samba - Jun 2011 - getting winbindd errors on OS X Server 10.6.6

All,

I am attempting to  resolve an issue that our OS X Server is having. It's
running 10.6.6 and samba 3.0.28a-apple. In the last two weeks we've been
rebooting this server multiple times a day because it stops responding to smb
requests. A look at the logs reveal the following two error messages repeated
hundreds of times:

6/17/11 6:18:00 PM /usr/sbin/winbindd[231] dnssd_clientstub deliver_request:
socketpair failed 24 (Too many open files)
6/17/11 6:18:00 PM /usr/sbin/winbindd[13089] dnssd_clientstub deliver_request:
socketpair failed 24 (Too many open files)

The messages stop on the reboot and don't come back for a period of time.

We typically have 60-75 clients connected to the system, which hosts files for a
software build system. We don't think there's been a significant change
in the way the clients interact with the server, nor have any software changes
been made on the server.

Any help figuring out what to do next is appreciated!


--
Michael Porter
Senior Desktop Admin and Project Lead
650-357-3415
michael.porter at
efi.com<applewebdata://AED39CAB-3274-4D7E-8D18-10BC6694E14B/michael.porter at
efi.com>

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On Wed, Jun 22, 2011 at 12:54:31PM -0700, Michael Porter
wrote:
> All,
> 
> I am attempting to  resolve an issue that our OS X Server is having.
It's running 10.6.6 and samba 3.0.28a-apple. In the last two weeks we've
been rebooting this server multiple times a day because it stops responding to
smb requests. A look at the logs reveal the following two error messages
repeated hundreds of times:
> 
> 6/17/11 6:18:00 PM /usr/sbin/winbindd[231] dnssd_clientstub
deliver_request: socketpair failed 24 (Too many open files)
> 6/17/11 6:18:00 PM /usr/sbin/winbindd[13089] dnssd_clientstub
deliver_request: socketpair failed 24 (Too many open files)
> 
> The messages stop on the reboot and don't come back for a period of
time.
> 
> We typically have 60-75 clients connected to the system, which hosts files
for a software build system. We don't think there's been a significant
change in the way the clients interact with the server, nor have any software
changes been made on the server.
> 
> Any help figuring out what to do next is appreciated!
You could always just restart winbindd, rather than reboot.
Looks like you're reaching the limit for winbindd clients,
but this is an older (3.0.28a) version of Samba (we're about
to release 3.6.0) and so will be hard to get a fix for.

Jeremy.