Have some issues with my cache drive, so I read in a forum that sometimes you just need to check another drive.

So before anything I did a backup with Appdata Backup, move anything from the cache to the array, and thought it was enough to restore the options and dockers.

So I replaced the drive to test it and it formatted it, but when I tried to run the appdata backup plugin, it didn't restore anything and gave me this error, no matter which backup file I choose.

After that I thought that using the original cache drive I would get everything back. But it didn't.

I didn't lose any configuration nor data on the drives, just the dockers (the configuration is still there if I try to re install any of it), so my question is that if there is a way to restore my original cache drive? or should I just give up and re install everything?

Thanks for the help.

Attach Diagnostics ZIP to your NEXT post in this thread.

2 minutes ago, badaboomxx said:

my original cache drive

Can you mount it as an Unassigned Device?

This is the zip of the diagnostics.

Thanks for the help.

tower-diagnostics-20260311-1124.zip

3 hours ago, trurl said:

Can you mount it as an Unassigned Device?

I tried on my computer, but it didn't read it.

Let me see if it works as an usb on unraid, because my tower sata adapters are already full.

1 hour ago, badaboomxx said:

tried on my computer, but it didn't read it.

Unlikely that your PC can read an Unraid filesystem.

1 hour ago, trurl said:

Unlikely that your PC can read an Unraid filesystem.

Yes, I was just going to try to use a program to see if the drive was working and/or if it had an issue.

When I get out of work I will try to mount the original drive on my nas to see if it can be seen.

22 hours ago, trurl said:

Can you mount it as an Unassigned Device?

I was able to mount the drive with an old USB adapter. So, what is the next step?

I think the share on my computer show more folders in it.

Not entirely clear. Your docker templates (on flash) are OK? But your appdata (maybe on old cache) is missing?

It is quite strange, all data is fine, but all my 4 installed dockers disappeared, when I tried to restore them, all the data and configuration is lost. And I didn't have the apps loaded in the cache.

The cache is still there, and the drive is not letting me mount it unless I want to format it. So I put a new bigger drive, and mounted it with a usb enclosure.

I can see the files that are still in the cache drive. So I am trying to copy them to the same location where they disappeared to see if I can re install them and restore the information.

If you had things setup in the standard (and best) way, the system and appdata shares would be on cache or other pool and not on the array.

The system share contains the docker.img, which is where the code for each container lives. That is easily recreated by reinstalling since the code is just downloaded again.

The appdata has the "working storage" of each container, the things each application needs to keep after it is installed, such as settings you make within the application itself.

Your flash drive has the docker templates, which are the settings you make in the Unraid webUI when you install a container from the Apps page.

As long as you have the templates on flash, and the appdata, it is very simple to get your containers working again just as they were using Previous Apps on the Apps page.

https://docs.unraid.net/unraid-os/troubleshooting/common-issues/docker-troubleshooting/

I think I understand the issue more now.

When I changed the cache drive, the appdata was contained in the failing one, the move command didn't move the appdata outside the failing cache drive, since I scheduled for almost 2 weeks ago to move everything every night from the cache, that is why I changed the option to run the appdata from cache -> array temporally to save as much data as possible from the failing drive.

It appears that since the new cache drive didn't have any of the files contained in the failing drive, all that info is still in the failing drive since the move setting didn't move everything out of the cache.

But now that I see that I can copy the appdata folder alongside all the other data contained in the failing cache drive, I think I can restore the docker options with those 2 and now retry the link you send me. Thanks, I will try it, because it appears to take some time to copy the contents of the drive, and let you know if it worked.

Thanks for the help trurl

Being able to copy the appdata folder from the failed drive, and the link made fix the issues with the dockers and saved all the info in them.

I think I just lost a little bit of data on the files that didn't move after changing the location from the cache, but that is nothing that I cannot find again.

Thank you for your time and help.