+++ This bug was initially created as a clone of Bug #1970168 +++

[root@ipaserver ~]# echo "vagrant" | ipa trust-add --type=ad ad.test --admin vagrant --password --two-way=true
ipa: ERROR: CIFS server communication error: code "3221225495", message "{Not Enough Quota} Not enough virtual memory or paging file quota is available to complete the specified operation." (both may be "None")
[root@ipaserver ~]# 

Injecting a stack print, the callsite is:

  File "/usr/share/ipa/wsgi.py", line 59, in application
    return api.Backend.wsgi_dispatch(environ, start_response)
  File "/usr/lib/python3.9/site-packages/ipaserver/rpcserver.py", line 296, in __call__
    return self.route(environ, start_response)
  File "/usr/lib/python3.9/site-packages/ipaserver/rpcserver.py", line 308, in route
    return app(environ, start_response)
  File "/usr/lib/python3.9/site-packages/ipaserver/rpcserver.py", line 917, in __call__
    response = super(jsonserver_session, self).__call__(environ, start_response)
  File "/usr/lib/python3.9/site-packages/ipaserver/rpcserver.py", line 517, in __call__
    response = super(jsonserver, self).__call__(environ, start_response)
  File "/usr/lib/python3.9/site-packages/ipaserver/rpcserver.py", line 473, in __call__
    response = self.wsgi_execute(environ)
  File "/usr/lib/python3.9/site-packages/ipaserver/rpcserver.py", line 400, in wsgi_execute
    result = command(*args, **options)
  File "/usr/lib/python3.9/site-packages/ipalib/frontend.py", line 471, in __call__
    return self.__do_call(*args, **options)
  File "/usr/lib/python3.9/site-packages/ipalib/frontend.py", line 499, in __do_call
    ret = self.run(*args, **options)
  File "/usr/lib/python3.9/site-packages/ipalib/frontend.py", line 821, in run
    return self.execute(*args, **options)
  File "/usr/lib/python3.9/site-packages/ipaserver/plugins/trust.py", line 759, in execute
    full_join = self.validate_options(*keys, **options)
  File "/usr/lib/python3.9/site-packages/ipaserver/plugins/trust.py", line 868, in validate_options
    self.trustinstance = ipaserver.dcerpc.TrustDomainJoins(self.api)
  File "/usr/lib/python3.9/site-packages/ipaserver/dcerpc.py", line 1742, in __init__
    self.__populate_local_domain()
  File "/usr/lib/python3.9/site-packages/ipaserver/dcerpc.py", line 1756, in __populate_local_domain
    ld.retrieve(FQDN)
  File "/usr/lib/python3.9/site-packages/ipaserver/dcerpc.py", line 992, in retrieve
    self.init_lsa_pipe(remote_host)
  File "/usr/lib/python3.9/site-packages/ipaserver/dcerpc.py", line 891, in init_lsa_pipe
    self._pipe = self.__gen_lsa_connection(binding)                                                                                                                                                                                                                                                                            
  File "/usr/lib/python3.9/site-packages/ipaserver/dcerpc.py", line 870, in __gen_lsa_connection
    raise assess_dcerpc_error(e)
  File "/usr/lib/python3.9/site-packages/ipaserver/dcerpc.py", line 179, in assess_dcerpc_error
    traceback.print_stack(file=f)

I've previously captured an strace, but it doesn't seem helpful: https://rharwood.fedorapeople.org/strace

I observe no network traffic on any interface, other than: DNS, STP, SSH, LDAP, and HTTPS (on 443).

Tarball of debug logs with debug level 50: https://rharwood.fedorapeople.org/var_log_samba.tar.gz

Should you reproduce this locally, I have a repo: https://github.com/frozencemetery/ad-testing/ (vagrant up ipaserver, vagrant ssh ipaserver, sudo ./install_trust.sh).

I'm personally at a loss as to how to debug this further.  I don't seem to be able to find where the lsa stuff comes from, and no matter which smbd I attach to with gdb (even all of them), I can't seem to catch the connection.  Is it possible that there is no connection, somehow?

--- Additional comment from Andreas Schneider on 2021-07-14 10:03:57 UTC ---

Error loading module '/usr/lib64/samba/idmap/sss.so': /usr/lib64/samba/idmap/sss.so: cannot open shared object file: No such file or directory

looks like idmap_sss is not installed and it can't allocate IDs ...

--- Additional comment from Alexander Bokovoy on 2021-07-14 10:05:02 UTC ---

sssd-winbind-idmap is missing in IPA dependencies, it looks like.