Btrfs is a great filesystem for proxmox in raid 1. Stop telling people not to use it
Btrfs gets a bad rap sometimes but I have been using it for years and it works very well. It is able to take failing hardware and power outages and still has good performance.
Its supposed to be called betterFS but Jim Salter keeps calling it butter FS. Doesn't really inspire confidence. At least it's gonna need.. a better name