When I was replacing a drive in my cache pool during the replacement process bombed out with a error something along the lines of "nvme0n1 device busy" during the process. Due to this, the drive is missing from the BTRFS pool, but Unraid doesn't seem to have noticed that, can I can't find a way to re-trigger the drive replacement process. I was thinking about just moving the data back onto the old drives in a separate new pool, then deleting the current cache pool and then re-creating the cache pool and move the data back onto it, but I thought that I should probably ask for advice first. I'm really not sure about what to do next, any advice would be appreciated. Diagnostics and relevant screenshots attached

 

Status in Unraid UI

 

BTRFS Pool drive status:

 

tower-diagnostics-20250304-1738.zip

Edited March 4, 20251 yr by Meowcat285

Firs reimport the pool with the correct device alone:

 

on main click on the first device for that pool and then "remove pool"
back on main, create a new pool with the same name and 1 slot
assign the pool device (nvme1n1), leave the filesystem set to auto
start the array to import the pool

 

Now post new diags, you cannot add the other device yet, since there are dual data profiles.

7 hours ago, JorgeB said:

Firs reimport the pool with the correct device alone:

 

on main click on the first device for that pool and then "remove pool"
back on main, create a new pool with the same name and 1 slot
assign the pool device (nvme1n1), leave the filesystem set to auto
start the array to import the pool

 

Now post new diags, you cannot add the other device yet, since there are dual data profiles.

I've still have the two old drives, would it make sense to just move all the data onto a new pool, then recreate the existing cache pool?

If you still have the old pool intact, you can do that.