wa...@lo...> wrote:
>>
>>> I see that mysqlhotcopy is only available for myIsam and currently we use
>>> innoDB tables..
>>>
>>> Do you have another solution?
>>>
>>>
>>> 2011/6/2 Ward Loockx <wa...@lo...>
>>>
>>>> Hello,
>>>>
>>>> Thanks for the reply. I have control over the mysql settings. I'll also
>>>> take a look at mysqlhotcopy.
>>>>
>>>>
>>>> 2011/6/2 Wipe_Out <wip...@us...>
>>>>
>>>>> Hi,
>>>>>
>>>>> It could be an issue with the server running out of memory while
>>>>> dumping that large table.. The --opt switch is used which should disable
>>>>> memory buffering when its dumping the database but perhaps its something
>>>>> else.. It could also be that the table is being locked for a long time which
>>>>> is causing a problem for your website..
>>>>>
>>>>> Are you able to change the MySQL server settings? eg buffers etc..
>>>>>
>>>>> An alternative would be to not use the script to backup that database
>>>>> and instead use the mysqlhotcopy command which may work better for a larger
>>>>> database thats always active..
>>>>>
>>>>>
>>>>>
>>>>> Does seem strange because
>>>>>
>>>>> On 2 June 2011 08:44, Ward Loockx <wa...@lo...> wrote:
>>>>>
>>>>>> Hello,
>>>>>>
>>>>>> I currently use automysqlbackup to backup 10databases. There is one
>>>>>> big database that contains a table with +- 780.000records. When mysqlbackup
>>>>>> executes it fails (on that table) and brings my websites down (maybe the
>>>>>> load is so high that apache processes can't answer in time). Looks like
>>>>>> there are a lot of query's executed at the moment of backup and maybe the
>>>>>> query's are locking each other.
>>>>>>
>>>>>> I also get the following by email:
>>>>>>
>>>>>> mysqldump: Error 2013: Lost connection to MySQL server during query
>>>>>> when dumping table `video` at row: 745740
>>>>>>
>>>>>> I think this are 2seperate problems:
>>>>>>
>>>>>>    - Mysql backup script failing
>>>>>>    - Website's are down (because the use of too many resources?)
>>>>>>
>>>>>>
>>>>>> Do you guys have any ideas how to fix this? Can you let the script run
>>>>>> in low priority mode, so that it doesn't eat the resources and does not lock
>>>>>> any tables ?
>>>>>>
>>>>>> Thanks!
>>>>>> Ward
>>>>>>
>>>>>>
>>>>>>
>>>>>>
>>>>>> ------------------------------------------------------------------------------
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>>>>>
>>>>>
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>>>>
>>>
>>>
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>>> safe,
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>>
>>
>> ------------------------------------------------------------------------------
>> Simplify data backup and recovery for your virtual environment with
>> vRanger.
>> Installation's a snap, and flexible recovery options mean your data is
>> safe,
>> secure and there when you need it. Discover what all the cheering's about.
>> Get your free trial download today.
>> http://p.sf.net/sfu/quest-dev2dev2
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>> https://lists.sourceforge.net/lists/listinfo/automysqlbackup-users
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>>
>
>
> ------------------------------------------------------------------------------
> Simplify data backup and recovery for your virtual environment with
> vRanger.
> Installation's a snap, and flexible recovery options mean your data is
> safe,
> secure and there when you need it. Discover what all the cheering's about.
> Get your free trial download today.
> http://p.sf.net/sfu/quest-dev2dev2
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