Replace failing cache pool drive

[tj80]

Hi, 

 

I have a cache pool consisting of two SSDs and I think one of them is on the way out. The server is starting to freeze up and on reboot one of the SSDs is not always detected. This is a big problem as none of my VMs or dockers are working!

 

Two questions:

 

- Is there a way to temporarily start the server using the one good SSD until I obtain a new drive? If an array drive fails we can still start it but I cannot see a way to do that with the cache pool? 

- Is replacing the failed drive the same as if it were an array drive - ie. Just selecting it as the appropriate slot and letting it rebuild from the good drive? 

 

Many thanks, 

Tim

[JorgeB]

1 hour ago, tj80 said:

Is there a way to temporarily start the server using the one good SSD until I obtain a new drive?

If it's a default raid1 pool you can just unassign the bad SSD and start the array, when you have a new one just add it to the pool.

[tj80]

Thanks. And is replacing a failed drive just a case of reallocating the slot to the new drive? 

[JorgeB]

Assuming it's a raid1 pool yes.

[tj80]

I believe it is but confess I don't really understand the balance or scrub options? This is what it shows when both cache drives are working:

[JorgeB]

It is raid1.