[Bug 991106] Re: Ubuntu 12.04 bootloader installation problem on RAID

[Jacek Kuzemczak]

Hi,

I am having a simial rissue, after upgrading to 12.04 from 11.10 my RAID
array vanished and refused to mount.

Entering the command "sudo dmraid -ay -vvv -d -i" shows this towards the
end of the output.

NOTICE: added /dev/dm-7 to RAID set "sil_biadafcbaiac"
DEBUG: _find_set: searching sil_biadafcbaiac
DEBUG: _find_set: found sil_biadafcbaiac
DEBUG: _find_set: searching sil_biadafcbaiac
DEBUG: _find_set: found sil_biadafcbaiac
NOTICE: added /dev/dm-6 to RAID set "sil_biadafcbaiac"
DEBUG: _find_set: searching sil_biadafcbaiac
DEBUG: _find_set: found sil_biadafcbaiac
DEBUG: _find_set: searching sil_biadafcbaiac
DEBUG: _find_set: found sil_biadafcbaiac
NOTICE: added /dev/sdd to RAID set "sil_biadafcbaiac"
DEBUG: _find_set: searching sil_biadafcbaiac
DEBUG: _find_set: found sil_biadafcbaiac
DEBUG: _find_set: searching sil_biadafcbaiac
DEBUG: _find_set: found sil_biadafcbaiac
NOTICE: added /dev/sdc to RAID set "sil_biadafcbaiac"
DEBUG: checking sil device "/dev/dm-7"
ERROR: sil: wrong # of devices in RAID set "sil_biadafcbaiac" [4/2] on /dev/dm-7
DEBUG: checking sil device "/dev/sdc"
ERROR: sil: wrong # of devices in RAID set "sil_biadafcbaiac" [4/2] on /dev/sdc
DEBUG: checking sil device "/dev/dm-6"
ERROR: sil: wrong # of devices in RAID set "sil_biadafcbaiac" [4/2] on /dev/dm-6
DEBUG: checking sil device "/dev/sdd"
ERROR: sil: wrong # of devices in RAID set "sil_biadafcbaiac" [4/2] on /dev/sdd
DEBUG: set status of set "sil_biadafcbaiac" to 2

Note that dm-7 and sdc are in fact the same disk, the same goes for dm-6
and sdd. Prior to the 12.04 update dmraid would simply ignrore the sd*
disks.

:)

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https://bugs.launchpad.net/bugs/991106

Title:
  Ubuntu 12.04 bootloader installation problem on RAID

Status in “grub2” package in Ubuntu:
  New

Bug description:
  Trying to install Ubuntu 12.04 Desktop x64.

  PC configuration:

  MB: Asus P6T
  HDD Controller: Intel ICH8R (ICH8) SATA RAID Controller
  CPU: Intel Core i7 920
  RAM: 6x2Gb DDR3
  Video: nVidia geForce 250 512Mb

  HDD: 2x320Gb as RAID0
  Partitions: first: ext4, second: ntfs. No swap partition.

  Steps to repeat:
  1. Have similar RAID configuration (I guess any MB-powered RAID0 installation will do the thing)
  2. Try to make a fresh install of Ubuntu 12.04

  I've chosen ext4 as mount point for / during installaton. Checked
  "format" checkbox for it.

  What happens:
  At the end of the installation creation of bootloader failed for root partition (something like /dev/mapper/*******Volume0). After I've presed Ok it offered me to chose another partition. I tried to chose both of /dev/mapper/*******Volume0p1 (there were two of them and two /dev/mapper/*******Volume0p2) with same result. During that process another dialog popped up. It was reporting that installation went fine and system is ready to use. After I've pressed "reboot" button I've got unbootable PC. Had to restore the bootloader manually using 11.10 live flash. After that windows could boot successfully, but fresh installation of 12.04 showed some graphical trash at the screen and completely hanged right after hitting it's grub entry.

  What should happen:
  Like 11.10 it should offer me only three devices: root one, first partition(ext4) and second partition(ntfs) but not six, and it must install the bootlodaer and boot without any problems.

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