[Bug 578851] Re: Fail to remount root on nfsroot install

[Steve Langasek]

*** This bug is a duplicate of bug 537133 ***
    https://bugs.launchpad.net/bugs/537133

** This bug has been marked a duplicate of bug 537133
   mountall issues with NFS root filesystem

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https://bugs.launchpad.net/bugs/578851

Title:
  Fail to remount root on nfsroot install

Status in “mountall” package in Ubuntu:
  New

Bug description:
  Binary package hint: upstart

  Description:	Ubuntu 10.04 LTS
  Release:	10.04

  After upgrade from Karmic to Lucid on an nfsroot install, reboot failed.
  The initramfs loaded properly, but after switching to init, the screen switched to the framebuffer and hung with a message about portmap exit status 1

  I then switched the boot to use init=/bin/bash
  I see that the root filesystem is mounted correctly, read-only
  I run exec /sbin/init
  and get hung with a message about plymouth-splash exiting status 2

  if I manually remount the filesystem rw, I can then exec /sbin/init
  and the system starts properly

  In the end, I added 'rw' to the boot parameters such that root is mounted rw by initramfs (and removed he init= parameter), then boot works properly.
  As it worked fine in Karmic without this, it seems like something in init is preventing the filesystem from remounting read-write

  My fstab file:
  proc            /proc           proc    defaults        0       0
  /dev/nfs        /               nfs     rw,nolock          0       0
  none            /tmp            tmpfs   defaults        0       0
  none            /var/run        tmpfs   defaults        0       0
  none            /var/lock       tmpfs   defaults        0       0
  none            /var/tmp        tmpfs   defaults        0       0

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