[Bug 833783] Re: boot failure: can't open /root/dev/console: no such file

[Scott Moser]

well, after upgrades to the nova installation that I was using, we are
no longer running our images backed by a qcow2 compressed image.
Instead, the root disk is a qcow2 disk backed by a "raw" disk image.
This obviously changes timing conditions as disk reads no longer take
cpu to do decompression.

I've now run 240 instances, and not been able to reproduce this with the
modified ramdisk to catch the output.

-- 
You received this bug notification because you are a member of Ubuntu
Foundations Bugs, which is subscribed to udev in Ubuntu.
https://bugs.launchpad.net/bugs/833783

Title:
  boot failure: can't open /root/dev/console: no such file

Status in “udev” package in Ubuntu:
  Confirmed
Status in “udev” source package in Oneiric:
  Confirmed

Bug description:
  On a nova compute instance running in kvm the initial launch failed,
  with the last bit of the console like:

  Begin: Running /scripts/init-bottom ... [    1.230178] Refined TSC clocksource calibration: 2532.590 MHz.^M
  done.^M
  /init: line 348: can't open /root/dev/console: no such file^M
  [   60.921374] Kernel panic - not syncing: Attempted to kill init!^M
  [   60.922434] Pid: 1, comm: init Not tainted 3.0.0-9-virtual #14-Ubuntu^M
  [   60.923760] Call Trace:^M
  [   60.924236]  [<ffffffff815ea8e3>] panic+0x91/0x194^M
  [   60.925112]  [<ffffffff81062255>] forget_original_parent+0x245/0x250^M
  [   60.926242]  [<ffffffff81062277>] exit_notify+0x17/0x150^M
  [   60.927192]  [<ffffffff81062b7b>] do_exit+0x1fb/0x440^M
  [   60.928164]  [<ffffffff811653a0>] ? vfs_write+0x110/0x180^M
  [   60.929180]  [<ffffffff81062f64>] do_group_exit+0x44/0xa0^M
  [   60.930143]  [<ffffffff81062fd7>] sys_exit_group+0x17/0x20^M
  [   60.930772]  [<ffffffff81608fc2>] system_call_fastpath+0x16/0x1b^M

  
  It would seem that there is a race condition somewhere there, or for some reason /root/dev/console did not exist.

  ProblemType: Bug
  DistroRelease: Ubuntu 11.10
  Package: initramfs-tools 0.99ubuntu2
  ProcVersionSignature: User Name 3.0.0-9.14-virtual 3.0.3
  Uname: Linux 3.0.0-9-virtual x86_64
  Architecture: amd64
  Date: Thu Aug 25 13:52:15 2011
  Ec2AMI: ami-0000004b
  Ec2AMIManifest: FIXME
  Ec2AvailabilityZone: nova
  Ec2InstanceType: <nova.db.sqlalchemy.models.InstanceTypes object at 0x4a49490>
  Ec2Kernel: aki-00000026
  Ec2Ramdisk: ari-00000028
  PackageArchitecture: all
  ProcEnviron:
   LANG=en_US.UTF-8
   SHELL=/bin/bash
  SourcePackage: initramfs-tools
  UpgradeStatus: No upgrade log present (probably fresh install)

To manage notifications about this bug go to:
https://bugs.launchpad.net/ubuntu/+source/udev/+bug/833783/+subscriptions