[Samba] samba4 eventually stops working

[Aaron Solochek]

I'm running samba4 from git (latest as of sep 1) on ubuntu 10.4.  It's
operating as a PDC, as well as hosting a shared drive.

The last couple days I've noticed that my shared drives will appear as
disconnected, and indeed trying to connect to the server times out.  If
I look on the server, there are many (50ish) samba processes all sitting
there sleeping.  If I use the init script to shutdown samba, one of
those processes will remain.  I need to kill -9 it to make it go away.

Then I can restart samba and everything is happy again.

I'm not sure what exactly causes it, but I suspect it has to do with my
profile that syncs for a while, then starts giving errors in the event
log of the network resource going away.  So perhaps under the load of my
profile sync something fails, hanging all the samba processes.

My samba was configured with configure.developer, so I assume I have a
lot of debugging available somehow, but I'm not even sure where to start.

Thanks.

-Aaron