[Utnubu-discuss] fakeRAID - I got it working!

Sun May 14 00:25:52 UTC 2006

Hi Phillip,

Please disregard my call for help.  I was able to find the problem by discovering this thread:

https://launchpad.net/distros/ubuntu/+source/initramfs-tools/+bug/22107

I did the following:

1. removed savedefault from default option the grub script
2. updated my initramfs scripts  
	../local-top/dmraid to include the udev prereq
	../initramfs-tools/hooks/dmraid to include 'manual_add_modules dm-mod'

Of course, I'd suggest an update the wiki howto because it was my first stop and a good tutorial.  (https://wiki.ubuntu.com/FakeRaidHowto)

-Matt

Matt Carpenter
Deloitte Consulting, LLP

Tel: +1 404 631 2789
Mobile: + 1 678 523 5005
macarpenter at deloitte.com
www.deloitte.com

> _____________________________________________ 
> From: 	Carpenter, Matthew William (US - Atlanta)  
> Sent:	Friday, May 12, 2006 12:30 PM
> To:	'psusi at cfl.rr.com'
> Cc:	'utnubu-discuss at lists.alioth.debian.org'
> Subject:	fakeRAID - I'm real close!
> Importance:	High
> 
> Hello Phillip,
> 
> I need some help.  I'm a linux newbie and am trying to get ubuntu 6.06 (beta flight 7) to boot from my Silicon Image 3114 PCI-SATARAID controller.  I'm using a striped (RAID 0) configuration.
> 
> First, a big THANK YOU for putting together the fakeRAID HOWTO.  It would be impossible for me to configure my RAID setup without it.  I would have never figured it out.
> 
> ...but I have one problem:  The system doesn't recognize the RAID array at boot time.
> 
> When trying to boot from the array, I get an "Error 15: file not found" after the grub savedefault command runs.  It then pops me into the grub editor to fix it.  If I remove savedefault from the script and boot, I get a graphical ubuntu splash screen, but it doesn't get very far.  "Mounting root file system" hangs.
> 
> When the boot routine drops to the BusyBox shell, I see:
> 
> dm-mod
> no block devices found
> 
> /dev/sda1: read failed after 0 of 1024 at 14610293812:  Input/output error  Unable to find volume group 'sil_agafaiabfeab1
> ALERT! /dev/mapper/sil_agafaiabfeab1 does not exist. Dropping to shell!
> 
> When I'm at the shell prompt, I can manually execute "modprobe -q dm-mod" and it doesn't give me the "no block devices found" message.  It just goes to the next shell prompt without any message.  Next, I run "dm-raid -ay" and the raid device is found and listed on the console.  I then 'exit' the shell and it boots successfully!!
> So, what do you think the problem might be?
> Here's how I got where I'm at:
> 
> I performed all of the steps in the howto.  When installing ubuntu on the array, I let the graphical installer partition and format the array.
> 
> One minor difference when I was performing the steps, when installing dmraid into the new OS, here:
> 
> apt-get install ubuntu-base linux-386 ubuntu-desktop dmraid grub
> # when prompted whether you want to stop now, say no (we will later be fixing the issue that the system is talking about)
> # when prompted whether to create a symbolic link, say yes.
> 
> I did not get question to create a symbolic link here.  So, I don't know if I have the link I need or not.
> 
> Of course, I'd really appreciate any help - I'm just getting into Linux and starting out with ubuntu.  I'm really excited because the thing just looks great.  If I can make it over this speedbump, I'll be leaving Windows for sure!
> 
> 
> Matt Carpenter
> Deloitte Consulting, LLP
>  
> Tel: +1 404 631 2789
> Mobile: + 1 678 523 5005
> macarpenter at deloitte.com
> www.deloitte.com
> 

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