[Bug 818177] Re: boot failures caused by udev race

[Serge Hallyn]

Quoting James Hunt (818177 at bugs.launchpad.net):
> @Serge: what was your storage configuration when you saw the problem
> without LVs? I think I've seen the problem a couple of times simply by
> providing 2 extra raw disks to the system but at that point my udevd
> debug wasn't helpful. I have tried modifying udevd to continue
> processing events but it then hangs. I really need to be able to
> recreate the problem more reliably on a system I've got control over
> before fathoming this one out.

I have simple vms, created with the vm-new from lp:ubuntu-qa-tools,
whose root disk looks like:

   Device Boot      Start         End      Blocks   Id  System
   /dev/vda1   *        2048    15728639     7863296   83  Linux
   /dev/vda2        15730686    16775167      522241    5  Extended
   /dev/vda5        15730688    16775167      522240   82  Linux swap / Solaris

with vda1 being ext3.

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https://bugs.launchpad.net/bugs/818177

Title:
  boot failures caused by udev race

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

Bug description:
  After running a do-release-upgrade -d on a natty server, I'm unable to
  boot the machine properly.

  It looks like it doesn't see the local disks anymore.

  I think this looks quite a lot like the debbug linked from here:
  https://bugs.launchpad.net/ubuntu/oneiric/+source/linux/+bug/746751

  ProblemType: Bug
  DistroRelease: Ubuntu 11.10
  Package: linux-image-3.0.0-7-server 3.0.0-7.8
  ProcVersionSignature: Ubuntu 3.0.0-7.8-server 3.0.0
  Uname: Linux 3.0.0-7-server x86_64
  AlsaDevices:
   total 0
   crw-rw---- 1 root audio 116,  1 2011-07-29 13:34 seq
   crw-rw---- 1 root audio 116, 33 2011-07-29 13:34 timer
  AplayDevices: Error: [Errno 2] No such file or directory
  Architecture: amd64
  ArecordDevices: Error: [Errno 2] No such file or directory
  AudioDevicesInUse: Error: command ['fuser', '-v', '/dev/snd/seq', '/dev/snd/timer'] failed with exit code 1:
  CRDA: Error: [Errno 2] No such file or directory
  Date: Fri Jul 29 13:40:10 2011
  HibernationDevice: RESUME=UUID=844d17fa-ff69-4250-844b-33b930236c56
  IwConfig:
   lo        no wireless extensions.
   
   eth0      no wireless extensions.
   
   eth1      no wireless extensions.
  MachineType: HP ProLiant DL380 G5
  PciMultimedia:
   
  ProcEnviron:
   LANGUAGE=en_US:
   PATH=(custom, user)
   LANG=en_US
   SHELL=/bin/bash
  ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-3.0.0-7-server root=/dev/mapper/User Name-root ro INIT_VERBOSE=yes
  RelatedPackageVersions:
   linux-restricted-modules-3.0.0-7-server N/A
   linux-backports-modules-3.0.0-7-server  N/A
   linux-firmware                          1.56
  RfKill: Error: [Errno 2] No such file or directory
  SourcePackage: linux
  UpgradeStatus: Upgraded to oneiric on 2011-07-29 (0 days ago)
  dmi.bios.date: 06/28/2007
  dmi.bios.vendor: HP
  dmi.bios.version: P56
  dmi.chassis.type: 23
  dmi.chassis.vendor: HP
  dmi.modalias: dmi:bvnHP:bvrP56:bd06/28/2007:svnHP:pnProLiantDL380G5:pvr:cvnHP:ct23:cvr:
  dmi.product.name: ProLiant DL380 G5
  dmi.sys.vendor: HP

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