maria-discuss team mailing list archive

[mike bayer <mike_mp@xxxxxxxxxxxxxxxx>]

On 02/23/2017 05:22 PM, Reindl Harald wrote:
> Am 23.02.2017 um 23:03 schrieb mike bayer:
> > On 02/23/2017 03:37 PM, Reindl Harald wrote:
> > > normally you just update and run "mysql_upgrade -u root -p"
> > > mysql/mariadb is not postgres
> >
> > some of us could benefit from official language that we could give to
> > customers
>
> how do you imagine "official"?
>
> in any sense "official" in teh software world means "you are going from
> version x tro version y with *excatly* options z" - well, fine, but taht
> don't match more than a few people of the real world anyways
>
> to be honest: such questions are completly useless - if you don#t have a
> machine where you can test your data with your configuration 1:1 step
> back and get one - that's it and will always be independent of operating
> system, software, configuration and data
>
> and even if you have - be prepared that something unexpected happens on
> the live machine which did not show on the clone - be prepeared to deal
> with it - it's that simple

I work for well known vendor where thousands of customers will at some 
point be getting 10.1 installed where they previously had 5.6 as part of 
a larger installation.  All other aspects of the OS and configuration 
remain identical.   We need to answer the question whether or not 
customers are to be told to rebuild a new data directory from scratch 
and run a full mysqldump, potentially taking many hours, or if the 
installer can just run mysql_upgrade, taking a few seconds. Asking all 
our customers to try the whole thing out on a copy of their production 
machine and to debug their own installation is not an option.

If a piece of software shipped by a software vendor works or not with 
the datafile from a given version of their software is an answerable 
question.    The mariadb documentation encourages upgrades from 
5.5->10.0 for example, and does not suggest that the data directory has 
to be fully dumped and restored.  That's what "official" means in this 
context.




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