Cache SSD broken, how to replace?

[EmilioValentino]

Hi all,

So one of my M.2 NVME cache drives failed, and my server is now running on only one cache SSD.

 

I ordered 2x NVME 1TB drives that are arriving tomorrow, but I want to figure out the steps I have to take to keep everything running. 

 

I want to replace both cache drives with the new ordered ones. This is my game plan for now:

 

- Replace the failed and broken cache drive

- Copy the contents from the working drive to the new bought drive

- Replace the old cache SSD that is working and include it in the cache pool

 

Can anyone help me with a guide on how to acomplish this?

 

[Tom3]

The storage management section of the manual details how to handle cache replacement.

Recommended reading.

 

https://wiki.unraid.net/Manual/Storage_Management#Why_use_a_Pool.3F

 

-- Tom

[JorgeB]

Note that direct pool device replacement is broken in v6.9.x+, you can still do manually or using other methods.

[EmilioValentino]

1 hour ago, JorgeB said:

Note that direct pool device replacement is broken in v6.9.x+, you can still do manually or using other methods.

And what would this other method be? 

[JorgeB]

This, or manually using the CLI, best solution also depends of the current pool status.

[EmilioValentino]

On 12/23/2021 at 10:53 AM, JorgeB said:

This, or manually using the CLI, best solution also depends of the current pool status.

So my second cache drive failed too, luckily I made a backup 10 minutes before using CA Backup / Restore Appdata.

 

Now I want to restore, but when I do so, after the restore process I don't see my Docker containers....

 

Am I missing something?

[JorgeB]

1 minute ago, EmilioValentino said:

Now I want to restore, but when I do so, after the restore process I don't see my Docker containers....

Did you recreate the docker image?

[Squid]

[EmilioValentino]

I don't understand this part, I delete the Docker image and then what? 

I see that my Docker image is in /mnt/user/system/docker in file explorer, and in the Docker settings this is still the location:

 

 

[EmilioValentino]

8 minutes ago, JorgeB said:

Did you recreate the docker image?

I just use the delete tick in Docker settings and restart the docker service right? The paths are all correct as far as I can tell..

[itimpi]

Have you then gone into Apps->Previous Apps and ticked off the containers you want re-installed into the new docker.img file?

 

[EmilioValentino]

4 minutes ago, itimpi said:

Have you then gone into Apps->Previous Apps and ticked off the containers you want re-installed?

I did not know this step was required. 

So just to be sure, I have to reinstall them manually?

[itimpi]

26 minutes ago, EmilioValentino said:

I did not know this step was required. 

So just to be sure, I have to reinstall them manually?

That was the last step in the instructions that @Squid provided

 

When you do that step then Unraid will install the binaries for all the apps you tick off with their previous settings intact. 

[EmilioValentino]

Thanks a lot sir, worked like a charm! Everything working fine now!

 

i got some udma errors on another ssd, but i read that this might be a bad sata cable.