In reply to @perchun:matrix.org
Yeah, it deleted all of my data if there wasn't something correct in the setup. Like no /persist/system or wrong permissions on /persist/home (in second scenario, home manager just failed to start completely). Though it is probably the fault of impermanence.

But for now, it works on my machine™. Feel free to send your final setup, I will happily steal it ;)

Hi everyone, I would ask you to please just take a look at my config, answer some questions and maybe give some recommendation.

First, my questions:

• extraArgs = ["-f"]` What does this do?
• if I first specify 25%FREE for root at the lvm-lvs and then specify 100%FREE for games, 25% of the file is for root and 75% is for games, right?

Here my config:

Hi everyone, I would ask you to please just take a look at my config, answer some questions and maybe give some recommendation.

First, my questions:

• extraArgs = ["-f"]` What does this do?
• if I first specify 25%FREE for root at the lvm-lvs and then specify 100%FREE for games, 25% of the file is for root and 75% is for games, right?

Here my config:

{
disko.devices = {
        disk = {
                disk0 = {
                        type = "disk";
                        device = "/dev/nvme1n1";
                        content = {
                                type = "gpt";
                                partitions = {
                                        esp = {
                                                name = "ESP";
                                                size = "500M";
                                                type = "EF00";
                                                content = {
                                                        type = "filesystem";
                                                        format = "vfat";
                                                        mountpoint = "/boot";
                                                        };
                                                };
                                        root = {
                                                name = "root0";
                                                size = "100%";
                                                content = {
                                                        type = "lvm_pv";
                                                        vg = "root_vg";
                                                };
                                        };
                                };
                        };
                };
                disk1 = {
                        type = "disk";
                        device = "/dev/nvme0n1";
                        content = {
                                type = "gpt";
                                partitions = {
                                        root = {
                                                name = "root1";
                                                size = 100%;
                                                content = {
                                                        type = "lvm_pv";
                                                        vg = "root_vg";
                                                };
                                        };
                                };
                        };
                };

                lvm_vg = {
                        root_vg = {
                                type = "lvm_vg";
                                lvs = {
                                        root = {
                                                size = "25%FREE";
                                                content = {
                                                        type = "btrfs";
                                                        extraArgs = ["-f"];
                                                        subvolumes = {
                                                                "/root" = {
                                                                 mountpoint = "/";
                                                                };

                                                                "/persist" = {
                                                                mountOptions = ["subvol=persist" "noatime"];
                                                                mountpoint = "/persist";
                                                                };

                                                                "/nix" = {
                                                                mountOptions = ["subvol=nix" "noatime"];
                                                                mountpoint = "/nix";
                                                                };
                                                        };
                                                };
                                        };

                                        games = {
                                                size = "100%FREE";
                                                content = {
                                                        type = "btrfs";
                                                        extraArgs = ["-f"];
                                                        subvolumes = {
                                                                "/games" = {
                                                                mountOptions = ["noatime"];
                                                                mountpoint = "/games";
                                                                };
                                                        };
                                                };
                                        };
                                };
                        };
                };
        };
}