Bcachefs: Difference between revisions

(2 intermediate revisions by the same user not shown)

Line 131:

"${nixos}/nixos/modules/installer/cd-dvd/installation-cd-minimal-new-kernel-no-zfs.nix"

({ lib, pkgs, ... }: {

# Required as a workaround for bug

# https://github.com/NixOS/nixpkgs/issues/32279

environment.systemPackages = [ pkgs.keyutils ];

boot.supportedFilesystems = [ "bcachefs" ];

})

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The following commands will generate the iso-image which will be available in the directory <code>./result/iso</code>

<syntaxhighlight lang="console"># nix build .#nixosConfigurations.exampleIso.config.system.build.isoImage

# nix build .#nixosConfigurations.exampleIso.config.system.build.isoImage

</syntaxhighlight>

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# mkfs.fat -F 32 -n boot /dev/sda1

~~# nix-shell -p bcachefs-tools~~

# mkfs.bcachefs -L nixos /dev/sda2

</syntaxhighlight>

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# ~~nix-shell -p keyutils --run '~~keyctl link @u @s'

# keyctl link @u @s

# ~~nix-shell~~ -~~p bcachefs~~-~~tools~~

# bcachefs format --label=nixos --encrypted /dev/sda2

~~# bcachefs format~~ --encrypted /dev/sda2

# bcachefs unlock /dev/sda2

</syntaxhighlight>

Mount filesystems

Mount filesystems. Use <code>lsblk -o +uuid,fsType | grep bcachefs</code> to get bcachefs partition uuid.

~~There are two ways~~ to ~~mount a~~ bcachefs ~~filesystem~~. ~~First, by device:~~

# mount /dev/~~sda2~~ /mnt

# mount /dev/disk/by-uuid/<...> /mnt

# mkdir /mnt/boot

# mount /dev/disk/by-label/boot /mnt/boot

</syntaxhighlight>

~~For better reliability as with any other filesystem, one should mount the filesystem by UUID, by replacing any drive specifiers with it.~~

~~When you formatted, there was an external UUID shown, but if you lost it, you can retrieve it using~~

~~<syntaxhighlight lang="console">~~

~~# lsblk -o +uuid,fsType | grep bcachefs~~

~~</syntaxhighlight>~~

~~And using it like <code>UUID=<UUID></code> in place of <code>/dev/sda1:/dev/sdb1</code> or even just <code>/dev/sda</code>.~~

Continue installation as recommended by the [https://nixos.org/manual/nixos/stable/index.html#ch-installation NixOS manual].

@@ Line 131: / Line 131: @@
            "${nixos}/nixos/modules/installer/cd-dvd/installation-cd-minimal-new-kernel-no-zfs.nix"
            ({ lib, pkgs, ... }: {
+            # Required as a workaround for bug
+            # https://github.com/NixOS/nixpkgs/issues/32279
+            environment.systemPackages = [ pkgs.keyutils ];
              boot.supportedFilesystems = [ "bcachefs" ];
            })
@@ Line 142: / Line 145: @@
 The following commands will generate the iso-image which will be available in the directory <code>./result/iso</code>
-<syntaxhighlight lang="console">
+<syntaxhighlight lang="console"># nix build .#nixosConfigurations.exampleIso.config.system.build.isoImage
-# nix build .#nixosConfigurations.exampleIso.config.system.build.isoImage
 </syntaxhighlight>
@@ Line 165: / Line 167: @@
 <syntaxhighlight lang="console">
 # mkfs.fat -F 32 -n boot /dev/sda1
-# nix-shell -p bcachefs-tools
 # mkfs.bcachefs -L nixos /dev/sda2
 </syntaxhighlight>
@@ Line 172: / Line 173: @@
 <syntaxhighlight lang="console">
-# nix-shell -p keyutils --run 'keyctl link @u @s'
+# keyctl link @u @s
-# nix-shell -p bcachefs-tools
+# bcachefs format --label=nixos --encrypted /dev/sda2
-# bcachefs format --encrypted /dev/sda2
 # bcachefs unlock /dev/sda2
 </syntaxhighlight>
-Mount filesystems
+Mount filesystems. Use <code>lsblk -o +uuid,fsType | grep bcachefs</code> to get bcachefs partition uuid.
-There are two ways to mount a bcachefs filesystem. First, by device:
 <syntaxhighlight lang="console">
-# mount /dev/sda2 /mnt
+# mount /dev/disk/by-uuid/<...> /mnt
 # mkdir /mnt/boot
 # mount /dev/disk/by-label/boot /mnt/boot
 </syntaxhighlight>
-For better reliability as with any other filesystem, one should mount the filesystem by UUID, by replacing any drive specifiers with it.
-When you formatted, there was an external UUID shown, but if you lost it, you can retrieve it using
-<syntaxhighlight lang="console">
-# lsblk -o +uuid,fsType | grep bcachefs
-</syntaxhighlight>
-And using it like <code>UUID=<UUID></code> in place of <code>/dev/sda1:/dev/sdb1</code> or even just <code>/dev/sda</code>.
 Continue installation as recommended by the [https://nixos.org/manual/nixos/stable/index.html#ch-installation NixOS manual].