On Mon, Sep 07, 2020 at 05:57:13PM +0100, R Davies wrote:
When enumeration is enabled (required due to legacy application), and where
a group has > 1500 members, and AD's MaxValRange is at the default 1500,
then sssd fails to show more than 1500 group members. Group lookups are no
A further interesting aspect is that if the sssd cache is expired (sssctl
cache-expiry -E), then the correct group membership is shown until such
time as enumeration is processed again (i.e. at most
ldap_enumeration_refresh_timeout + memcache_timeout)
src/providers/ldap/sdap.c's sdap_parse_entry() states:
/* This attribute contained range values and needs more to
> * be retrieved
> /* TODO: return the set of attributes that need additional retrieval
> * For now, we'll continue below and treat it as regular values.
As enumeration is enabled the subsequent ASQ/deref work is never
undertaken. As such sssd only ever processes the initial range retrieved
members (0-1499) (NB that nested groups members are evaluated).
there is a fair change that the range handling is missing in a code-path
used by enumeration. Please open a ticket at
for further investigations.
We have looked at the relevant source code, but can't find a way to trigger
Attribute Scope Queries (ASQ)/deref. Indeed, no manner of sssd
configuration settings (other than disabling enumeration - which we sadly
cannot do) appears to change this behaviour. Increasing MaxValRange on AD
defeats the purpose of having MaxValRange.
Has anyone run into this before? Or, should I raise a new issue?
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