Hi all, I know I've been an idiot to be honest, My PSU started making a lot of noise so I ordered a replacement, by the time it turned up I had a disk marked as disabled then the USB drive failed. I cannot seem to get the hardware to power up at all now. Presuming the worst and the old hardware is fubar What is my best way forward if any? Is it possible to move the drives (mixture of 6tb and 8tb drives plus 4tb cache drive) to new hardware then restore the latest backup I can find to a new USB drive, then hopefully replace/rebuild the disabled drive? Any helpful suggestions appreciated. 

Thanks

David

Edited December 21, 20241 yr by PistolKnight_UK

Do you have a recent backup of your Unraid Boot drive?   (Try to copy all of the files off it in its 'failed' state.  Report of what happens...)

 

Did you get a chance to install that new PSU?

I installed the new PSU, I have now managed to get the hardware booting again the new psu was faulty so taken one from an old gaming rig.. 

As far as the USB boot drive goes i have tried it in various pc's and nothing will recognise it, it doesn't show in disk management console in windows at all, I also tried it in my 2011 build unraid machine that I still have running and that didn't see the usb drive either. 

The latest usb drive backup I can find is from jan 2023.

I have a brand new samsung usb flash drive just delivered from Amazon.

I have no running dockers or vm's on this array, so am I ok to put the old flash back-up on the new drive then try to rebuild the disabled drive?

 

 

Edited December 22, 20241 yr by PistolKnight_UK
updated

update: my tower is now booting, I am using a new flash drive with the config folder copied over.

 

but it now cant see my parity disk and disk 4 is saying wrong

tower2-diagnostics-20241222-2012.zip

Look for an old diagnostics file or a screenshot/printout of the   MAIN   tab of the GUI.  Anything with a list of the drive assignments.

 

IF that fails, read this section of the Manual:

 

     https://docs.unraid.net/unraid-os/troubleshooting/data-recovery/#lost-array-configuration

Thanks for the replys,

Update: I found that the power cable was bad on the parity drive, swapped it out and replaced the down drive with a new one.  

I have been working on this for 2 days now and really tired LOL

I started the array without thinking straight, the disk I replaced wasn't the precleared disk. FFS

I had 2 replacement disks and started it with the wrong one, It says rebuilding Disk 4 but says Unmountable: Unsupported or no file system.

Shall I cancel and preclear this drive? or let it finish?

sorry to be such a moron!

I am not sure.  Let me ping @JorgeB  and see what he has to say.    At this point, don't do anything more until he (or one of the other Gurus) has time to get back to you.  It is the beginning of the Holiday season and I believe he is in Europe so it may take some time.  You can let the rebuild finish.  (You don't need a precleared disk for a rebuild-- it helps if you are adding a new data disk to the array.)  Whatever was on that physical before you started is now history...

sure thing, thanks for assisting. I'll let it finish the rebuild and see what happens.

Post current diags please.

7 hours ago, JorgeB said:

Post current diags please.

Thanks Jorge, I have attached current diags, it is currently rebuilding the drive but as i said the drive says it is missing the file system. I didn't know whether it best to stop the rebuild and format the drive or what I should do.  I guess when it is finished rebuilding the data that was on being emulated will be gone.

Any help greatly appreciated.

tower2-diagnostics-20241223-1648.zip

this is quite a steep learning curve. just wished I was a bit wiser in the first place.

I appreciate all the help guys.

No filesystem is being detected for that disk, I'll need some more time to analyze the diags and understand what was done, but cancel the rebuild for now, and run memtest, since btrfs is detecting a lot of data corruption

If I understand correctly what was done, it suggests parity wasn't valid, since disk4 is not being correctly emulated, and doesn't even show signs of a previous filesystem, do you still have the old disk intact?

yes, the old disk was marked as disabled and I have just reconnected that as well. I have stopped the rebuild, rebooted and now running memtest.

 

See if the old disks mounts with UD, after memtest.

24 minutes ago, JorgeB said:

If I understand correctly what was done, it suggests parity wasn't valid, since disk4 is not being correctly emulated, and doesn't even show signs of a previous filesystem, do you still have the old disk intact?

As far as I was aware parity was valid at the time that disk 4 went to disabled however the psu started making a lot of noise and was playing up. before I managed to get the new PSU fitted (which was faulty) Disk 4 was offline marked as disabled. I managed to get a PSU working but then the power cable to the parity drive was faulty, I fixed that and the Flash drive was unreadable. 

I got a new Flash drive built it with the latest backup I could find which was quite old. I didn't think I had made any changes since but possibly had. Thats pretty much what has happened so far.

5 minutes ago, JorgeB said:

See if the old disks mounts with UD, after memtest.

will do, Do I need to do multiple passes on Memtest if it shows no errors?

14 minutes ago, PistolKnight_UK said:

I got a new Flash drive built it with the latest backup I could find which was quite old

And were all the devices the same, or did you need to do a new config?

 

10 minutes ago, PistolKnight_UK said:

Do I need to do multiple passes on Memtest if it shows no errors?

Run it for a couple of hours, with so many errors it should find any issues pretty quickly if it's a RAM issue.

devices were the same names yes, I just copied to config folder over from the backup.

I only ran the memtest for just over 1 pass with no errors I will run it again later.

I have mounted the old drive with UD and I can see all my data on it.

I can see crc errors on the drive could these be from when the psu was playing up possibly? I done a quick smart test and it shows no errors

not sure if it helps but here is a new diag with the old drive back in

tower2-diagnostics-20241223-1942.zip

memtest all ok 5 passes over 4 hours

If memtest didn't find errors for now, run a correcting scrub on the cache pool and post the results.

27 minutes ago, JorgeB said:

If memtest didn't find errors for now, run a correcting scrub on the cache pool and post the results.

memtest found 0 errors, To run a correcting scrub on the cache pool, I presume I have to start the array first should I have the original Disk 4 assigned or leave the replacement drive assigned that I aborted the rebuild on assigned?

Sorry I don't have much experience with any of this (wished I did).