I have a simple node with 2 VMs one of them is pfsense and the other is Ubuntu. When I do a snapshot backup to a nas on the Ubuntu VM everything works okay. When I do it with the pfsense VM it stops the VM with an improper shutdown and fails to start a backup. I tried both fast (LZO) and good (GZIP) as well as trying it with the VM off it just never starts the backup. I'm running 4.1-1 fully up to date.