Visit Jeremy's Blog.
Go Back > Forums > Linux Forums > Linux - Newbie
User Name
Linux - Newbie This Linux forum is for members that are new to Linux.
Just starting out and have a question? If it is not in the man pages or the how-to's this is the place!


  Search this Thread
Old 02-04-2015, 04:11 AM   #1
LQ Newbie
Registered: Feb 2015
Posts: 3

Rep: Reputation: Disabled
1st post, MDADM Issue

first off, hello all, I'm Gimpacause and I am just starting to use Linux again after about 12 years

I recently bought a Backblaze storage pod and Installed 15x6Tb hard drives (in Raid6+LVM) using this guide

recently due to a faulty UPS and power issues at my place, i have fried the mainboard and boot drive

i dont have anything backed up from my previous Ubuntu install

i have replaced the boot drive installed Ubuntu 14.04 LTS (including MDADM & XFSProgs) installed a replacement mainboard (exact same model/revision) can please someone point me to a guide , or advise how i proceed recovering the raid & lvm so my data is still intact, I have not attempted anything yet for frear of data loss

if you require any logs/information i am hgappy to provide them

many thanks
Old 02-04-2015, 08:58 AM   #2
Senior Member
Registered: Mar 2005
Location: Earth bound to Helios
Distribution: Custom
Posts: 2,524

Rep: Reputation: 319Reputation: 319Reputation: 319Reputation: 319
Use a rescue cd/dvd like system rescue cd. Or from installed Ubuntu setup raid/lvm exactly like the old one. If you can do the step then mount filesystem read only. And get back your data.
Old 02-04-2015, 06:17 PM   #3
LQ Newbie
Registered: Feb 2015
Posts: 3

Original Poster
Rep: Reputation: Disabled
thank you, I will try tonight, is there no way to just rebuild and keep using the array, or do I have to backup and start again, many thanks
Old 02-09-2015, 06:41 AM   #4
LQ Newbie
Registered: Feb 2015
Posts: 3

Original Poster
Rep: Reputation: Disabled
ok so the array is re-syncing now one drive is missing (14/15 UUUUUUUUUUUUUU_)

(i re set up the system like i did before and did a --assemble --force /dev/sd[abcdefghijklmnop] one drive came back as bad superblock so i just took that drive letter out and re-assembled the rest, one i zero the superblock on that faulty drive i'll re add then do another re-sync

i'm guessing i have to re-add that drive then update my MDADM.conf and then update fstabs in that order before i reboot the system or MDADM will just kick off another re-sync, is that correct

thank your for your helo so far


Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is Off
HTML code is Off

Similar Threads
Thread Thread Starter Forum Replies Last Post
my 1st LQ post fxp Member Intro 3 12-22-2014 03:31 PM
My 2nd attempt at a 1st post - the 1st attempt got snafued somehow hawkfeather Member Intro 1 07-13-2013 05:24 AM
hello everyone. 1st post. sabrescythe Member Intro 2 03-01-2012 01:47 AM
1st post Bill VE4UB Member Intro 5 11-18-2010 05:37 PM
1st Post tcort Member Intro 2 08-05-2006 07:35 PM > Forums > Linux Forums > Linux - Newbie

All times are GMT -5. The time now is 05:47 AM.

Main Menu
Write for LQ is looking for people interested in writing Editorials, Articles, Reviews, and more. If you'd like to contribute content, let us know.
Main Menu
RSS1  Latest Threads
RSS1  LQ News
Twitter: @linuxquestions
Facebook: linuxquestions Google+: linuxquestions
Open Source Consulting | Domain Registration