Lost Raid 6 array in VM guest running Ubuntu

How to use TestDisk to recover lost partition
Forum rules
When asking for technical support:
- Search for posts on the same topic before posting a new question.
- Give clear, specific information in the title of your post.
- Include as many details as you can, MOST POSTS WILL GET ONLY ONE OR TWO ANSWERS.
- Post a follow up with a "Thank you" or "This worked!"
- When you learn something, use that knowledge to HELP ANOTHER USER LATER.
Before posting, please read https://www.cgsecurity.org/testdisk.pdf
Posts: 1
Joined: 14 Jan 2015, 01:29

Lost Raid 6 array in VM guest running Ubuntu

#1 Post by cheechy »


In need of some direction as I've pretty much lost hope of recovery.

Today I decided to use a tool called Clonezilla to clone my VMware based boot disc so that I could "tinker" with filesystem settings and not screw up my boot disc. So the cloning seem to complete ok, I swapped in the new cloned disc that ESX didn't really agree with so I swapped back. It though seems like the cloned copy modified RAID disks (completely separate disks to the boot) as when I put the original boot disc back in, my RAID 6 array has vanished in a puff of smoke.

So I've tried all sorts of simple checks to see if stuff is recoverable to no avail, being careful not to write anything to the RAID disks to at least try not to make things worse.

Having established the superblocks for all 4 RAID disks could not be found by the OS I've tried Testdisk also to no avail as it cant find any old versions. The server is currently running a deep analysis right now to see what is there - but at least for now Testdisk did see that a ext4 filesystem is there, even if it cant see anything.

So questions from me that I need some guidance on would be - if the testdisk client is installed on the Ubuntu OS and ran from within the client is it a VMFS or an EXT4 based filesystem? Seems to think its ext4 but I'm not sure!

Any other suggestions on what can be done to recover data?

Thanks :cry: