fresh install fails on RAID 1 with failure to update grub

Bug #1328320 reported by Martin G Miller on 2014-06-10
This bug affects 2 people
Affects Status Importance Assigned to Milestone
ubiquity (Ubuntu)

Bug Description

doing a fresh install on an intel z87 motherboard with the intel soft raid set up for RAID 1. The installation only proceeds if I select LVM in the how to install area along with use entire disk. The install prceeds normall until it tries to update the kernel at which point it fails to update grub and the install ceases. I suspect, it has written grub someplace it should not have. IF I try to start the insatall over it says the LVM name is in use.

ProblemType: Bug
DistroRelease: Ubuntu 14.04
Package: ubiquity 2.18.7
ProcVersionSignature: Ubuntu 3.13.0-24.46-generic 3.13.9
Uname: Linux 3.13.0-24-generic x86_64
ApportVersion: 2.14.1-0ubuntu3
Architecture: amd64
CasperVersion: 1.340
Date: Tue Jun 10 00:30:06 2014
InstallCmdLine: BOOT_IMAGE=/casper/vmlinuz.efi file=/cdrom/preseed/ubuntu.seed boot=casper only-ubiquity quiet splash --
LiveMediaBuild: Ubuntu 14.04 LTS "Trusty Tahr" - Release amd64 (20140417)
 PATH=(custom, no user)
SourcePackage: ubiquity
UpgradeStatus: No upgrade log present (probably fresh install)

Martin G Miller (mgmiller) wrote :

Thank you for taking the time to report this bug and helping to make Ubuntu better. Reviewing your log files attached to this bug report it seems that there is a problem with your installation media (CD/DVD). You can verify the integrity of the Ubuntu ISO files you downloaded by following the instructions at You might also retry your installation with new media. In the event that is is not in fact an error with your installation media please set the bug's status back to New. Thanks and good luck!

[This is an automated message. I apologize if it reached you inappropriately; please just reply to this message indicating so.]

Changed in ubiquity (Ubuntu):
status: New → Incomplete
tags: added: ident-mismatch
Martin G Miller (mgmiller) wrote :

There was nothing wrong with the install media.

It only took me about 10 hours to figure out what was going on. It is complex and involves dmraid and mdadm and boot repair as well as manually setting up the partitions in the installer. Grub refuses to install no matter how you set the partitions in the installer, so you have to run boot repair twice to fix everything.

It eventually ends up running in RAID 1 using dmraid.

If you do it right, you can install Ubuntu 14.04 to a software RAID 1, but it is complex. I posted the full instructions on the Ubuntu formus......

It would be nice if the "Something Else" choice in the installer offered to help you set up simple software RAID sets using the included dmraid package. Something to add to Wish List perhaps?

Launchpad Janitor (janitor) wrote :

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

Changed in ubiquity (Ubuntu):
status: Incomplete → Expired
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