On Wed, Jan 04, 2006 at 09:35:16PM -0500, David Coe wrote:

> Thanks; yes, I see that my 'mysql' host and other system tables are
> .ISM and .ISD files; I assume that means ISAM.

        Yep.  Thats what I had.

> I was able to downgrade to 4.1, which I figured would be safe since
> the 5.0 server had never actually started; I'm going to stay there
> for now.  If you'd like me to test a new upgrade path, I'll be happy
> to do that ; even if I were to lose all the mysql data, it would be
> no major loss.

        The manual fix is to run "mysql_convert_table_format mysql" to
        upgrade your "mysql" database to the MyISAM table format and
        then the upgrade to 5.0 should go smoothly.

        If you have any data at risk, run "mysqldump --opt
        --all-databases" so you can recover your data if something
        tragic happens.

        Maintainers: perhaps the preinst should check for any
        databases having .IS[MD] files and abort if they are found,
        warning the user to run mysql_convert_table_format or possibly
        running it for them before stopping and purging the old 4.1
        server?

-- 
Caleb Epstein |  bklyn . org  |<Culus> Hhhmmmmmmmm <Culus> waterbeds for cows
    cae at    | Brooklyn Dust |<Culus> eleet <cas> Culus: why would a cow need
bklyn dot org |   Bunny Mfg.  |a waterbed?  <Culus> cas:  To be comfy warm


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