[Bug 1030292] Re: initramfs does not boot with mdadm (3.2.5-1ubuntu0.1)

[Steve Langasek]

mdadm.conf shows mention of imsm.  And udev thinks there's a dmraid
device here.

UDEV  [11.091082] add      /devices/virtual/block/dm-0 (block)
ACTION=add
DEVLINKS=/dev/disk/by-id/dm-name-isw_bebgaaiie_Volume0 /dev/disk/by-id/dm-uuid-D
MRAID-isw_bebgaaiie_Volume0 /dev/mapper/isw_bebgaaiie_Volume0
DEVNAME=/dev/dm-0
DEVPATH=/devices/virtual/block/dm-0
DEVTYPE=disk
DM_NAME=isw_bebgaaiie_Volume0
DM_STATE=ACTIVE
DM_SUSPENDED=0
DM_TABLE_STATE=LIVE
DM_TYPE=raid

And /proc/mdstat appears to show no arrays.

Dmitrijs, it looks like maybe the imsm support and dmraid are fighting
over the device?

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Title:
  initramfs does not boot with mdadm (3.2.5-1ubuntu0.1)

Status in “mdadm” package in Ubuntu:
  Incomplete

Bug description:
  After upgrading to the mdadm in precise-proposed, all newly created
  initrds do not boot. I'm using a pseudo raid with to harddisks on a
  Sony Vaio Z. Raid level is 0.  I have one  unencrypted boot partition
  and an encrypted root.

  During startup the system asks for the password to decrypt the root
  partition as usual but fails to mount the partition afterwards. I
  always get the message that there are one or more degraded partitions.
  However, with an older version of mdadm everything works perfectly.

  My current solution: Downgrade to latest stable mdadm (precise).

  Please let me know what additional information is required. I can also perform some tests as long as my (prodcutive) system is not in danger.
  --- 
  ApportVersion: 2.0.1-0ubuntu12
  Architecture: amd64
  DistroRelease: Ubuntu 12.04
  InstallationMedia: Ubuntu 11.10 "Oneiric Ocelot" - Release amd64 (20111011)
  MDadmExamine.dev.sda: Error: command ['/sbin/mdadm', '-E', '/dev/sda'] failed with exit code 1: mdadm: cannot open /dev/sda: Permission denied
  MDadmExamine.dev.sdb: Error: command ['/sbin/mdadm', '-E', '/dev/sdb'] failed with exit code 1: mdadm: cannot open /dev/sdb: Permission denied
  MDadmExamine.dev.sdc: Error: command ['/sbin/mdadm', '-E', '/dev/sdc'] failed with exit code 1: mdadm: cannot open /dev/sdc: Permission denied
  MachineType: Sony Corporation VPCZ21C5E
  Package: mdadm 3.2.3-2ubuntu1
  PackageArchitecture: amd64
  ProcEnviron:
   LANGUAGE=en_US:en
   TERM=xterm
   PATH=(custom, user)
   LANG=en_US.UTF-8
   SHELL=/bin/bash
  ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-3.5.0-6-generic root=/dev/mapper/volumegrp01-root ro ^ kopt=root=/dev/mapper/volumegrp01-root quiet splash video=intelfb pcie_aspm=force i915.i915_enable_rc6=1 i915.lvds_downclock=1 i915.i915_enable_fbc=1 vt.handoff=7
  ProcMDstat:
   Personalities : [linear] [multipath] [raid0] [raid1] [raid6] [raid5] [raid4] [raid10] 
   unused devices: <none>
  ProcVersionSignature: Ubuntu 3.5.0-6.6~precise1-generic 3.5.0
  Tags:  precise
  Uname: Linux 3.5.0-6-generic x86_64
  UpgradeStatus: No upgrade log present (probably fresh install)
  UserGroups: adm admin audio cdrom debian-tor dialout lpadmin plugdev sambashare
  dmi.bios.date: 02/09/2012
  dmi.bios.vendor: INSYDE
  dmi.bios.version: R0172H5
  dmi.board.asset.tag: N/A
  dmi.board.name: VAIO
  dmi.board.vendor: Sony Corporation
  dmi.board.version: N/A
  dmi.chassis.asset.tag: N/A
  dmi.chassis.type: 10
  dmi.chassis.vendor: Sony Corporation
  dmi.chassis.version: N/A
  dmi.modalias: dmi:bvnINSYDE:bvrR0172H5:bd02/09/2012:svnSonyCorporation:pnVPCZ21C5E:pvrJ004PS0X:rvnSonyCorporation:rnVAIO:rvrN/A:cvnSonyCorporation:ct10:cvrN/A:
  dmi.product.name: VPCZ21C5E
  dmi.product.version: J004PS0X
  dmi.sys.vendor: Sony Corporation
  etc.blkid.tab: Error: [Errno 2] No such file or directory: '/etc/blkid.tab'

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