Ubuntu 14.04 LTS will not install on RAID10 or JBOD

Asked by Steve Hedrick on 2015-01-21

Steps to reproduce:

1- Boot computer (with AMD64 processor) to Ubuntu 14.04 LTS x64 ISO on DVD.
2- Rocketraid 2320 standalone hardware RAID card is already configured in RAID10, on 4 Mushkin solid state drives.
3- Installer package of Ubuntu 14.04 LTS fails to detect RAID array and fails.
4- Attempt to install Ubuntu 14.04 LTS on JBOD RAID array
5- Install fails again when installer package states not enough disk room, when there is 149 gigabytes of free space.
6- Considers installing 4 SSD's directly to motherboard and bypassing the hardware RAID card entirely.
7- Decides to post this question instead.
8- Installs Ubuntu 14.04 LTS to Lenovo T500 laptop instead with absolutely no problems.

Comment: I do understand that running 4 SSD's in RAID10 (or any RAID array) is considered a power user technique. However, some of us are power users and want the ability to simply and easily install Ubuntu to a RAID array. If anyone can help, thank you in advance.

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Steve Hedrick (steve2470) said : #1


I think this solves the problem. However, having the installer do all this for you would be lovely.

If you run:

sudo fdisk -l

Do you see your disks?

Are you not supposed to setup the RAID in the controller then get the installer to use the presented filesystem?

Steve Hedrick (steve2470) said : #3

I admit, I'm a Linux newb. I cannot manage to get the Ubuntu installer to get to a command line. I got to Busybox, but it will not allow sudo.

I will go see if I can install the Linux driver somehow for my RAID array.

Manfred Hampl (m-hampl) said : #4

RE "I cannot manage to get the Ubuntu installer to get to a command line":

I think you have to boot the Ubuntu installation DVD in the "Try Ubuntu without installing" mode,
install the missing raid admin tools,
create your partitions,
and then use the "Install Ubuntu" program that you see on the desktop of the live system.

Steve Hedrick (steve2470) said : #5

I have two options at this point:

1- Remove my RAID card and install an SSD to install Ubuntu on.
2- Find a live CD that can detect my RAID array.

I don't want to do option 1. So far, I've tried Knoppix and Ubuntu, and they both do not detect my RAID array. The RAID array is RAID10, composed of 4 SSD's made by Mushkin.

Manfred Hampl (m-hampl) said : #6

In https://www.howtoforge.com/install-ubuntu-with-software-raid-10 someone described how he had success (with am extra /boot partition).

I think you have to boot the Ubuntu installation kit in the "try Ubuntu" mode, "sudo apt -get install cfdisk mdadm", prepare the partitions and the RAID system, and then install Ubuntu on it.

Can you help with this problem?

Provide an answer of your own, or ask Steve Hedrick for more information if necessary.

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