[Samba] winbind causing huge timeouts/delays since 4.8

Ralph Böhme slow at samba.org
Tue Feb 26 11:49:42 UTC 2019

On Tue, Feb 26, 2019 at 12:45:45PM +0100, Björn JACKE via samba wrote:
>On 2019-02-25 at 11:32 +0000 Rowland Penny via samba sent off:
>> > (I take it xid stands for both uid and gid?)
>> No, I think it was chosen to differentiate them from uidNumber &
>> gidNumber attributes, they are similar but not the same. They also only
>> exist on DC's
>in Windows the owner of a file can be a group.
>In the unix world the main owner is always a user.
>To reflect the fact that the owner can be a group also, winbind
>can assign both a mapped uid number and a gid number for Windows
>users and groups, both uid and gid have the same value and are the xid. That
>way Samba can also assign the ownership of files to a group. The idmap backend
>has to be able to support XID though, not all idmap backends do so.

in particular idmap_autorid, idmap_rid and idmap_script support this so called 
mode, idmap_ad doesn't.


Ralph Boehme, Samba Team                https://samba.org/
Samba Developer, SerNet GmbH   https://sernet.de/en/samba/
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