|
| 1 | + { config, options, lib, diskoLib, ... }: |
| 2 | +let |
| 3 | + deviceSubmodule = lib.types.submodule { |
| 4 | + options = { |
| 5 | + type = lib.mkOption { |
| 6 | + type = lib.types.enum [ "disk" ]; |
| 7 | + default = "disk"; |
| 8 | + description = "Device type (must be disk for bcachefs)"; |
| 9 | + }; |
| 10 | + device = lib.mkOption { |
| 11 | + type = lib.types.str; |
| 12 | + description = "Device path"; |
| 13 | + }; |
| 14 | + label = lib.mkOption { |
| 15 | + type = lib.types.nullOr lib.types.str; |
| 16 | + default = null; |
| 17 | + description = "Device label"; |
| 18 | + }; |
| 19 | + discard = lib.mkOption { |
| 20 | + type = lib.types.bool; |
| 21 | + default = false; |
| 22 | + description = "Enable TRIM/discard"; |
| 23 | + }; |
| 24 | + fsSize = lib.mkOption { |
| 25 | + type = lib.types.nullOr lib.types.str; |
| 26 | + default = null; |
| 27 | + description = "Filesystem size"; |
| 28 | + }; |
| 29 | + bucketSize = lib.mkOption { |
| 30 | + type = lib.types.nullOr lib.types.str; |
| 31 | + default = null; |
| 32 | + description = "Bucket size"; |
| 33 | + }; |
| 34 | + durability = lib.mkOption { |
| 35 | + type = lib.types.nullOr lib.types.int; |
| 36 | + default = null; |
| 37 | + description = "Replication factor"; |
| 38 | + }; |
| 39 | + dataAllowed = lib.mkOption { |
| 40 | + type = lib.types.listOf (lib.types.enum [ "journal" "btree" "user" ]); |
| 41 | + default = []; |
| 42 | + description = "Allowed data types"; |
| 43 | + }; |
| 44 | + }; |
| 45 | + }; |
| 46 | + firstDevice = (lib.head (lib.attrValues config.devices)).device; |
| 47 | +in |
| 48 | +{ |
| 49 | + options = { |
| 50 | + type = lib.mkOption { |
| 51 | + type = lib.types.enum [ "bcachefs" ]; |
| 52 | + default = "bcachefs"; |
| 53 | + internal = true; |
| 54 | + description = "Type"; |
| 55 | + }; |
| 56 | + formatOptions = lib.mkOption { |
| 57 | + type = lib.types.listOf lib.types.str; |
| 58 | + default = []; |
| 59 | + description = "Additional options for bcachefs format"; |
| 60 | + }; |
| 61 | + devices = lib.mkOption { |
| 62 | + type = lib.types.attrsOf deviceSubmodule; |
| 63 | + default = {}; |
| 64 | + description = "Named set of devices for the bcachefs filesystem"; |
| 65 | + example = lib.literalExpression '' |
| 66 | + { |
| 67 | + disk1 = { |
| 68 | + type = "disk"; |
| 69 | + device = "/dev/sda"; |
| 70 | + label = "main"; |
| 71 | + discard = true; |
| 72 | + }; |
| 73 | + disk2 = { |
| 74 | + type = "disk"; |
| 75 | + device = "/dev/sdb"; |
| 76 | + label = "backup"; |
| 77 | + durability = 2; |
| 78 | + }; |
| 79 | + } |
| 80 | + ''; |
| 81 | + }; |
| 82 | + mountPoint = lib.mkOption { |
| 83 | + type = lib.types.str; |
| 84 | + default = ""; |
| 85 | + description = "Allow mount directly rather via content because bcachefs provides one-stop-shop"; |
| 86 | + example = "/mnt/pool"; |
| 87 | + }; |
| 88 | + mountOptions = lib.mkOption { |
| 89 | + type = lib.types.listOf lib.types.str; |
| 90 | + default = [ "defaults" ]; |
| 91 | + description = "Options to pass to mount"; |
| 92 | + }; |
| 93 | + _meta = lib.mkOption { |
| 94 | + internal = true; |
| 95 | + readOnly = true; |
| 96 | + type = diskoLib.jsonType; |
| 97 | + default = {}; |
| 98 | + }; |
| 99 | + _create = diskoLib.mkCreateOption { |
| 100 | + inherit config options; |
| 101 | + default = let |
| 102 | + # Build device-specific arguments for each device |
| 103 | + deviceArgs = lib.concatMap (dev: |
| 104 | + (lib.optional (dev.label != null) "--label=${dev.label}") |
| 105 | + ++ (lib.optional dev.discard "--discard") |
| 106 | + ++ (lib.optional (dev.fsSize != null) "--fs_size=${dev.fsSize}") |
| 107 | + ++ (lib.optional (dev.bucketSize != null) "--bucket=${dev.bucketSize}") |
| 108 | + ++ (lib.optional (dev.durability != null) "--durability=${toString dev.durability}") |
| 109 | + ++ (lib.optional (dev.dataAllowed != []) "--data_allowed=${lib.concatStringsSep "," dev.dataAllowed}") |
| 110 | + ++ [ dev.device ] |
| 111 | + ) (lib.attrValues config.devices); |
| 112 | + allArgs = config.formatOptions ++ deviceArgs; |
| 113 | + in '' |
| 114 | + # Check if any of the devices are already formatted with bcachefs |
| 115 | + needs_format=0 |
| 116 | + for device in ${lib.concatMapStringsSep " " (dev: lib.escapeShellArg dev.device) (lib.attrValues config.devices)}; do |
| 117 | + if ! bcachefs show-super "$device" >/dev/null 2>&1; then |
| 118 | + needs_format=1 |
| 119 | + break |
| 120 | + fi |
| 121 | + done |
| 122 | +
|
| 123 | + if [ "$needs_format" -eq 1 ]; then |
| 124 | + bcachefs format --force ${lib.concatStringsSep " " allArgs} |
| 125 | + udevadm trigger --subsystem-match=block |
| 126 | + udevadm settle |
| 127 | + fi |
| 128 | + ''; |
| 129 | + }; |
| 130 | + _mount = diskoLib.mkMountOption { |
| 131 | + inherit config options; |
| 132 | + default = { |
| 133 | + fs = lib.optionalAttrs (config.mountpoint != null) { |
| 134 | + ${config.mountpoint} = '' |
| 135 | + if ! findmnt "${config.mountpoint}" > /dev/null 2>&1; then |
| 136 | + UUID=$(bcachefs show-super ${lib.escapeShellArg firstDevice} | grep Ext | awk '{print $3}') |
| 137 | + mount -t bcachefs UUID="$UUID" "${config.mountpoint}" \ |
| 138 | + ${lib.concatMapStringsSep " " (opt: "-o ${opt}") config.mountOptions} \ |
| 139 | + -o X-mount.mkdir |
| 140 | + fi |
| 141 | + ''; |
| 142 | + }; |
| 143 | + }; |
| 144 | + }; |
| 145 | + _unmount = diskoLib.mkUnmountOption { |
| 146 | + inherit config options; |
| 147 | + default = { |
| 148 | + fs = lib.optionalAttrs (config.mountpoint != null) { |
| 149 | + ${config.mountpoint} = '' |
| 150 | + if findmnt "${config.mountpoint}" > /dev/null 2>&1; then |
| 151 | + umount "${config.mountpoint}" |
| 152 | + fi |
| 153 | + ''; |
| 154 | + }; |
| 155 | + }; |
| 156 | + }; |
| 157 | + _config = lib.mkOption { |
| 158 | + internal = true; |
| 159 | + readOnly = true; |
| 160 | + default = [ |
| 161 | + { boot.supportedFilesystems = [ "bcachefs" ]; } |
| 162 | + ]; |
| 163 | + }; |
| 164 | + _pkgs = lib.mkOption { |
| 165 | + internal = true; |
| 166 | + readOnly = true; |
| 167 | + type = lib.types.functionTo (lib.types.listOf lib.types.package); |
| 168 | + default = pkgs: [ pkgs.bcachefs-tools ]; |
| 169 | + }; |
| 170 | + }; |
| 171 | +} |
0 commit comments