Dear all,

Currently we have two production servers that run MySQL 5.0.77. Those two servers contain databases that use MYISAM as database engine. One server has approx 60 GB of data and 20 GB for the other.

Some time ago, we've purchased a new server that we want to use as our new production server. What we want/need/plan to do for our NEW server are:

1. Combines those two old servers into one new server.
2. Upgrade our beloved MySQL 5.0.77 to Maria-db 10.
3. Change database engine from ISAM to INNODB.

Our current option is dump everything and restore all to our new server as INNODB in Maria-db. But from our simulation, processes will cost us roughly 16 hours (5 GB of data cost us around 30 minutes with innodb_doublewrite=0).

My question is, how can we do those three tasks with as minimum down time as possible?
Any help appreciated...

Regards,

Yoachan

What I would do is set your new server up from scratch (does it already have MariaDB on it?).

Get the schema for the two data bases, not an unload, just the schema and copy them over to the new server. Make sure you specify INNODBm, and, without knowing where you are, think about UTF-8 (particularly if you have accented characters in your data).

Check your configuration files in /etc/my.cnf.d on the new server, make sure you've got your options set properly.

Take a look at your schema files. Do you have tons of indexes? Particularly unique indexes? If so, yank all the indexes out of the schema into a separate file. Do the same if you have stored procedures or triggers; into a separate file.

Your data will load much, much faster without the indexes (particularly unique indexes), ditto for any stored procedures or triggers.

Build the data bases using the schema files (without indexes, etc.).

All that can be done before you do anything else.

Now you need to get your data off the existing server. You can use mysqldump (or whatever utility you want), read though the manual page for options (one of which will be do not generate the schema). All you want is data, nothing else.

Copy the data files to your new server, load them (it's going to load really quickly).

Add the indexes, then add the stored procedures and triggers (if any).

It's not going to take any 15+ hours to do this, more like a couple. The indexes will build quickly also (and, it's the indexes that are slowing you down, might want to do a review of your indexes).

It's the way I do transfers from one sever to the other and has worked fine for a lot of years.

Hope this helps some.

@tronayne:

Thank you for your help. we'll be doing as you suggested.
Turning off indexes seems like a good idea.
will give it a shot.