diff options
Diffstat (limited to 'nixos/modules/tasks/filesystems/bcachefs.nix')
| -rw-r--r-- | nixos/modules/tasks/filesystems/bcachefs.nix | 92 |
1 files changed, 64 insertions, 28 deletions
diff --git a/nixos/modules/tasks/filesystems/bcachefs.nix b/nixos/modules/tasks/filesystems/bcachefs.nix index 4eadec239e67..d144ce62dc27 100644 --- a/nixos/modules/tasks/filesystems/bcachefs.nix +++ b/nixos/modules/tasks/filesystems/bcachefs.nix @@ -1,28 +1,42 @@ { config, lib, pkgs, utils, ... }: -with lib; - let - bootFs = filterAttrs (n: fs: (fs.fsType == "bcachefs") && (utils.fsNeededForBoot fs)) config.fileSystems; - - mountCommand = pkgs.runCommand "mount.bcachefs" {} '' - mkdir -p $out/bin - cat > $out/bin/mount.bcachefs <<EOF - #!/bin/sh - exec "/bin/bcachefs" mount "\$@" - EOF - chmod +x $out/bin/mount.bcachefs - ''; + bootFs = lib.filterAttrs (n: fs: (fs.fsType == "bcachefs") && (utils.fsNeededForBoot fs)) config.fileSystems; commonFunctions = '' prompt() { local name="$1" printf "enter passphrase for $name: " } + tryUnlock() { local name="$1" local path="$2" + local success=false + local target + local uuid=$(echo -n $path | sed -e 's,UUID=\(.*\),\1,g') + + printf "waiting for device to appear $path" + for try in $(seq 10); do + if [ -e $path ]; then + success=true + break + else + target=$(blkid --uuid $uuid) + if [ $? == 0 ]; then + success=true + break + fi + fi + echo -n "." + sleep 1 + done + printf "\n" + if [ $success == true ]; then + path=$target + fi + if bcachefs unlock -c $path > /dev/null 2> /dev/null; then # test for encryption prompt $name until bcachefs unlock $path 2> /dev/null; do # repeat until successfully unlocked @@ -30,6 +44,8 @@ let prompt $name done printf "unlocking successful.\n" + else + echo "Cannot unlock device $uuid with path $path" >&2 fi } ''; @@ -38,7 +54,7 @@ let # remove this adaptation when bcachefs implements mounting by filesystem uuid # also, implement automatic waiting for the constituent devices when that happens # bcachefs does not support mounting devices with colons in the path, ergo we don't (see #49671) - firstDevice = fs: head (splitString ":" fs.device); + firstDevice = fs: lib.head (lib.splitString ":" fs.device); openCommand = name: fs: '' tryUnlock ${name} ${firstDevice fs} @@ -72,41 +88,61 @@ let }; }; + assertions = [ + { + assertion = let + kernel = config.boot.kernelPackages.kernel; + in ( + kernel.kernelAtLeast "6.7" || ( + lib.elem (kernel.structuredExtraConfig.BCACHEFS_FS or null) [ + lib.kernel.module + lib.kernel.yes + lib.kernel.option.yes + ] + ) + ); + + message = "Linux 6.7-rc1 at minimum or a custom linux kernel with bcachefs support is required"; + } + ]; in { - config = mkIf (elem "bcachefs" config.boot.supportedFilesystems) (mkMerge [ + config = lib.mkIf (lib.elem "bcachefs" config.boot.supportedFilesystems) (lib.mkMerge [ { - # We do not want to include bachefs in the fsPackages for systemd-initrd - # because we provide the unwrapped version of mount.bcachefs - # through the extraBin option, which will make it available for use. - system.fsPackages = lib.optional (!config.boot.initrd.systemd.enable) pkgs.bcachefs-tools; - environment.systemPackages = lib.optional (config.boot.initrd.systemd.enable) pkgs.bcachefs-tools; - - # use kernel package with bcachefs support until it's in mainline - boot.kernelPackages = pkgs.linuxPackages_testing_bcachefs; + inherit assertions; + # needed for systemd-remount-fs + system.fsPackages = [ pkgs.bcachefs-tools ]; + + # FIXME: Replace this with `linuxPackages_testing` after NixOS 23.11 is released + # FIXME: Replace this with `linuxPackages_latest` when 6.7 is released, remove this line when the LTS version is at least 6.7 + boot.kernelPackages = lib.mkDefault ( + # FIXME: Remove warning after NixOS 23.11 is released + lib.warn "Please upgrade to Linux 6.7-rc1 or later: 'linuxPackages_testing_bcachefs' is deprecated. Use 'boot.kernelPackages = pkgs.linuxPackages_testing;' to silence this warning" + pkgs.linuxPackages_testing_bcachefs + ); systemd.services = lib.mapAttrs' (mkUnits "") (lib.filterAttrs (n: fs: (fs.fsType == "bcachefs") && (!utils.fsNeededForBoot fs)) config.fileSystems); } - (mkIf ((elem "bcachefs" config.boot.initrd.supportedFilesystems) || (bootFs != {})) { + (lib.mkIf ((lib.elem "bcachefs" config.boot.initrd.supportedFilesystems) || (bootFs != {})) { + inherit assertions; # chacha20 and poly1305 are required only for decryption attempts boot.initrd.availableKernelModules = [ "bcachefs" "sha256" "chacha20" "poly1305" ]; - boot.initrd.systemd.extraBin = { + # do we need this? boot/systemd.nix:566 & boot/systemd/initrd.nix:357 "bcachefs" = "${pkgs.bcachefs-tools}/bin/bcachefs"; - "mount.bcachefs" = "${mountCommand}/bin/mount.bcachefs"; + "mount.bcachefs" = "${pkgs.bcachefs-tools}/bin/mount.bcachefs"; }; - boot.initrd.extraUtilsCommands = lib.mkIf (!config.boot.initrd.systemd.enable) '' copy_bin_and_libs ${pkgs.bcachefs-tools}/bin/bcachefs - copy_bin_and_libs ${mountCommand}/bin/mount.bcachefs + copy_bin_and_libs ${pkgs.bcachefs-tools}/bin/mount.bcachefs ''; boot.initrd.extraUtilsCommandsTest = lib.mkIf (!config.boot.initrd.systemd.enable) '' $out/bin/bcachefs version ''; - boot.initrd.postDeviceCommands = lib.mkIf (!config.boot.initrd.systemd.enable) (commonFunctions + concatStrings (mapAttrsToList openCommand bootFs)); + boot.initrd.postDeviceCommands = lib.mkIf (!config.boot.initrd.systemd.enable) (commonFunctions + lib.concatStrings (lib.mapAttrsToList openCommand bootFs)); boot.initrd.systemd.services = lib.mapAttrs' (mkUnits "/sysroot") bootFs; }) |