[Samba] winbind problem

[samba at nisx.de]

Hi again,

 
I think a have a workaround:

 
Add an local user with ID 3000000 so that winbind never see querys of that ID:

 
useradd -d /tmp -M -s /bin/false -u 3000000 -g 100 -o -l samba4-workaround (Ubuntu 12.04)

 
Ive tested it a few times and it seems to work.

Mit freundlichen Gren
  Thomas Nolte

--
Nolte Infosysteme,  Im Sikfeld 8, 38304 Wolfenbuettel
Tel 05331-946210, Fax 05331-946211, Handy 0170-5508198

Computer, Netzwerk, Kommunikation www.nisx.de

 
Von: semenko at syndetics.net [mailto:semenko at syndetics.net] Im Auftrag von Nick Semenkovich
Gesendet: Dienstag, 16. April 2013 19:48
An: tn
Cc: samba at lists.samba.org
Betreff: Re: [Samba] winbind problem

 
I also have this problem, using a very recent version from git. (see also: http://www.mail-archive.com/samba@lists.samba.org/msg124657.html <http://www.mail-archive.com/samba@lists.samba.org/msg124657.html> )

 
Periodically, winbind seems to simply crash, and getent passwd & other ops (e.g. htop) stall.

 
 
I'd also be happy to provide any debugging information needed. 

 
On Tue, Apr 16, 2013 at 11:29 AM, <samba at nisx.de <mailto:samba at nisx.de> > wrote:

Hi,

I have a problem with winbind, could anyone help me?

Version:
root at leela:~# samba -V
Version 4.0.5
root at leela:~# uname -a
Linux leela 3.2.0-40-generic #64-Ubuntu SMP Mon Mar 25 21:22:10 UTC 2013 x86_64 x86_64 x86_64 GNU/Linux

- First everything went fine:
root at leela:~# getent passwd
root:x:0:0:root:/root:/bin/bash
[...]
FUTURAMA+Administrator:*:0:513::/home/FUTURAMA/Administrator:/bin/bash
FUTURAMA+svtn:*:1008:513:Thomas Nolte as SV:/home/FUTURAMA/svtn:/bin/bash

- For example I change a files owner to root:
root at leela:~# chown 0 /opt/samba/var/shares/profiles/svtn/ntuser.dat

- Everything is still fine:
root at leela:~# ll /opt/samba/var/shares/profiles/svtn/
insgesamt 3224
drwxrws--- 33 FUTURAMA+svtn FUTURAMA+gf    4096 Apr  6 13:39 Anwendungsdaten
[...]
-rw-rw----  1 root          FUTURAMA+gf 3145728 Apr  8 06:54 ntuser.dat
[...]

- Now changing owner to 3000000 (Buildin/Administrator):
root at leela:~# chown 3000000 /opt/samba/var/shares/profiles/svtn/ntuser.dat

- It needs many seconds to work.
root at leela:~# ll /opt/samba/var/shares/profiles/svtn/
insgesamt 3224
drwxrws--- 33 FUTURAMA+svtn FUTURAMA+gf    4096 Apr  6 13:39 Anwendungsdaten
[...]
-rw-rw----  1       3000000 FUTURAMA+gf 3145728 Apr  8 06:54 ntuser.dat
[...]

- And if I look again, all users shown as numbers, not names:
root at leela:~# ll /opt/samba/var/shares/profiles/svtn/
insgesamt 3224
drwxrws--- 33    1008 1016    4096 Apr  6 13:39 Anwendungsdaten
[...]
-rw-rw----  1 3000000 1016 3145728 Apr  8 06:54 ntuser.dat
[...]
root at leela:~#

- And now all samba users gone. winbind -u is empty too.
root at leela:~# getent passwd
root:x:0:0:root:/root:/bin/bash
[...]

- in the logfile I found this:
[2013/04/16 15:44:09,  0] ../lib/util/fault.c:72(fault_report)
  ===============================================================
[2013/04/16 15:44:09,  0] ../lib/util/fault.c:73(fault_report)
  INTERNAL ERROR: Signal 11 in pid 26194 (4.0.5)
  Please read the Trouble-Shooting section of the Samba HOWTO
[2013/04/16 15:44:09,  0] ../lib/util/fault.c:75(fault_report)
  ===============================================================
[2013/04/16 15:44:09,  0] ../lib/util/fault.c:144(smb_panic_default)
  PANIC: internal error

- After restart samba
root at leela:~# stop samba4
root at leela:~# start samba4

- Alll users back now...
root at leela:~# getent passwd
root:x:0:0:root:/root:/bin/bash
[...]
FUTURAMA+Administrator:*:0:513::/home/FUTURAMA/Administrator:/bin/bash
FUTURAMA+svtn:*:1008:513:Thomas Nolte as SV:/home/FUTURAMA/svtn:/bin/bash

Does anyone has an Idea? I've tried an older version (4.0.1) of samba too, same problem.

Regards
  Thomas Nolte
--
Nolte Infosysteme,  Im Sikfeld 8, 38304 Wolfenbuettel
Tel 05331-946210, Fax 05331-946211, Handy 0170-5508198

Computer, Netzwerk, Kommunikation www.nisx.de <http://www.nisx.de> 


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