[Bug 211631] Re: Network is brought down before network filesystems are unmounted (CIFS timeout at shutdown)

[David A. Rountree]

I still have a hang on reboot / shutdown even after installing the more
recent netbase (4.45ubuntu3) and dbus (1.4.8-3ubuntu2) packages on my
Kubuntu 11.04 laptop.  I have four cifs shares defined in fstab.  If I
shutdown or reboot, I see network-manager caught signal 15, then a
message about dbus, then modem-manager caught signal 15, then modem-
manager restarts and load a bunch of plugins, then restarts again and
again loads a bunch of plugins after several seconds' pause, and then
the system hangs.  If I unmount the network shares before shutting down
/ rebooting ("sudo umount - a"), the sequence is the same, except that
after the second time modem-manager starts up, there's message about
dbus that flashes briefly on the screen just before the power cycles off
(so no hang if I unmount the network shares).

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https://bugs.launchpad.net/bugs/211631

Title:
  Network is brought down before network filesystems are unmounted (CIFS
  timeout at shutdown)

Status in NetworkManager:
  New
Status in NULL Project:
  Invalid
Status in “dbus” package in Ubuntu:
  Fix Released
Status in “dhcdbd” package in Ubuntu:
  Invalid
Status in “netbase” package in Ubuntu:
  Fix Released
Status in “network-manager” package in Ubuntu:
  Confirmed
Status in “samba” package in Ubuntu:
  Invalid
Status in “sysvinit” package in Ubuntu:
  Invalid
Status in “wpasupplicant” package in Ubuntu:
  Confirmed
Status in “dbus” source package in Lucid:
  New
Status in “dhcdbd” source package in Lucid:
  Invalid
Status in “netbase” source package in Lucid:
  New
Status in “network-manager” source package in Lucid:
  New
Status in “samba” source package in Lucid:
  New
Status in “sysvinit” source package in Lucid:
  New
Status in “wpasupplicant” source package in Lucid:
  New
Status in “dbus” source package in Natty:
  New
Status in “dhcdbd” source package in Natty:
  Invalid
Status in “netbase” source package in Natty:
  New
Status in “network-manager” source package in Natty:
  New
Status in “samba” source package in Natty:
  New
Status in “sysvinit” source package in Natty:
  New
Status in “wpasupplicant” source package in Natty:
  New
Status in “sysvinit” package in Debian:
  New

Bug description:
  IMPORTANT: this bug has enough information; please don't post
  _anything_ unless a developer asks for specific feedback! By posting
  to this bug you only make it harder for a developer to spot the gem
  comments. Please use the "me too feature" of launchpad to signal that
  you are affected and would like to see this fixed.

  I installed smbfs,and then put some entries into /etc/fstab, so they automount on startup. An example of this is here:
  //<ip address of nas box>/<share name>  /home/hamish/<directory name>  cifs  credentials=/home/hamish/.smbcredentials,file_mode=0777,dir_mode=0777,uid=1000,gid=1000  0  0

  ** note the use of "cifs" in the lines above **

  (The username and password are in the .smbcredentials file)

  On startup, for each entry in the /etc/fstab file, I get the following in dmesg:
  [   70.495504]  CIFS VFS: Error connecting to IPv4 socket. Aborting operation
  [   70.495569]  CIFS VFS: cifs_mount failed w/return code = -101
  But the shares are mounted, and a nautilus session opens up (which is also annoying...)

  Also logging off with CIFS shares mounted in /etc/fstab, it sits with an error message:
  CIFS VFS: server not responding
  CIFS VFS: no response for cmd 50 mid <this number changes>
  And takes about 2 minutes to timeout. This also happened with Gutsy

  Should the timing of the mounting and dismounting be changed so that
  it works? It is related to the starting of network-manager and CIFS
  shares trying to connect on startup *before* the network is up, and
  dismounting the shares *after* network-manager is stopped.

  Hamish