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From:chen jia Date:August 29 2009 12:36am
Subject:Re: Fail to change MySQL data directory on ubuntu
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That is likely the case. As you said, I do not use innodb tables.

Best,
Jia

On Fri, Aug 28, 2009 at 8:25 AM, Johnny Withers<johnny@stripped> wrote:
> Maybe you do not use innodb tables, in that case there would be no data loss.
>
> On Thursday, August 27, 2009, Jia Chen <chen.1002@stripped> wrote:
>> Thanks for the tips. Where can I find more details about the ibdata file?
>>
>> After I changed the data dir, hese file did get recreated. So far, I have not
> noticed any data loss yet.
>>
>> Best,
>> Jia
>>
>> Eric Bergen wrote:
>>
>> That procedure is horribly incorrect. You should simply move the
>> ib_log and ibdata files with the rest of the datadir. The ibdata1 file
>> contains innodb's system tables and depending on your setting of
>> innodb_file_per_table it also contains your data!
>>
>> On Thu, Aug 27, 2009 at 7:56 AM, Jia Chen<chen.1002@stripped> wrote:
>>
>>
>> Chen, Did you really delete ibdata1 ?
>>
>>
>> Yes, I did.
>>
>> Best,
>> Jia
>>
>>
>> Claudio Nanni wrote:
>>
>>
>> 2009/8/26 chen jia <chen.1002@stripped
> <mailto:chen.1002@stripped>>
>>
>>    Hi there,
>>
>>    I am using MySQL on ubuntu 8.04.
>>
>>    I followed this link
>>
>>
>  http://www.ubuntu-howto.info/howto/how-to-move-mysql-databases-to-another-location-partition-or-hard-drive
>>    to change the data directory of MySQL.
>>
>>    After stopping MySQL: sudo /etc/init.d/mysql stop
>>
>>    I make a new directory: sudo mkdir /media/disk/MySQL_data
>>
>>    then change the ownership of new directory, sudo chown mysql:mysql
>>    /media/disk/MySQL_data
>>
>>    and copy all data to the new directory, cp -r -p /var/lib/mysql/*
>>    /media/disk/MySQL_data/ and deleted all files like ibdata1,
>>
>>
>> Chen, Did you really delete ibdata1 ?
>>
>>
>>
>>
>>
>>
>>    ib_logfile0, and ib_logfile1.
>>
>>    I then edit /etc/mysql/my.conf and update the "datadir" to my new
>>    directory. I also update /etc/apparmor.d/usr.sbin.mysql so that
> news
>>    lines with /var/lib/mysql replaced by /media/disk/MySQL_data are
>>    added.
>>
>>    However, after sudo /etc/init.d/apparmor reload
>>
>>    I try sudo /etc/init.d/mysql start
>>
>>    I got
>>    * Starting MySQL database server mysqld
>>           [fail]
>>
>>    If I change the "datadir" line in /etc/mysql/my.conf back to the
>>    original one, I can start MySQL successfully.
>>
>>    I think I have done everything needed to change MySQL data
> directory.
>>
>>    Why am I still getting this error?  Where can I start to look
> for
>>    the causes?
>>
>>    Thanks.
>>
>>    Jia
>>
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>>
>>
>>
>>
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>>
>>
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>>
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>>
>>
>>
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>>
>
> --
> -----------------------------
> Johnny Withers
> 601.209.4985
> johnny@stripped
>



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Thread
Fail to change MySQL data directory on ubuntuchen jia26 Aug
  • Re: Fail to change MySQL data directory on ubuntuJohnny Withers26 Aug
    • Re: Fail to change MySQL data directory on ubuntuJia Chen26 Aug
      • Re: Fail to change MySQL data directory on ubuntuJohnny Withers26 Aug
        • Re: Fail to change MySQL data directory on ubuntuJohnny Withers26 Aug
          • Re: Fail to change MySQL data directory on ubuntuJia Chen26 Aug
  • Re: Fail to change MySQL data directory on ubuntuClaudio Nanni27 Aug
    • Re: Fail to change MySQL data directory on ubuntuJia Chen27 Aug
      • Re: Fail to change MySQL data directory on ubuntuEric Bergen27 Aug
        • Re: Fail to change MySQL data directory on ubuntuJia Chen27 Aug
          • Re: Fail to change MySQL data directory on ubuntuJohnny Withers28 Aug
            • Re: Fail to change MySQL data directory on ubuntuchen jia29 Aug