[Bug 747888] Re: casper script 25configure_init clobbers 22serialtty, serial console nearly unusable

[Launchpad Bug Tracker]

This bug was fixed in the package casper - 1.326

---------------
casper (1.326) quantal; urgency=low

  * 22desktop_settings:
    - Rename 22screensaver to 22desktop_settings
    - Move 22gnome_panel_data's content to 22desktop_settings
    - Flush overrides in 22desktop_settings to avoid getting duplicate keys
      when using persistence.
    - Check for gsettings-desktop-schemas instead of gnome-panel-data
  * 35fix_language_selector:
    - Use sed against the original file (from rofs) instead of the target file.
      This avoids another case where the change is re-applied at every boot
      when using persistence.
  * 25adduser:
    - Remove RUNNING_UNDER_GDM from /etc/environment which was a big hack
      for back when we still used xscreensaver and was getting appended with
      every single boot.
    - Use /etc/sudoers.d instead of appending to /etc/sudoers, avoid getting
      duplicate lines with every reboot.
  * 23networking:
    - Change default /etc/network/interfaces to match that in /rofs, makes it
      easier to diff /etc when debugging casper.
  * casper-init, casper, 19-keyboard, casper-functions:
    - Remove any remaining reference to usplash as it's been deprecated for a
      long long time and just makes things harder to read.
  * casper-update-initramfs:
    - Exit when called from a non-writable media (cdrom) or when called from
      ubiquity. This fixes a > 1 minute wait when clicking "Try Ubuntu".
  * 19keyboard:
    - Add code to detect that the keyboard layout changed from the previous
      value and flush the gsettings key so that the indicator is properly
      reset. (LP: #946406)
  * 43disable_updateinitramfs:
    - Don't try to chmod a dangling symlink.
    - Only write /usr/sbin/update-initramfs if it doesn't already exist.
  * postinst:
    - Remove code generating symlink for /usr/sbin/update-initramfs to
      /usr/share/casper/casper-update-iniramfs as the diversion and symlinking
      is done in the initramfs and that code was only useful when the shim was
      first introduced. (LP: #984276)
  * scripts/casper:
    - Allow specifying live-media on the command line, helps when booting
      computers that are unable to boot a CD/USB disk. (LP: #423616)
    - Fix NFSOPTS handling by adding the needed comma and sticking it to the
      existing "ro" option of nfsmount (LP: #476208)
  * 22serialtty:
    - Move 22serialtty to 26serialtty to avoid overriding the newly generated
      upstart jobs. Note that this will spawn getty instead of login, but
      it's probably for the best as we need a specific baudrate. (LP: #747888)
 -- Stephane Graber <stgraber at ubuntu.com>   Tue, 02 Oct 2012 18:11:44 -0400

** Changed in: casper (Ubuntu)
       Status: Fix Committed => Fix Released

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https://bugs.launchpad.net/bugs/747888

Title:
  casper script 25configure_init clobbers 22serialtty, serial console
  nearly unusable

Status in “casper” package in Ubuntu:
  Fix Released

Bug description:
  Binary package hint: casper

  I am creating a custom live ubuntu image which defaults to serial console redirection. When I boot the image using a serial console, the console becomes practically unusuable, a screen shot is attached. This is because /etc/init/ttyS0.conf has been overwritten (clobbered) by a casper helper script in the initrd:
  initrd/scripts/casper-bottom/25configure_init

  The clobbering comes from these lines:
  for f in /root/etc/init/tty*; do
        sed -i -e "s|^exec.*|exec env blah=blah /bin/login -f $USERNAME </dev/$(basename $f .conf) > /dev/$(basename $f .conf) 2>\&1|" $f

  since both tty0 and ttyS0 match tty*.

  The easiest solution is if you move casper-bottom/22serialtty to
  casper-bottom/26serialtty, but this requires that the user set the
  serialtty kernel option. Personally, I think this kernel option
  "serialtty" is brilliant - it would be great if that were all you had
  to set to get full serial console redirection (or maybe from
  console=ttyS0,115200n8). But I read in the comments that serialtty is
  just for development and not really for production.

  So probably the best option is to modify 25configure_init with something like this:
  for f in $(ls /root/etc/init/tty* |grep -E tty[[:digit:]]*); do

  Thanks.

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