Patches for allowing upgradeprovision to upgrade SD

[Matthieu Patou]

Andrew,

This patch are rebased against current master.

On 27/11/2009 02:55, Matthieu Patou wrote:
> Andrew,
> I integrated your patchs,
> I had a few errors that I fixed in the last 2 patches.
> The whole thing is correctly working now !
>
>
>
>
> On 26/11/2009 19:59, Matthieu Patou wrote:
>> Hello Andrew and Nadya,
>>
>> So following the morning talk we had with andrew regardings SD, I
>> introduced a new control: recalculate_sd that is used in the descriptor
>> module.
>> It is used by the update script to force the recalculation of the SD of
>> an object as if the object was created (well at least it's the intent of
>> it ...).
>>
>> It seems to work pretty well as I've been able to upgrade 2 differents
>> provision from 2 differents times.
>>
>> The script is for the moment making the simplistic but quite ok
>> assumption that nobody has changed the SD set by the provision.
>> This assumption has to be changed but it's to my mind very important to
>> offer to people running alpha8 or older a possibility to update SD as
>> the new acl module is already making a lot of checks (that didn't make
>> my life too simple ...).
>>
>> As it's a bit late I didn't take the time to merge with the change
>> introduced by Andrew on the provision script this morning I'll try to do
>> it tomorrow but andrew feel free to do it if my patches please you !
>>
>> Matthieu.
>