Few questions in regards to ZFS, ZVOLs, VMs and a bit about L2ARC

OpenZFS
1

So, I am very much very happy right now with ZFS, just.. First about my setup. I have 1 big NVMe, 1 HDD, and one cheap 128GB SSD.

I have one pool out of the NVMe SSD, and one pool out of HDD. And then the 128GB SSD is used as L2ARC for the HDD (Honestly, it works really lovely)

And then there is… the zvols I have on each pool. And then, passed to the Windows VM with GPU passthrough, just to play some games here and there, as WINE is not perfect..

Anyhow, questions.

  1. I assume, I can just set secondarycache=all on zvols just like datasets, and it would cache the data all the same?
  2. Should I have had tweaked volblocksize, or just outright have used qcow2 files for storage?

now, I do realize, it’s a bit of silly setup, but hey, it works.. and I am happy with it. And I greatly appreciate the answers to said questions :slight_smile: