Re: automatic uidnumber overlay

[joel reed <joelwreed@gmail.com>]

Howard Chu wrote:
> Joel Reed wrote:
> > The attached uidnumber.c overlay intercepts ADD requests for entries
> > with a posixAccount objectclass that do not have a uidNumber. When such
> > ADD requests are found, the overlay searches the directory for the
> > largest uidNumber, then automatically adds a uidNumber attribute of
> > largest+1 to the entry being added.
>
> Interesting. Perhaps instead, your overlay should just maintain a fixed 
> entry with a copy of the largest uidNumber in it, instead of searching 
> the entire tree all the time.

I did consider this, but didn't implement it because I was thinking 
about running in an N-Way Multi-Master configuration. On further 
reflection, this scheme would probably still not support such a 
configuration under load.

Obviously, the approach I took doesn't scale well as you point out. I 
think I will punt on supporting N-Way Multi-Master configs and either 
use the approach you note above or the sambaUnixIdPool approach noted 
elsewhere in this thread.

Thanks to everyone who provided feedback. Greatly appreciated.

jr