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[Launchpad Bug Tracker <880646@xxxxxxxxxxxxxxxxxx>]

[Expired for linux (Ubuntu) because there has been no activity for 60
days.]

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

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https://bugs.launchpad.net/bugs/880646

Title:
  11.04 and up cannot start from RAID/LVM2

Status in “linux” package in Ubuntu:
  Expired

Bug description:
  I have two identical disks set up in a fake RAID configuration through
  the PC BIOS, over which a LVM2 volume where all my partitions live
  except /boot, which is on its dedicated RAID partition.

  After the upgrade to 11.04, when doing a cold restart, /dev/dm-* files aren't found, so the booting halts with an error. Stock 11.04 kernel is used as per uname:
  Linux rihad 2.6.38-8-generic #42-Ubuntu SMP Mon Apr 11 03:31:24 UTC 2011 x86_64 x86_64 x86_64 GNU/Linux

  Apparently the new kernel also messes up the RAID configuration,
  because the array members are then shown as OFFLINE in the BIOS making
  the disks unusable, and nothing short of a cold restart brings them
  back to life.

  Fortunately I was wise enough to have saved the previous distro's
  kernel vmlinuz-2.6.35-28-generic in my GRUB menu, booting into which
  can correctly initialize the LVM2/DM subsystem, and then after doing a
  warm reboot into the newer kernel everything works. So I must do a
  two-phased boot every morning, which sucks.

  Problem persists with:
  http://kernel.ubuntu.com/~kernel-ppa/mainline/v3.2-rc1-oneiric/linux-image-3.2.0-030200rc1-generic_3.2.0-030200rc1.201111071935_amd64.deb

  This is a kernel regression:
  bad: 2.6.37-12.26
  good: 2.6.37-11.25

  ---
  AlsaVersion: Advanced Linux Sound Architecture Driver Version 1.0.24.
  ApportVersion: 1.23-0ubuntu3
  Architecture: amd64
  ArecordDevices:
   **** List of CAPTURE Hardware Devices ****
   card 0: Intel [HDA Intel], device 0: HDA Generic [HDA Generic]
     Subdevices: 1/1
     Subdevice #0: subdevice #0
  AudioDevicesInUse:
   USER        PID ACCESS COMMAND
   /dev/snd/controlC1:  rihad      3074 F.... pulseaudio
   /dev/snd/controlC0:  rihad      3074 F.... pulseaudio
   /dev/snd/pcmC0D0p:   rihad      3074 F...m pulseaudio
  CRDA: Error: [Errno 2] No such file or directory
  Card0.Amixer.info:
   Card hw:0 'Intel'/'HDA Intel at 0xfb100000 irq 46'
     Mixer name	: 'Realtek ID 885'
     Components	: 'HDA:10ec0885,1458a002,00100101'
     Controls      : 15
     Simple ctrls  : 8
  Card1.Amixer.info:
   Card hw:1 'NVidia'/'HDA NVidia at 0xf6000000 irq 17'
     Mixer name	: 'Nvidia GPU 0d HDMI/DP'
     Components	: 'HDA:10de000d,10de0101,00100100'
     Controls      : 16
     Simple ctrls  : 4
  DistroRelease: Ubuntu 11.10
  InstallationMedia: Kubuntu 9.10 "Karmic Koala" - Release amd64 (20091027)
  MachineType: Gigabyte Technology Co., Ltd. P35C-DS3R
  NonfreeKernelModules: nvidia
  Package: linux (not installed)
  ProcEnviron:
   LANGUAGE=
   LANG=en_US.UTF-8
   SHELL=/bin/bash
  ProcKernelCmdLine: root=/dev/mapper/vg0-root ro quiet splash
  ProcVersionSignature: Ubuntu 3.0.0-12.20-generic 3.0.4
  RelatedPackageVersions:
   linux-restricted-modules-3.0.0-12-generic N/A
   linux-backports-modules-3.0.0-12-generic  N/A
   linux-firmware                            1.60
  RfKill:

  Tags:  oneiric
  Uname: Linux 3.0.0-12-generic x86_64
  UpgradeStatus: Upgraded to oneiric on 2011-10-14 (29 days ago)
  UserGroups: adm admin cdrom dialout lpadmin plugdev sambashare tty
  dmi.bios.date: 11/16/2007
  dmi.bios.vendor: Award Software International, Inc.
  dmi.bios.version: F8
  dmi.board.name: P35C-DS3R
  dmi.board.vendor: Gigabyte Technology Co., Ltd.
  dmi.chassis.type: 3
  dmi.chassis.vendor: Gigabyte Technology Co., Ltd.
  dmi.modalias: dmi:bvnAwardSoftwareInternational,Inc.:bvrF8:bd11/16/2007:svnGigabyteTechnologyCo.,Ltd.:pnP35C-DS3R:pvr:rvnGigabyteTechnologyCo.,Ltd.:rnP35C-DS3R:rvr:cvnGigabyteTechnologyCo.,Ltd.:ct3:cvr:
  dmi.product.name: P35C-DS3R
  dmi.sys.vendor: Gigabyte Technology Co., Ltd.

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