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RE: Disk Full Problem....

Thanks for the info.

I was just thinking another option also. I dont know if its any realistic
one. Can we mount 2nd machines disk on to server in question and copy all
the data files to that volume and create symbolic links and see if that
database comes up and works. 

Any suggestions will be of great help.., 


-----Original Message-----
From: Ed Wilts [mailto:ewilts ewilts org]
Sent: Friday, February 20, 2004 2:31 PM
To: redhat-list redhat com
Subject: Re: Disk Full Problem....

On Fri, Feb 20, 2004 at 01:41:09PM -0500, Srinivas Koppisetti wrote:
> Can we move mysql data files to a different volume and ask the endine to
> pick the data files from there. If so I need some more help on how to do
> that. 

I'm doing this off the top of my head so double-check my work before you
shoot yourself in the foot. I have not verified that mysql follows
symbolic links.  An alternative to using the symbolic link is to edit
/etc/rc.d/init.d/mysqld and change the datadir symbol, but you'll have
to be careful with every mysql update that your edited version of the
mysqld script doesn't get overwritten.

Assume your new disk is /u01 and you want to move the databases to

# /sbin/service mysqld shutdown
# du -sh /var/lib/mysql
        See how much space is used now.
# ls -ltR /var/lib/mysql
        Check file owners and permissions too
# mv /var/lib/mysql /u01/mysql
# du -sh /u01/mysql
# ls -ltR /u01/mysql
# ln -s /var/lib/mysql /u01/mysql
# ls -ltR /var/lib/mysql
        You should see the same files but in the new locations
# /sbin/service/mysqld start

Ed Wilts, Mounds View, MN, USA
mailto:ewilts ewilts org
Member #1, Red Hat Community Ambassador Program

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