[Samba] CTDB -- manually setting winbind uid with wbinfo

[Bob Cregan]

Hi
         We have a ctdb cluster setup as follows

ctdb version -- surprisingly difficult to determine. I think it is 
1.0.99 (dragged from a include file somewhere, I forget where exactly ). 
If anyone can tell me how to determine this proberly then I would be 
pleased to know.

samba version 3.5.8

I was hoping to be able to set the UID to SID mapping manually using the 
following procedure.

get the SID:

wbinfo -n domain\\<username>
S-1-5-21-1117850145-XXXXXXXX-XXXXXXX-220398 SID_USER (1)

Then set the SID to map to a desired UID rather than the random one chosen

[root at filer01-ph ctdb]# wbinfo 
--set-uid-mapping=198000,S-1-5-21-1117850145-XXXXXXXX-XXXXXXX-220398
Could not create or modify uid to sid mapping
[root at filer01-ph ctdb]

I have tried deleting the old mapping beforehand and clearing the cache

[root at filer01-ph ctdb]# wbinfo -i <domain>\\<username>
<username>:*:100000:100002::/home/<domain>/<username>:/bin/false
[root at filer01-ph ctdb]

[root at filer01-ph ctdb]# net cache flush
[root at filer01-ph ctdb]# net cache list
[root at filer01-ph ctdb]#

[root at filer01-ph ctdb]# wbinfo 
--remove-uid-mapping=100000,S-1-5-21-1117850145-XXXXXXXX-XXXXXXX-220398
Could not remove uid to sid mapping
[root at filer01-ph ctdb]#

[root at filer01-ph ctdb]# wbinfo 
--set-uid-mapping=198000,S-1-5-21-1117850145-XXXXXXXX-XXXXXXX-220398
Could not create or modify uid to sid mapping
[root at filer01-ph ctdb]


Is this a bug or am I misunderstanding how the SID to UID mapping works.

Relevant bits of the smb.conf are below


Thanks

Bob

         usershare allow guests = No
         idmap uid = 100000-200000
         idmap gid = 100000-200000
         winbind rpc only = yes
         winbind enum users = yes
         winbind enum groups = yes
         client use spnego = yes
         client ntlmv2 auth = yes
         encrypt passwords = yes
         winbind use default domain = yes
         winbind refresh tickets = yes
         restrict anonymous = 2
         template homedir = /home/%D/%U
         template shell = /bin/false




-- 
Bob Cregan
Senior Storage Systems Administrator
ACRC
Bristol University
Tel:     +44 (0) 117 331 4421
Mobile: +44 (0) 7712388129