Drive suddenly disabled but accessible?

[MichaelAnders]

Hi all,

 

I've been playing around all day with Unraid and creating some RAID0 drives for performance reasons.

 

Now, just before I decided to

- merge the last two disks

- assign an existing disk as 2nd parity

- allow a full rebuild

I - luckily - ran unraid again to double check that all is good.

 

But it's not...

 

One of my drives states "device is disabled" - and I'm not sure why? I've also detached the disk from the RAID controller and plugged it into the mobo, didn't change anything.

 

Attached are the diagnostics. HDD in question is Disk 8, sdb

 

From what I can see:

1) SMART looks fine

2) the disk is present in dmesg

3) "dd if=/dev/sdb of=/dev/null" also shows the disk being accessed and I hear it as well

 

Any ideas?

tower-diagnostics-20200609-1610.zip

[JorgeB]

Diags are after rebooting so we can't see what happened, but disk looks fine.

[MichaelAnders]

Thanks for the quick reply!

 

But now you got me confused...

 

The log is from the current state after rebooting and before mounting the disks (which I will now do and back up the disk to another PC).

 

If the disk is fine then why is Unraid stating the disk is disabled?

 

Shouldn't Unraid state "why" disk 8 (although "fine") is disabled? Maybe in some log (I didn't see anything)? If not, would be a great thing to see in the logs something like "disk 8 disabled due to XYZ", making it easier to narrow down the problem.

[itimpi]

A disk gets disabled when a write to it fails for some reason.   How to handle a disabled disk is described here in the online documentation.

[JorgeB]

1 hour ago, MichaelAnders said:

Shouldn't Unraid state "why" disk 8 (although "fine") is disabled?

If it happens again grab the diags before rebooting.

[uDrew]

I got the same problem. 

upc03-diagnostics-20200705-0045.zip

[trurl]

Looks like disk1 has completely disconnected. Check all connections, both ends, SATA and power, including splitters.

 

Then post new diagnostics.

[trurl]

Also looks like emulated disk1 is unmountable. Don't do anything else without further advice.

[uDrew]

This is the second times after I changed the new motherboard because old motherboard (H270-ITX/AC) was broken. 

New motherboard: AION-8800

New expansion card: ORICO PCI-E SATA expansion card with 5 SATA ports 

 

Last time, it reports disk 4 is disable. Then I do the following steps:

1. remove disk 4 from array

2. start array, then stop array

3. add disk 4 to array, start array

4. system rebuild array

5. during rebuilding array, many error was found on Parity, disk 1 and disk 2

6. after finishing rebuilding array, I restart machine. Everything back to normal.

7. I buy a new hard disk try to copy data from array.

8. after several hours, it reports disk 1 is disable.

 

upc03-diagnostics-20200705-0958.zip

[trurl]

Those diagnostics are just a continuation of the previous. You need to shut down and check the connections, reboot and post new diagnostics.

[uDrew]

okay, I did the follow step:

 

1. shut down

2. check the connection is correct

3. turn on the machine

4. all led lights for every SATA port is on

5. generate diagnostics report: upc03-diagnostics-20200705-1311.zip

6. start array

7. generate diagnostics report: upc03-diagnostics-20200705-1313.zip

8. screen capture: Screenshot from 2020-07-05 13-14-55.png

 

thanks a lot! 

upc03-diagnostics-20200705-1313.zip upc03-diagnostics-20200705-1311.zip

[JorgeB]

Check filesystem on the emulated disk1, if contents looks correct after it's fixed, and only if that's true, you can rebuild on top, I would also suggest replacing/swapping cables on disk1 before rebuilding to rule them out.

[uDrew]

I did the following, but drive 1 is still disabled.

 

1.  shutdown machine

2.  change all cables

3. start machine

4. start array with maintenance mode

5. fix disk 1: xfs_repair -d

6. reboot machine

7. start machine with maintenance mode or not (both tried)

8. drive 1 is still disabled.

9. generate diagnostics report: upc03-diagnostics-20200705-1648.zip

10. screen capture: Screenshot from 2020-07-05 16-46-00.png

 

upc03-diagnostics-20200705-1648.zip

[JorgeB]

24 minutes ago, uDrew said:

but drive 1 is still disabled.

Once a disk gets disabled it need to be rebuilt, since the emulated disk is now mounting and if contents look correct you can rebuild on top:

 

https://wiki.unraid.net/Troubleshooting#Re-enable_the_drive