Comments on: Software RAID-5: using mdadm in Ubuntu 9.10

By: Linux NAS / Media Server « Petteway's Blog

Linux NAS / Media Server « Petteway's Blog — Fri, 21 Oct 2011 04:46:35 +0000

[...] sources http://bfish.xaedalus.net/2006/11/software-raid-5-in-ubuntu-with-mdadm/ http://www.jamierf.co.uk/2009/11/04/software-raid-5-using-mdadm-in-ubuntu-9-10/ http://www.linuxjournal.com/magazine/monitoring-hard-disks-smart?page=0,2 [...]

By: Mo Firouz

Mo Firouz — Fri, 06 May 2011 00:21:26 +0000

Hello. I was wondering if you were kind enough to read my problem on the ubuntuforum.

http://ubuntuforums.org/showthread.php?p=10775382#post10775382

I followed this post initially to setup my array.
PLEASE PLEASE help!

Thank you

By: Mo Firoz

Mo Firoz — Fri, 06 May 2011 00:20:38 +0000

Hello. I was wondering if you were kind enough to read my problem on the ubuntuforum.

I followed this post initially to setup my array.
PLEASE PLEASE help!

Thank you

By: Roddersg

Roddersg — Sat, 04 Sep 2010 02:50:46 +0000

One of the best tutorials I have ever read. Clear, concise and to the point.
Well done!

Suggestion: How about adding a “recovery” section, i.e. what happens when a drive fails and you need to rebuild the RAID.

By: Jamie

Jamie — Tue, 27 Jul 2010 11:12:38 +0000

This guide is assuming you are using the array to store media or something other than the OS on it. As you’ve read, storing /boot on a software RAID partition wont work – since the RAID is done in software it wont be constructed/mountable at the time /boot is needed.

By: AndyS

AndyS — Tue, 27 Jul 2010 04:00:40 +0000

am i missing something, this seems to be what I want to do, but what I had been reading said that /boot could not be in the raid5 array.

I really hope this is not the case.

Wanted to build a 10.04 ubuntu server with 3 disks in raid5 with a 4th waiting as a spare

By: Dennis

Dennis — Tue, 11 May 2010 13:58:34 +0000

Thanks for the clarification

By: Jamie

Jamie — Fri, 07 May 2010 12:16:38 +0000

Yup mine says the same, as far as I’m aware it’s normal and nothing to be worried about.

By: Dennis

Dennis — Fri, 07 May 2010 11:37:14 +0000

Jamie,

Thanks for the great tutorial. Written in a very informative and concise manner. Managed to get my raid 5 with 3 x 1.5 WD Caviar Green drives up and running. Only issue was that after all the resync and create ext4 partition, I ran fdisk -l to check the array and the message showed no valid partition on md0.

Was worried that this will come back and haunt me in the future and tried to search for a solution thru the web but found most people saying that this is normal.

Do you have the same message as well in your system?

By: Mike

Mike — Tue, 16 Mar 2010 06:21:50 +0000

Great tutorial! Worked like a charm for me. I only used the steps from ‘Creating the array’ and on. I first formatted my drives with GParted. The 5% reserve was included when I first formatted my three hdds. My RAID is all set and running. Is there any way I can get rid of the 5% reserve on each individual hdd without having to rebuild the entire RAID? These are 1.5TB hdds. It took about five hours to build and I would like to skip the process if possible. Any help is greatly appreciated.

Thanks, Mike