OK, so here goes.

My Unraid system is 6.7.0 and has been running great until I received a 'missing disk' message.

Checked all the connections but then experienced random lost connections to the network, plus on re-boot, would stick at '92' on the motherboard disply.

Bought a new disk, removed the 'missing' one, pre-cleared it etc. Now, when I manage to get the webgui up I cannot start the array.

The new drive shows up as OK, but it still tells me the old disk is 'missing' and I'm getting errors showing up on another one of my disks. (Does that mean I have to put the old one back in?). So all I get now is 'Invalid expansion' and 'You may not add new disks and remove exisiting disks'

Any help would be greatly appreciated as I don't want to lose all my files.

Thanks.

tower-diagnostics-20190609-0908.zip tower-smart-20190609-1021.zip

Disk5 is disabled and disk6 is missing, you only have single parity, so if you can't get disk6 back you can't rebuild disk5.

Can't get disk 6 back. Does that mean I have to do a 'New config' ?

You can, but doing a new config will create a new array, losing the data on the emulated disk 5 and disk 6, though you can still use old disk5 assuming that one is OK.

Thanks very much for the info.

The sequence of events which I did not make clear:- (sorry, I'm getting confused now as well)

Disk 7 suddenly became unusable/corrupt/damaged.... with lots of errors

Bought a new 4TB disk and pre-cleared it to replace the old one, which I placed in my desktop PC. No matter what I do, it is still saying this disk is missing and the slot it used says it is the wrong drive.

Whilst doing this, Disk 6 suddenly showed lots of errors for some reason.

Disk 5 is actually the new disk I bought but I can't add it as I can't start the array without the old drive.

 

Maybe the best bet is to do  a new config with the new drive and forget about the old drive 6 (it as a newish drive which seems to have failed)

 

you have single parity which can recover from a single failure.  You have multiple failures, normal recovery of the array is not gonna happen.

You probably need to determine which disks have actual errors (start with smartdata) and which just have corrupt filesystems.  If it's just the filesystem, hopefully your on xfs, it's pretty resilient... fix the filesystem to recover any data and back it up using your normal methods.

 

You're probably going to end up having to make a new config and restore from backups.  Don't use bad hardware for a new config, so make sure it's ok first.

Thanks.

All drives report 'Passed' in the Smart Report. Is there anything else I need to look out for in the Smart Report.

Disk 5 still shows the ID of the old failed drive.

 

Cheers

 

P

Sorry, Disk 6 showa the old ID of the failed drive

2 minutes ago, bramley4600 said:

Thanks.

All drives report 'Passed' in the Smart Report. Is there anything else I need to look out for in the Smart Report.

Disk 5 still shows the ID of the old failed drive.

 

Cheers

 

P

 

I like to run badblocks (in write mode) on a questionable drive, its takes a while, but gives me peace of mind.... kinda like memtest for block storage    1 pass is fine really.

 

 

i don't understand why disk 5 should suddenly report as 'bad' whilst doing a pre-clear on a new disk 7?

15 hours ago, bramley4600 said:

Disk 5 still shows the ID of the old failed drive.

You need to do new config with the remaining good drives, you can't recover from multiple failed drives, also there was no disk7 in the original diags.

 

 

Thanks again.

So, as it was saying the bad disk was missing, I took it out of my PC and put it back in my Unraid server. Hey presto, I was able start the array in maintenance mode and it re-built the disk, which I could not do before.  Had a quick look and I have most of my data apart from a few bits missing. I have a large folder with all my classical music, when I look at the User share, the folder is empty, if I look at the disk share, it's all there.

Alsi, in your experience, I have a new 4tb drive, should I create a second parity drive or use it as a data drive?

Cheers