We help IT Professionals succeed at work.
Get Started

ubuntu RAID issue - Software - different data on drives

bmsjeff asked
Last Modified: 2012-07-17
I have no Ubuntu experience, so any help would be grateful.
I was getting this error.
/dev/sda1 clean
fsck 1.40.8
/dev/md0 contains a file system with errors, check forced
Duplicate or bad block in use!
/dev/md0: Multiply-claimed block(s) in inode 8: 24576
/dev/md0: Multiply-claimed block(s) in inode 4981200: 24576

I ran:
df -h
/dev/sda1      19g      749 used      17g available
/dev/md0      128g      27g used      95g available

cat /proc/mdstat
md0 : active raid1 sdb3[1] 134801344 blocks [2/1] [_u]

I ran DLGDIAG on both drives and they are ok.
There was a bad stick of memory that has been removed.

I  run Live CD on Drive0
Errors corrected on Drive0
Drive Boots properly

Live CD on Drive1
Receive error "No usable shell was found on your root file system" on Drive1

When I look at Drive 0, there is no data on it new than 5/2/11
The data was there before I pulled the drives.
I assume this is a problem with the RAID

I ran DiskInternals and saved the Drive1 data to my Windows PC

When I try to boot to Drive1 it just sits there, nothing

What steps should I take?

If if run this on Drive0 alone I get
cat /proc/mdstat
md0 : active raid1 sdb3[0] 134801344 blocks [2/1] [U_]

Could Drive1 be a grub problem?  Not sure what steps to take next.
Watch Question
This problem has been solved!
Unlock 1 Answer and 9 Comments.
See Answer
Why Experts Exchange?

Experts Exchange always has the answer, or at the least points me in the correct direction! It is like having another employee that is extremely experienced.

Jim Murphy
Programmer at Smart IT Solutions

When asked, what has been your best career decision?

Deciding to stick with EE.

Mohamed Asif
Technical Department Head

Being involved with EE helped me to grow personally and professionally.

Carl Webster
CTP, Sr Infrastructure Consultant
Ask ANY Question

Connect with Certified Experts to gain insight and support on specific technology challenges including:

  • Troubleshooting
  • Research
  • Professional Opinions
Did You Know?

We've partnered with two important charities to provide clean water and computer science education to those who need it most. READ MORE