[Mageia-dev] ANNOUNCE: The /usr move cometh! <---- Instructions

[Christiaan Welvaart]

On Fri, 3 Aug 2012, Colin Guthrie wrote:

> 'Twas brillig, and Pascal Terjan at 03/08/12 00:40 did gyre and gimble:
>> On Fri, Aug 3, 2012 at 12:23 AM, Pascal Terjan <pterjan at gmail.com> wrote:
>>> On Sun, Jul 22, 2012 at 1:12 AM, Colin Guthrie <mageia at colin.guthr.ie> wrote:
>>>> OK, so the packages have now all been uploaded.
>>>>
>>>> You should see several packages now that you cannot install on Cauldron.
>>>> This is intended behaviour.
>>>>
>>>> Here is how to update your cauldron systems:
>>>>
>>>>  1. Run "urpmi --auto-update" install everything that can be installed.
>>>>  2. Ensure that latest dracut is installed. Run "urpmi dracut" to make
>>>> sure (it may have been excluded in the --auto-update if it was in a
>>>> transaction with other packages that could not be installed).
>>>>  3. Ensure that you do not have zapata or dpkg installed (rpm -e zapata;
>>>> rpm -e dpkg)
>>>>  4. Generate a new initrd and include the conversion script: dracut -f
>>>> -a convertfs
>>>>  5. If you have /usr on a separate partition
>>>>      - Ensure there is enough free space to hold /bin, /sbin, /lib and
>>>> /lib64 content.
>>>>      - If your /usr is mounted readonly, change your /etc/fstab to mount
>>>> it rw.
>>>>  6. Reboot.
>>>>  7. At the bootloader prompt, edit the command line and append: "rw
>>>> rd.convertfs" (without the quotes) to your command line and then boot.
>>>>
>>>> That should be all that is needed :)
>>>
>>> How to update a chroot?
>>
>> Answering to myself:
>>
>> chroot $chroot urpmi dracut
>> $chroot/usr/lib/dracut/modules.d/30convertfs/convertfs.sh $chroot
>>
>> That did the conversion, but I still can't update, probably because my
>> rpm is too old (rpm-4.9.1.3-2.mga2) as it was not possible to update
>> it before the conversion (it pulls filesystem).
>
> Yeah in this case if the conversion is done, I'd just recommend
> installing filesystem --nodeps and the rest should flow. It's not ideal
> certainly, but there is still time to polish this a bit before upgraders
> get hit by this (and as there will be updated rpm packages in the stable
> releases, it should mitigate this specific problem, but we should still
> see if we can do things better)

Polish this a bit? It is not at all ready, and as I said earlier rpmlib is 
broken. Please don't upload broken rpm packages to stable releases.

Maybe the instructions should be:
   - install dracut and kernel-desktop-latest from mga3
   - reboot, make sure the "usrmove filesystem update"
     kernel entry is chosen in the bootloader
   - upgrade to mga3 as usual

But that means a lot of things are still missing:
   - dracut automatically including the conversion script
     (only when needed?)
   - automatic generation of the bootloader entry mentioned above
   - removal of this bootloader entry after conversion


     Christiaan