[Bug 1235231] Re: plymouth loses output to /dev/console (such as ci-info: messages)

Scott Moser smoser at ubuntu.com
Wed Nov 20 20:30:51 UTC 2013


Steve,
  Why would you suggest cloud-init as a [source] package for this?
  The fact that plymouth is broken is completely unrelated to cloud-init or ubuntu use as a guest at all.

  Wouldn't it be better to put this package closer to plymouth, so it is
more likely to be updated if ever needed?

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https://bugs.launchpad.net/bugs/1235231

Title:
  plymouth loses output to /dev/console (such as ci-info: messages)

Status in “cloud-init” package in Ubuntu:
  Confirmed
Status in “plymouth” package in Ubuntu:
  Confirmed

Bug description:
  During early boot, plymouth captures writes to /dev/console.  As I
  understand it, it is supposed to re-play that content later.  Whether
  or not it intends to is not the issue.  In our cloud-images (and in
  other cases) users may write data to /dev/console that needs to be
  seen on the other side (ie a serial logger or 'get-console-ouptput'
  api call).

  See the attached 'my-logger.conf' for an upstart job that simply
  writes data early in boot to /dev/console.  Sometimes data "lost" is
  available in /var/log/boot.log, but sometimes it doesn't even seem to
  make it there.  bug 682831 has an attachment 'myhack-init' that does a
  similar thing but starts outputting by replacing /sbin/init and then
  calling /sbin/init itself.

  Related bugs:
   * bug 682831:  lost console output early in boot

  == Original bug report ==
  On precise cloud images, I get a console output line like this:

  ci-info: eth0  : 1 192.168.122.204 255.255.255.0   52:54:00:7f:d8:ca^M

  On saucy cloud images, this is missing.

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