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[Brad Figg <brad.figg@xxxxxxxxxxxxx>]

This bug is missing log files that will aid in diagnosing the problem.
>From a terminal window please run:

apport-collect 1311987

and then change the status of the bug to 'Confirmed'.

If, due to the nature of the issue you have encountered, you are unable
to run this command, please add a comment stating that fact and change
the bug status to 'Confirmed'.

This change has been made by an automated script, maintained by the
Ubuntu Kernel Team.

** Changed in: linux (Ubuntu)
       Status: New => Incomplete

** Tags added: trusty

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https://bugs.launchpad.net/bugs/1311987

Title:
  deploy-ironic ramdisks do not boot:  Failed to execute /init (error
  -28)

Status in Openstack disk image builder:
  Triaged
Status in “linux” package in Ubuntu:
  Incomplete

Bug description:
  The default ubuntu release for ramdisks was bumped to Trusty
  https://review.openstack.org/#/c/88384/  Ironic + devstack deployments
  stopped functioning.  The ramdisk fails to run init, crashing with the
  following error:

  [   23.154016] Failed to execute /init (error -28)
  [   23.154909] Starting init: /sbin/init exists but couldn't execute it (error -28)
  [   23.156388] Starting init: /bin/init exists but couldn't execute it (error -28)
  [   23.157490] Starting init: /bin/sh exists but couldn't execute it (error -28)
  [   23.160313] Kernel panic - not syncing: No working init found.  Try passing init= option to kernel. See Linux Documentation/init.txt for guidance.
  [   23.164146] CPU: 0 PID: 1 Comm: swapper/0 Not tainted 3.13.0-24-generic #46-Ubuntu
  [   23.164146] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
  [   23.164146]  0000000000000000 ffff88001a3a9ec0 ffffffff81715a64 ffffffff81a39f38
  [   23.164146]  ffff88001a3a9f38 ffffffff8170ec65 0000000000000008 ffff88001a3a9f48
  [   23.164146]  ffff88001a3a9ee8 ffffffff81a39a38 0000000013981396 0000000000001396
  [   23.164146] Call Trace:
  [   23.164146]  [<ffffffff81715a64>] dump_stack+0x45/0x56
  [   23.164146]  [<ffffffff8170ec65>] panic+0xc8/0x1d7
  [   23.164146]  [<ffffffff81703f40>] ? rest_init+0x80/0x80
  [   23.164146]  [<ffffffff81704062>] kernel_init+0x122/0x130
  [   23.164146]  [<ffffffff8172637c>] ret_from_fork+0x7c/0xb0
  [   23.164146]  [<ffffffff81703f40>] ? rest_init+0x80/0x80
  [   23.164146] general protection fault: fff2 [#1] SMP
  [   23.164146] Modules linked in:
  [   23.164146] CPU: 0 PID: 1 Comm: swapper/0 Not tainted 3.13.0-24-generic #46-Ubuntu
  [   23.164146] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
  [   23.164146] task: ffff88001a3a0000 ti: ffff88001a3a8000 task.ti: ffff88001a3a8000
  [   23.164146] RIP: 0010:[<ffffffff8170ed30>]  [<ffffffff8170ed30>] panic+0x193/0x1d7
  [   23.164146] RSP: 0000:ffff88001a3a9ed0  EFLAGS: 00000246
  [   23.164146] RAX: 0000000014a814a8 RBX: ffffffff81a39f38 RCX: 0000000000000854
  [   23.164146] RDX: 00000000000014a8 RSI: 0000000000000000 RDI: 0000000000000046

  #define ENOSPC      28  /* No space left on device */

  Setting DIB_RELEASE=saucy fixes the issue.    A saucy ramdisk is 83M
  compressed, 238M decompressed.  trusty ramdisk is 87M compressed, 245M
  decompressed.

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