Re: upgrading form 4.2 to 5.x

From: epilogue (epilogue_at_allstream.net)
Date: 07/17/04

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    Date: Sat, 17 Jul 2004 17:14:22 -0400
To: mrb@bmyster.com

    On Sat, 17 Jul 2004 14:50:13 +0200
    Remko Lodder <remko@elvandar.org> wrote:

    > Brent Bailey wrote:
    >
    > > Hello,
    > > My company has been asked to help with the upgrade of several Freebsd
    > > systems that are pretty old. The customer is running a file server
    > > samba also running apache running FBSD 4.2, he wants to upgrade using
    > > cvsup & the make buildworld procedure to upgrade to 5.x. Im very
    > > familier with the make buildworld procedure however there have been
    > > significant changes between 4.2 & 5.x so is this something that can be
    > > done without many problems ?

    hello brent,

    though i don't know anyone who has gone this route, i imagine it is
    possible. the reason most people don't cvsup from 4.x to 5.x is because
    there is a fundamental change in the filesystem (details of which escape me
    now - check the release notes at freebsd.org). by simply cvsupping, you
    will _not_ be able to take advantage of the new filesystem.

    if your customer insists upon 5.x, it would probably be best to prepare a
    full back-up then:

    a) take the machine down, make a fresh install of 5.x, then load back data.

    b) build and configure a parallel 5.x machine, load it with the backed-up
    data, then find a new use for the 4.x series machine.

    hth.

    cheers,
    epi

    > > Aside from reading throught the /usr/src/UPDATING file are
    > > there things i should look out for being that the 2 versions are so
    > > differrent.
    > >
    > > personally i would recommend going to the lastest stable release
    > > 4.10-p2
    > >
    > > I welcome this lists thoughts & opions on this matter
    > >
    > > thank in advance for any help :-)
    >
    > Hey Brent,
    >
    > FreeBSD 5.x has not yet been described as production release ready.
    > So your customer is best advised to use the 4.x branch, and indeed at
    > the moment that is 4.10 (and the patches afterwards ofcourse).
    >
    > However i am running FreeBSD 5.x as production server in 2 colocated
    > boxes without any problems. So it does not mean that it's crashing all
    > the time, but there might be bugs that can cause downtime for your
    > customer, and he should be willing to risk that problem if you want to
    > upgrade to 5.x. If he prefers stablitity, and little downtime you do
    > best to upgrade to the latest 4 release with patches.
    >
    > Since it's a very long while back that i runned 4.x (4.3 ...) i can't
    > remember anymore what the huge differences are, perhaps someone else can
    > describe that to you.
    >
    > Cheers!
    >
    > --
    > Kind regards,
    >
    > Remko Lodder |remko@elvandar.org
    > Reporter DSINet |remko@dsinet.org
    > Projectleader Mostly-Harmless |remko@mostly-harmless.nl
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