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<H1>[Mageia-dev] ANN: Upgrading from Mageia 2 via urpmi</H1>
<B>Colin Guthrie</B>
<A HREF="mailto:mageia-dev%40mageia.org?Subject=Re%3A%20%5BMageia-dev%5D%20ANN%3A%20Upgrading%20from%20Mageia%202%20via%20urpmi&In-Reply-To=%3C50C4DE91.20906%40colin.guthr.ie%3E"
TITLE="[Mageia-dev] ANN: Upgrading from Mageia 2 via urpmi">mageia at colin.guthr.ie
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<I>Sun Dec 9 19:55:13 CET 2012</I>
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<PRE>'Twas brillig, and Thierry Vignaud at 09/12/12 18:48 did gyre and gimble:
><i> On 9 December 2012 13:18, Colin Guthrie <<A HREF="https://www.mageia.org/mailman/listinfo/mageia-dev">mageia at colin.guthr.ie</A>> wrote:
</I>>>>><i> So I've just pushed the package mageia-prepare-upgrade to mga2
</I>>>>><i> core/updates_testing.
</I>>>>><i>
</I>>>>><i> This package, when installed will add a new menu option to your
</I>>>>><i> bootloader. Simply install this package, reboot, select the "Mageia 3
</I>>>>><i> Upgrade Preparation" entry boot, wait while your FS is converted and
</I>>>>><i> then perform a urpmi upgrade as you would normally.
</I>>>>><i>
</I>>>>><i> I've not specifically tested the upgrade part, only the installation and
</I>>>>><i> creation of the initrd and bootloader entries in grub. I've also not
</I>>>>><i> done this on an mga2 machine yet but will do soon enough.
</I>>>>><i>
</I>>>>><i> I just wanted to get this package "out there" for anyone wanting to
</I>>>>><i> update their mga2 machines to mga3 a3 but not wanting to use the installer.
</I>>>>><i>
</I>>>>><i> At present there are a few limitations:
</I>>>>><i>
</I>>>>><i> 1. It requires kernel 3.3.8-2.mga2 to be installed (any flavour should
</I>>>>><i> work). A specific kernel version is not really 100% necessary but it
</I>>>>><i> does mean I can add hard requires to the package. This is only desirable
</I>>>>><i> to prevent the situation where users install this upgrade package but do
</I>>>>><i> not run it and later remove the kernel used to generate the initrd for
</I>>>>><i> the bootloader menu item, thus breaking it. Any smarter ideas on how to
</I>>>>><i> manage this welcome.
</I>>>>><i>
</I>>>>><i> 2. If you have /usr in a separate partition and have it mounted ro in
</I>>>>><i> your fstab, you will have to manually change the fstab to rw for the
</I>>>>><i> upgrade boot.
</I>>>>><i>
</I>>>>><i>
</I>>>>><i> Happy testing. Let me know if it kills any kittens. Please keep a backup
</I>>>>><i> etc. etc.
</I>>>>><i>
</I>>>>><i> Col
</I>>>><i> Thanks Colin.
</I>>>><i> The conversion works. But then the problem shows, we have no network.
</I>>>><i> doing a urpmi --download-all --auto-update only downloads the fist 120+ rpms (the ones needed before
</I>>>><i> restart-urpmi
</I>>>><i>
</I>>>><i> What is needed is to add some directories and then the network will start
</I>>>><i> /var/run/netreport
</I>>>><i> /var/lock/subsystem/network
</I>>>><i>
</I>>>><i> I will check after the upgrade if they can be deleted
</I>>><i>
</I>>><i> Hmm, yes, I guess after doing the upgrade the various /var/run and
</I>>><i> /var/lock folders would be nuked. In mga3 they will be created by
</I>>><i> tmpfiles but not with a simple reboot on mga2...
</I>>><i>
</I>>><i> Hmm, I wonder how best to do this... perhaps we could ship updated
</I>>><i> packages for each of the packages which absolutely *need* this to do the
</I>>><i> download... or perhaps we could just ship some essential config tweaks
</I>>><i> in the this mageia-prepare-upgrade file. It shouldn't do any harm to do
</I>>><i> the latter and it's a bit easier on the QA folk.
</I>><i>
</I>><i> Humm we could just package mageia-prepare-upgrade in mga3 and add
</I>><i> it to urpmi priority list.
</I>><i> Thus it would also work for people who never apply updates...
</I>><i> My 2 cents
</I>
Not sure it would help. I mean users have to install it, reboot and then
install the rest...
Also how does the urpmi priority list work? Does that not require that
we install urpmi first? If so that likely won't work as there is a
chicken and egg scenario that prevents the rpm+urpmi from mga3 being
installed until the fs is updated.
Basically, a fully up-to-date mga2 (including rpm package and the
mageia-prepare-upgrade package) + reboot for preparation is needed for a
urpmi-based upgrades to work.
Col
--
Colin Guthrie
colin(at)mageia.org
<A HREF="http://colin.guthr.ie/">http://colin.guthr.ie/</A>
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