File System Question (Probably a stupid one)

mwg47x

New Member
Oct 21, 2025
10
3
3
30 miles north of Denver, CO.
I was just building an openSUSE Tumbleweed VM, and pretty much took the defaults for that install.
That means the filesystem for the VM disk is BTRFS.
As I was configuring stuff it suddenly dawned on me that the storage for said BTRFS disk is a NFS share on TrueNAS.
That means it is on a ZFS pool.

I am assuming that having a CoW disk on top of a CoW pool is probably not a good idea, right?
I am thinking I should just use ext4 raw disks for my vm's, and if needed, I can snapshot everything from TrueNAS.
 
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