Hi Russell,

> Why not?  Can't the same client code talk to both MySQL and MariaDB?

Maybe.. There are many C++ programs for the DB so I am not sure
whether that is feasible. They might have even joins between the DBs.

That is MySQL 5.5 says something about the age of the apps using it...

> Could you setup a test version of the database server after copying a snapshot
> to somewhere with equivalent hardware and run a test dump to find out how long
> it takes?

That's probably the way I am heading.

I vaguely remember having used some Percona Tools but that was between
old versions "close to each other", 5.5 to 5.6, I think. The gap to
MariaDB 1011 is quite wide..

Thank you
Peter

On Mon, Sep 28, 2026 at 7:02 PM Russell Coker <[email protected]> wrote:
>
> On Monday, 28 September 2026 18:44:39 AEST Peter Ross wrote:
> > > Can you migrate them one at a time?
> >
> > No, unfortunately not.
>
> Why not?  Can't the same client code talk to both MySQL and MariaDB?
>
> > > How are you doing backups now?
> >
> > There is a MySQL 5.5 replica set up.
> >
> > (And regular snapshots on filesystem underneath, to go 'back in time' if
> > needed)
>
> Could you setup a test version of the database server after copying a snapshot
> to somewhere with equivalent hardware and run a test dump to find out how long
> it takes?
>
> --
> My Main Blog         http://etbe.coker.com.au/
> My Documents Blog    http://doc.coker.com.au/
>
>
>
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