[Samba] Winbindd filling log file with " final write to client failed: Broken pipe"

[Gabriele Paggi]

Hello,

I've set up winbindd to authenticate local users against our active
directory servers and everything works fine.
I see plenty of the following lines in my logs and I'm wondering if
someone can help me troubleshooting this:

[2011/03/31 15:15:02, 10]
winbindd/winbindd_cache.c:cache_retrieve_response(2666)
  Retrieving response for pid 8749
[2011/03/31 15:15:02,  7]
winbindd/winbindd_idmap.c:winbindd_sid2gid_async(351)
  winbindd_sid2gid_async: Resolving
S-1-5-21-2615388863-3808077908-615857747-2195 to a gid
[2011/03/31 15:15:02, 10] winbindd/winbindd_dual.c:async_request(125)
  Sending request to child pid 8749 (domain='')
[2011/03/31 15:15:02, 10]
winbindd/winbindd_cache.c:cache_retrieve_response(2666)
  Retrieving response for pid 8749
[2011/03/31 15:15:02,  2] winbindd/winbindd.c:remove_client(744)
  final write to client failed: Broken pipe
[2011/03/31 15:15:02,  2] winbindd/winbindd.c:remove_client(744)
  final write to client failed: Broken pipe

Researches on the internet didn't help as this kind of error are
always associated with some functionality not working at all, but
that's not my case (apparently).

Versions:
OS: RHEL 5.5
smbd: Version 3.3.8-0.52.el5_5
winbind: Version 3.3.8-0.52.el5_5

This is my smb.conf:

[global]
   workgroup = XXX
   password server = YYY, ZZZ
   realm = XXX.KKK.NET
   security = ads
   template homedir = /home/%U
   template shell = /bin/bash
   winbind use default domain = true
   winbind offline logon = true
   winbind cache time = 120

    #log level = 0 winbind:10

   ldap connection timeout = 2
   ldap timeout = 2
   keepalive = 300

   load printers = no
   printing = bsd
   printcap name = /dev/null
   disable spoolss = yes

   client schannel = auto
   allow trusted domains = no
   idmap uid = 33554432 - 4294967295
   idmap gid = 33554432 - 4294967295
   idmap config XXX : default = yes
   idmap config XXX : backend = rid
   idmap config XXX : range = 1000 - 33554431
   idmap cache time = 604800

Any help is, of course, highly appreciated :)

Cheers,
Gabriele