Hello everyone,

 

I'm new here and I hope I'm not in the wrong section. 

I've recently added a cache drive to my unraid server (6.7.2). The drive is a Samsung Pro 256GB SSD.

The problem is that it seems that unraid is not counting it.

I have 5 SSD in my cache pool and the size is the sum of half the size of each drive. 

3 x 120GB SSD 

1 x 250GB SSD 

1 x 256GB SSD

Total: 305GB ... where are those 128GB of the last drive gone?

 

Hope you can help me.

Thanks a lot

Andrea

 

Edited October 3, 20196 yr by kod23

BTRFS is "different" when it comes to pool sizes and calculating disk space. Try plugging your numbers into here and see what you get.

https://carfax.org.uk/btrfs-usage/

Hi,

 

thanks for your reply. Unfortunately as per this website, I should obtain a total amount of 433GB.

Am I missing a command to expand the cache pool?

 

It looks rather as if the 5th drive is not being taken into account.   I am sure there is a BTRFS command that can ask for more information on how the drives are being used.

I've found that using btrfs command line, the disk is not really part of cache pool.

Does anybody know how to help me?

Have you done a balance?

I ended up creating a new cache pool.