removing previously stored generated attributes

Matthieu Patou mat at
Sat Jun 5 09:59:13 MDT 2010

On 05/06/2010 03:49, Andrew Bartlett wrote:
> On Fri, 2010-06-04 at 17:09 +0400, Matthieu Patou wrote:
>> Hi Andrew,
>> On 04/06/2010 15:48, Andrew Bartlett wrote:
>>> On Fri, 2010-06-04 at 09:53 +0400, Matthieu Patou wrote:
>>>> Hello,
>>>> While trying to do it with msds-keyversionnumber I find the pb far from
>>>> being trivial.
>>>> The thing is that with a given provision we have some attributes that
>>>> are marked as automatically generated and that used to be stored in the
>>>> database.
>>>> A search with an "old" provision but new code will return the calculated
>>>> attribute what ever the stored version is.
>>>> So to access to the stored version I have the impression that I should
>>>> go without the modules and access the ldb at the low level.
>>>> Well accessing at low level is not such big problem I think, but if we
>>>> want also to get rid of previously stored values we have also to remove
>>>> old version.
>>>> I can really well remember andrew B. saying that this should not be done
>>>> otherwise we have the risk to broke or mess indexes.
>>> Correct.  It is quite dangerous to access the DB for write access
>>> without the schema loaded.
>> Well loading the schema is useless without the modules I guess. What is
>> the risk when messing with not anymore used attribute ?
> If a reindex is somehow triggered, yes.
After digging in the code I found that it could be possible to add a 
special rule in objectclass to authorize the deletion of a constructed 
attribute when the relax control is used.

What do you think of this idea, it allow to clean our databases without 
going raw access.

Matthieu Patou
Samba Team

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