Clean, Degraded Array

Hi all,

I think i have either a failed or failling drive. For the past week my server has been failing to boot (headless, turned on by WOL) it powers up but always sat there booting. After a few hard power offs and my general laziness in wanting to unplug it and plug a monitor into it i did that tonight.

The boot up sequence showed that 4 out of 5 devices where being used in 'md127' which is the RAID device i assume.

The OMV GUI shows all my disks but the RAID tab only shows 4 devices, it did show a missing one so i unplugged that device and plugged it back in, it appeared a /dev/sdg/ Afte rmoving the machine back downstairs to use my laptop instead of my phone it appeared as /dev/sdd again.

Im unsure if this disk is failing or not? I've seen other mentioning zeroing out the super block and re-adding it to the array to rebuild but not sure if this is the best course of action.

The drives where cheap and second hand from a work colleague so im not too fussed if its dying, but wanted to make sure it was dying first before buying a replacement.

Any tips / steps?

this is my first failure of a RAID array in Linux so im a little cautious.

Cheers

M.

Anyone?

Hi,

Nope the RAID was still marked as degraded. I did a

cat /proc/mdstat/

and it showed that i had a device called 'md126' which was the single 3TB drive on its own. So i stoped it via

mdadm --stop /dev/md126

Then

mdadm --zero-superblock /dev/sdd

I could then recover the RAID via the GUI, it is currently rebuilding but i think the drive is marked as a spare where as before i had all 5 drives as active with no spares. If this works i think i'll just leave it as a spare if its a dodgy drive anyway.

With regard to SMART, im not sure what im looking at, can you give me an pointers that are bad values?

Cheers