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Old 02-04-2015, 04:11 AM   #1
gimpacause
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Registered: Feb 2015
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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
veerain
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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
gimpacause
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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
gimpacause
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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
 
  


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