[Bug 787755] Re: Samba does not notice added or removed CUPS printers

[Dave Walker]

** Changed in: samba (Ubuntu)
   Importance: Undecided => Medium

-- 
You received this bug notification because you are a member of Ubuntu
Foundations Bugs, which is subscribed to samba in Ubuntu.
https://bugs.launchpad.net/bugs/787755

Title:
  Samba does not notice added or removed CUPS printers

Status in “samba” package in Ubuntu:
  New

Bug description:
  Binary package hint: samba

  Our environment uses a CUPS server that is separate from the machine
  running Samba; the Samba machine has an /etc/cups/client.conf with
  the ServerName of the CUPS server. In this setting, Samba does not
  notice when you add or remove a CUPS printer, although 'lpstat -v'
  and so on on the machine running Samba will show the changed printer
  list. Reloading Samba (smbd) does not change this situation; only
  restarting smbd makes Samba update the printer list.

  It is possible that this bug also happens if the CUPS server is
  running on the same machine as the Samba server, but I have not
  tested that.

  Ubuntu release: Ubuntu 10.04 LTS 32-bit x86, with all current updates.
  Samba version: 2:3.4.7~dfsg-1ubuntu3.6
  CUPS version: 1.4.3-1ubuntu1.3

  (This probably reproduces on all architectures, but I haven't tested.)

  How to reproduce:
  - configure a CUPS server machine and set up a printer.
  - install a stock Ubuntu 10.04 machine. Create an /etc/cups/client.conf
    on it that has 'ServerName <IP-of-CUPS-server>'. Verify that Unix
    printing works.
  - Install Samba: 'apt-get install samba smbclient'
  - edit /etc/samba/smb.conf to add 'printcap cache time = 10' to the
    '[ global ]' section. Restart Samba.
  - Use 'smbclient -L localhost' to verify that you see the printer from
    your CUPS server.
  - add a printer to your CUPS server. Wait 30 seconds and run
    'smbclient -L localhost' again, and see that it does not show the new
    printer. 'lpstat -v' and printing to it from Unix will work, though.
  - optionally, 'reload smbd' and repeat the 'smbclient -L localhost' to
    demonstrate that the reload did not change the situation.
  - 'service smbd restart', repeat 'smbclient -L localhost', and the new
    printer is now present.
  - delete the printer on the CUPS server, and rerun 'smbclient -L localhost';
    Samba still lists the printer.

  (The convenient way to add a new printer is just to add a new name for
  your existing printer, duplicating destination settings and so on.)

  What I expected to happen: 'smbclient -L localhost' lists the new
  printer when it is added and does not list it when it is removed.

  This behavior is a regression from Ubuntu 8.04 (samba version
  3.0.28a-1ubuntu4.14). I have not tested intermediate non-LTS
  releases to determine where the problem first appears.

  Since your Samba bug reporting page specifically asks for this
  information:

  $ dpkg-query -W -f='${Package} ${Version} ${Source} ${Status}\n' | grep samba
  libsmbclient 2:3.4.7~dfsg-1ubuntu3.5 samba install ok installed
  libwbclient0 2:3.4.7~dfsg-1ubuntu3.5 samba install ok installed
  samba 2:3.4.7~dfsg-1ubuntu3.5  install ok installed
  samba-common 2:3.4.7~dfsg-1ubuntu3.5 samba install ok installed
  samba-common-bin 2:3.4.7~dfsg-1ubuntu3.5 samba install ok installed
  smbclient 2:3.4.7~dfsg-1ubuntu3.5 samba install ok installed

  The Samba log files in /var/log/samba contain no information; log.smbd
  and log.nmbd have only startup notices, and the log.<client> file is
  empty (0 length). I can include them if you really need them.

  I'm attaching 'smbclient -L' output, and also /etc/samba/smb.conf
  and 'testparm -s' output, although the latter two will probably be
  mostly pointless (since I've given instructions on how to construct
  the smb.conf above).

To manage notifications about this bug go to:
https://bugs.launchpad.net/ubuntu/+source/samba/+bug/787755/+subscriptions