On Thu, Sep 08, 2011 at 06:49:16AM +0200, Tomas Bodzar wrote:
> On Thu, Sep 8, 2011 at 6:41 AM, Wesley M. <open...@e-solutions.re> wrote:
> > Hi,
> >
> > Need to cvs update and rebuild, so take time.
> > And configuration file can change
> 
> No compilation at all.
> 
> With snapshots:
> 
> binary upgrade
> sysmerge(8) for config files
> pkg_add -ui for packages
> 
> Takes cca 15minutes on modern HW. During that time you can drink eg.
> coffe and occasionally hit Enter on your keyboard :-)

So you will have at least 15 minutes of downtime on your production
server, but if you run into problems e.g because of a non-trivial
configuration file change, kernel bug that makes your network
card unusable, and such that has happened in the past your are
looking at a worst case downtime of several days waiting for a
better snapshot. Depending on the demands on the server that is
maybe not worth the risk.

You could have an identical dummy server and do a test upgrade
to be sure to avoid that. To avoid wasting time and resources
sometimes running stable with patches is the better option.

> 
> >
> > Cheers,
> >
> > Wesley.
> >
> >>> i'm sorry :(
> >>
> >> don't be sorry, just tell me why, i am just curious.

-- 

/ Raimo Niskanen, Erlang/OTP, Ericsson AB

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