[Bug 773129] Re: upgrading to natty and using mdadm fstab and grub is wrong

Steve Langasek steve.langasek at canonical.com
Sat Nov 5 16:49:31 UTC 2011

What is the mdadm configuration here?  it's not at all obvious why a
device with a non-partitioned device name is being changed to one with a
partitioned device name, without more information about the setup.  LVM
volumes, for example, have undergone no such device name change.

This will presumably affect upgrades from 10.04 to 12.04 as well, so we
should try to get this one fixed for the LTS.

** Changed in: grub2 (Ubuntu)
   Importance: Undecided => High

** Changed in: grub2 (Ubuntu)
       Status: New => Incomplete

** Also affects: grub2 (Ubuntu Precise)
   Importance: High
       Status: Incomplete

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  upgrading to natty and using mdadm fstab and grub is wrong

Status in “grub2” package in Ubuntu:
Status in “grub2” source package in Precise:

Bug description:
  By upgrading with the update-tool from 10.10 to 11.04 the device name get wrong. So the system is not starting.
  dev/mapper/isw_cjbcheejjj_Volume01 does not exist
  The system stop booting and fall back to a simple terminal.
  So im not able to start my system

  Problem caused by:
  The name of the volume is not ..._Volume01, it is ...Volume0p1
  by upgrading the names will be changed

  editing Grub in the Grub menue and changing the name
  editing etc/fstab with terminal-editor 

  My system is running with RAID1 using mdadm

  Sorry for my bad english

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