[Bug 1210270] Re: nmbd needs restarted on server reboot

[Launchpad Bug Tracker]

Status changed to 'Confirmed' because the bug affects multiple users.

** Changed in: samba (Ubuntu)
       Status: New => Confirmed

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https://bugs.launchpad.net/bugs/1210270

Title:
  nmbd needs restarted on server reboot

Status in “samba” package in Ubuntu:
  Confirmed

Bug description:
  Ubuntu version = 12.04
  samba version = 2:3.6.3-2ubuntu2.6 0

  
  I set up a samba server as a Domain Member Server with AD authentication.  It works fine except that when you restart the server samba services do not work and sudo commands hang for ~5min.  A little debugging revealed that nmbd needed to be restarted before samba would work and to stop sudo commands from hanging:

  kfrank at tserver007:~$ time sudo su -
  root at tserver007:~# smbclient \\\\tserver007\\base -U kfrank
  Enter kfrank's password: 
  session setup failed: NT_STATUS_MORE_PROCESSING_REQUIRED
  did you forget to run kinit?
  root at tserver007:~# exit
  logout

  real	5m29.158s
  user	0m0.220s
  sys	0m0.292s
  kfrank at tserver007:~$ 

  I'm not even sure why it is asking me to run a kerberos command.  I
  don't use kerberos in my build.

  Attached are my smb.conf and level 10 smbd and nmbd log files.

  I did a little more debugging and if I comment out the "wins server"
  line in smb.conf sudo commands don't hang anymore.  Unfortunately I
  need that config to connect to the AD server.

  
  This issue kind of relates with

  https://bugs.launchpad.net/ubuntu/+source/samba/+bug/596064

  which points out that there is a race condition between smbd and nmbd
  at startup.  More specifically that the creation of /var/run/samba
  wasn't being created before nmbd starts.  There's a lot of suggestions
  and fixes that worked for other people so I spent the better part of
  today messing around with /etc/init/nmbd.conf in hopes that nmbd would
  wait for smbd to finish starting up before starting.  I've tried
  changing the start on parameter to

  start on (started smbd)

  which didn't result in anything different after a reboot.  Also tried
  adding a

  mkdir -p /var/run/samba

  at the very beginning of the pre-start script.  This worked in testing
  and even had it on the production server for a couple of days but
  after a while the same problem occurred on reboot.  Tried it without
  the -p flag and got the same results.  The only thing that has gotten
  consistent results so far is to add a

  sleep 1

  before the pre-start script begins.  Now samba works on reboot and
  sudo commands don't hang!  Only problem is that the sleep command
  prevents the pid file for nmbd to not be generated.  So if I feel like
  doing anything with the nmbd service I'm SOL.

  root at tserver007:/etc/init.d# service nmbd stop
  stop: Unknown job: nmbd
  root at tserver007:/etc/init.d# service nmbd status
  status: Unknown job: nmbd
  root at tserver007:/etc/init.d# service nmbd start
  start: Unknown job: nmbd
  root at tserver007:/etc/init.d# service nmbd restart
  stop: Unknown job: nmbd
  start: Unknown job: nmbd
  root at tserver007:/etc/init.d# 

  
  So I decided to get rid of the sleep command.  Currently I just have nmbd restart in rc.local which I know is a bad solution.  Please advise on a better one.

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