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[Josep Manel Andrés <1118447@xxxxxxxxxxxxxxxxxx>]

I found what's going on, it looks to me like there is another race
condition between upstart and systemd scripts, sometimes rc.local gets
to mount some of my NFS shares but other times it doesn't. The first
thing I tried was doing a loop until ifconfig was showing a valid
address but it didn't work either, at the time network card got the IP
address the route was not present, so I've done a loop waiting for the
route to be ready, and then mount the volumes.

aux=0

while [ $aux -eq 0 ]; do
  route -n > /tmp/network
  if grep "192.168.40.1" /tmp/network; then aux=1; fi
done

echo "mounting home" >> /tmp/network
mount /home 2>> /tmp/network

echo "mounting data" >> /tmp/network
mount /data 2>> /tmp/network

echo "mounting usr" >> /tmp/network
mount /usr/local 2>> /tmp/network
exit 0

And having /etc/fstab not to mount at startup.

fourier:/export/data    /data   nfs
vers=3,rsize=32768,wsize=32768,nosuid,soft,noauto       0       0

But this is a very quick and dirty solution, any workaround more gentle?

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https://bugs.launchpad.net/bugs/1118447

Title:
  Race condition with network and NFS mounts causes boottime hang

Status in “linux” package in Ubuntu:
  Confirmed
Status in “nfs-utils” package in Ubuntu:
  Incomplete

Bug description:
  I seem to experience a race condition during boot of my ubuntu 12.04 server: In approx. one of seven boots, the server hangs during bootup.
  This is what I see on the screen:

  After the line

   * Starting configure network device

  there is a short delay of about 1 second, then messages continue. I
  see

   * Starting Mount network filesystems [ OK ]
   * Starting set sysctls from /etc/sysctl.conf [ OK ]
   * Starting configure network device [ OK ]
   * Stopping Mount network filesystems [ OK ]
   * Stopping set sysctls from /etc/sysctl.conf [ OK ]
   * Starting Block the mounting event for NFS filesytems until statd is running [ OK ]
   * Stopping Block the mounting event for NFS filesytems until statd is running [ OK ]
   * Starting Block the mounting event for NFS filesytems until statd is running [ OK ]
   * Stopping Block the mounting event for NFS filesytems until statd is running [ OK ]

  The last messages repeats several times, and then the boot process hangs.
  In 6/7 of cases, I wait for a minute, and after that bootup continues.

  But in approx 1/7 cases, the system hangs at this point forever. The
  machine does not respond to CTRL-ALT-DEL, I have to reboot it using
  SysRq-Keys.

  WORKAROUND: Setting the NFS entries in fstab to "noauto" completely removes the problem:
  There is no timeout during boot, and no lockup any more. The machine boote smoothly with the NFS-shares unmounted. After the machine is up, we can manually mount the NFS-shares without a problem.

  ProblemType: Bug
  DistroRelease: Ubuntu 12.04
  Package: linux-image-3.2.0-37-generic 3.2.0-37.58
  ProcVersionSignature: Ubuntu 3.2.0-37.58-generic 3.2.35
  Uname: Linux 3.2.0-37-generic x86_64
  AlsaVersion: Advanced Linux Sound Architecture Driver Version 1.0.24.
  AplayDevices: aplay: device_list:252: keine Soundkarten gefunden ...
  ApportVersion: 2.0.1-0ubuntu17.1
  Architecture: amd64
  ArecordDevices: arecord: device_list:252: keine Soundkarten gefunden ...
  AudioDevicesInUse: Error: command ['fuser', '-v', '/dev/snd/by-path', '/dev/snd/controlC1', '/dev/snd/hwC1D0', '/dev/snd/pcmC1D3p', '/dev/snd/controlC0', '/dev/snd/hwC0D0', '/dev/snd/pcmC0D0c', '/dev/snd/pcmC0D0p', '/dev/snd/pcmC0D1p', '/dev/snd/pcmC0D2c', '/dev/snd/seq', '/dev/snd/timer'] failed with exit code 1:
  CRDA: Error: command ['iw', 'reg', 'get'] failed with exit code 1: nl80211 not found.
  CurrentDmesg: [   85.200104] lxcbr0: no IPv6 routers present
  Date: Thu Feb  7 15:50:40 2013
  HibernationDevice: RESUME=UUID=6c172536-57cc-4deb-867a-0718d572f23e
  IwConfig:
   lo        no wireless extensions.

   eth0      no wireless extensions.

   lxcbr0    no wireless extensions.
  MachineType: To be filled by O.E.M. To be filled by O.E.M.
  MarkForUpload: True
  ProcEnviron:
   LANGUAGE=de:en
   TERM=xterm
   PATH=(custom, no user)
   LANG=de_DE.UTF-8
   SHELL=/bin/bash
  ProcFB: 0 radeondrmfb
  ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.2.0-37-generic root=/dev/mapper/lvmvg-root ro debug splash vt.handoff=7
  PulseList: Error: command ['pacmd', 'list'] failed with exit code 1: Es läuft kein PulseAudio-Dienst oder nicht als Sessiondienst.
  RelatedPackageVersions:
   linux-restricted-modules-3.2.0-37-generic N/A
   linux-backports-modules-3.2.0-37-generic  N/A
   linux-firmware                            1.79.1
  RfKill:

  SourcePackage: linux
  UpgradeStatus: Upgraded to precise on 2012-04-28 (285 days ago)
  dmi.bios.date: 07/04/2012
  dmi.bios.vendor: American Megatrends Inc.
  dmi.bios.version: 0302
  dmi.board.asset.tag: To be filled by O.E.M.
  dmi.board.name: M5A97 EVO R2.0
  dmi.board.vendor: ASUSTeK COMPUTER INC.
  dmi.board.version: Rev 1.xx
  dmi.chassis.asset.tag: To Be Filled By O.E.M.
  dmi.chassis.type: 3
  dmi.chassis.vendor: To Be Filled By O.E.M.
  dmi.chassis.version: To Be Filled By O.E.M.
  dmi.modalias: dmi:bvnAmericanMegatrendsInc.:bvr0302:bd07/04/2012:svnTobefilledbyO.E.M.:pnTobefilledbyO.E.M.:pvrTobefilledbyO.E.M.:rvnASUSTeKCOMPUTERINC.:rnM5A97EVOR2.0:rvrRev1.xx:cvnToBeFilledByO.E.M.:ct3:cvrToBeFilledByO.E.M.:
  dmi.product.name: To be filled by O.E.M.
  dmi.product.version: To be filled by O.E.M.
  dmi.sys.vendor: To be filled by O.E.M.

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