[Bug 872250] Re: if init-bottom/udev fails, system silently fails to boot

[Eduard Hasenleithner]

According to a pointer from Steve Langasek and the manpage of initramfs-
tools(5) one can do:

/sbin/frobnicate "/dev/mapper/frobb" || panic "Frobnication failed"

which translates to

udevadm control --exit || panic "udev exit failed (http://some-wiki-
page)"

for the init-bottom/udevd script. This could be considered to be a fix
for this bug.

There is still the question of extending the scope of this bug. IMHO any
failure within the initramfs phase is worth a 'panic'. This would even
make the point of adding 'panic' to the call_scripts function within
scripts/functions for cases when a called script returns with error
code.

(N.B. For testing, I tried to unconditionally call 'panic' in init-
bottom/udev, but it just said something like "panic: command not found".
The system did boot normally!)

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Title:
  if init-bottom/udev fails, system silently fails to boot

Status in “udev” package in Ubuntu:
  New

Bug description:
  This is a follow-up report on Bug #818177. If during the initramfs phase of a boot the init-bottom/udev script fails, the system will not (properly) boot. This report is not about fixing this potential problem, but about the fact that the user is not informed explicitly enough about this critical event. Potential results:
  * filesystems not mounted properly (See Bug #870031)
  * System does boot, but unknown side-effects happen. Due to lack of (flashy) reporting, identifying the root-cause (init-bottom/udev) might turn out to be hard
  * Logs of bug reports filed to the wrong packages

  ProblemType: Bug
  DistroRelease: Ubuntu 11.10
  Package: udev 173-0ubuntu4
  ProcVersionSignature: Ubuntu 3.0.0-12.20-generic 3.0.4
  Uname: Linux 3.0.0-12-generic x86_64
  ApportVersion: 1.23-0ubuntu2
  Architecture: amd64
  CustomUdevRuleFiles: ws444pc.rules
  Date: Tue Oct 11 14:09:18 2011
  InstallationMedia: Ubuntu 11.10 "Oneiric Ocelot" - Alpha amd64 (20110705.1)
  MachineType: System manufacturer System Product Name
  ProcEnviron:
   LANGUAGE=de_AT:de
   PATH=(custom, user)
   LANG=de_AT.UTF-8
   SHELL=/bin/bash
  ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.0.0-12-generic root=UUID=77149c3f-f2f2-40f8-a4f7-44d69f3f186b ro
  SourcePackage: udev
  UpgradeStatus: Upgraded to oneiric on 2011-09-13 (27 days ago)
  dmi.bios.date: 11/21/2008
  dmi.bios.vendor: American Megatrends Inc.
  dmi.bios.version: 1406
  dmi.board.asset.tag: To Be Filled By O.E.M.
  dmi.board.name: M3A32-MVP DELUXE
  dmi.board.vendor: ASUSTeK Computer INC.
  dmi.board.version: Rev 1.xx
  dmi.chassis.asset.tag: Asset-1234567890
  dmi.chassis.type: 3
  dmi.chassis.vendor: Chassis Manufacture
  dmi.chassis.version: Chassis Version
  dmi.modalias: dmi:bvnAmericanMegatrendsInc.:bvr1406:bd11/21/2008:svnSystemmanufacturer:pnSystemProductName:pvrSystemVersion:rvnASUSTeKComputerINC.:rnM3A32-MVPDELUXE:rvrRev1.xx:cvnChassisManufacture:ct3:cvrChassisVersion:
  dmi.product.name: System Product Name
  dmi.product.version: System Version
  dmi.sys.vendor: System manufacturer

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