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Replacing failed drive

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Posted

Hi all. 

UNRAID Version: 6.4.1, diagnostic files attached. 

 

Disk 4 on my array failed.  A WD 2Tb disk. I installed a new 3Tb drive (my parity drive is also 3Tb) 
Per usual - I have done this before. I followed the instructions here: https://lime-technology.com/wiki/Replacing_a_Data_Drive

 

However - I never got a rebuild option. 

 

Instead I have a Format option under Stop and before Check. 

 

it says: Format will create a file system in all Unmountable disks, discarding all data currently on those disks.
 Yes I want to do this 

 

Drive 4 data is showing up but drive 4 is down right now. 
I have not clicked on Format. 

 

Thank you in advance for any help / advice on how to bring up drive 4 back to normal. 

 

On screen errors. 

 

unRAID array errors: 29-06-2018 22:14
Warning [THEORACLE] - array has errors
Array has 1 disk with read errors

 

Alert [THEORACLE] - Disk 4 in error state (disk dsbl)
ST3000DM008-2DM166_Z505D7A4 (sds)

 

 

Edited by daytona235

  • Community Expert

New disk you're trying to use had lots of ATA errors and got disabled:

 

Jun 29 22:13:45 theoracle kernel: ata18.00: disabled

Since it dropped offline there's no SMART report, check connections and try again, or post new diags after so we can see the SMART report.

 

Disk4 might mount after this is solved since it's complaining about an invalid partition due to the disk dropping offline, but if it doesn't never format.

  • Author

The new disk 3Tb? had errors or the 2Tb that was there before had errors? 

Will try re-seating it. 


Thank you. 

 

  • Community Expert
The new disk 3Tb?

Yes, the new disk

 

 

  • 2 weeks later...
  • Author

Thank you Johnnie.black - ordered another new drive - and all is well. 
What section of which log file should I check so I do not bother you good folks on the forum for this in the future. 

  • Community Expert
24 minutes ago, daytona235 said:

What section of which log file should I check so I do not bother you good folks on the forum for this in the future. 

The part I posted above is when the disks gets disabled, all the preceding ATA errors show the complete problem.

  • Author

Hmm interesting the new (second replacement drive) is demonstrating the same symptom. 
When I first put it in - the indicator next to the drive went blue - then it become a red cross. 

  • Author

New log file. <<DELETED>
 

 

Edited by daytona235

  • Community Expert

Very strange, I see the disk being replaced but no attempt to start the rebuild and no reason for the disk to become disable, can you reboot and try again?

 

You should also upgrade to latest unRAID.

  • Author

Rebooted no luck. 
I am copying the important data to another disk. 

What else can I try? should I try? 

  • Community Expert

You need to repeat the replacement procedure after rebooting, i.e., unassign the disk, start the array, stop the array, re-assign the disk, start the array again, if it fails again post new diags.

  • Author

when my server reboots it tries to go into business as usual is there a way to make the server to not mount all the drives instead wait for me to start the array? 

  • Author

Ignore maintainace mode!

  • Author

Actually no that doesnt do it - I want to reboot the server without it auto starting the array

  • Community Expert
1 minute ago, daytona235 said:

Actually no that doesnt do it - I want to reboot the server without it auto starting the array

You can turn of auto start under Settings->Disk Settings

  • Author

ok did this: 
1. Stop array
2. Unallocate disk 4 - no disk at all

3. Rebooted
4. Stop array 
5. Allocate new 3TB disk - it started to rebuild

6. Fingers crossed

  • Author

Thank you itimpi

  • Author

5.2% rebuilt

 

  • Author

100% rebuilt - thanks everyone. 

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