Hi all,

 

I'm running a mirrored docker with 2 disks in it. Recently 1 (2nd drive) gave errors so i planned to swap both out for bigger ones.

I replaced the first one (shut down server, took out old one, put in new one, started up and selected the new disk) and after a while i did the second one. I expected the first drive to be filled with the content from the second but that did not happen.

So after also replacing the second one,  i ended up with a docker i had to fill with my backed up data, took some time but everything works.

 

But now i realized i am running the docker just with a single disk.

The second disk shows as New Device when the Array is started and as Wrong when stopped. (see images)

It claims all existing data on this device will be overwritten when the array is started, but simply nothing happens.

The old 120gb disk is also shown like Unraid still expects that drive

 

The 2 "new disks" come from a friends old Unraid server, perhaps some docker content is on the new disk preventing the format?

Some help how to fix this would be great, i am a bit at a loss.

I did set the docker to Raid1 which it may not have been before, there must have been some form of redundancy as taking out disk 1 still allowed me to run dockers.

 

On a side note, i seem to have some errors on the new second drive same as i did with the old one. 

That SSD is connected by USB, could that be the cause? 

 

Thanks in advance for any help or pointers you can give me to correct this!

server22-diagnostics-20250417-0920.zip

Post the output from

btrfs fi show

 

 

Hope this is what you meant. Thanks in advance!

Click the first device from the docker pool, then "remove pool"

Back on main, create a new pool with the same name and 2 slots
assign both pool devices (sda and sdi), leave the filesystem set to auto
start the array to import the pool

 

That shouild do it.

You think all my dockers and files will remain intact or should i back them up first?

And this creates a mirrored set-up automatically that you know?

Whatever data is on that pool, it will remain there.

 

1 hour ago, Exanimo said:

And this creates a mirrored set-up automatically that you know?

The pool already has two devices, cannot see if it's a mirror for now, but most likely it is, post new diags after importing the pool and we can confirm.

Sorry, did not get around to trying this until now, but it worked like you said!

 

When checking the settings it says Raid1 so i guess that is mirrored as desired.

It does just say:

No balance found on '/mnt/docker'

Current usage ratio: 92.2 % --- No Balance required

 

Would Raid1 even need balance? Both drives should be identical right? Or perhaps the second drive does not have the same content yet and the term Balance is sort of misused?

Thansk!

18 minutes ago, Exanimo said:

Would Raid1 even need balance?

It can, it will depend mostly on the use type, if the current usage ratio decreases considerably, it will recommend a balance, this is independent of the profile in use, it's about the amount of unallocated btrfs chunks.