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add zfs support/test/example

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This commit is contained in:
lassulus 2022-08-25 15:08:26 +02:00
parent dd99e29edc
commit 83fb8f661e
3 changed files with 143 additions and 3 deletions
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65
default.nix
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@ -38,6 +38,13 @@ let
};
};
config.zfs_filesystem = q: x: {
fileSystems.${x.mountpoint} = {
device = q.device;
fsType = "zfs";
};
};
config.devices = q: x:
foldl' recursiveUpdate {} (mapAttrsToList (name: config-f { device = "/dev/${name}"; }) x.content);
@ -67,8 +74,8 @@ let
'';
create.devices = q: x: let
raid-devices = lib.filterAttrs (_: dev: dev.type == "mdadm") x.content;
other-devices = lib.filterAttrs (_: dev: dev.type != "mdadm") x.content;
raid-devices = lib.filterAttrs (_: dev: dev.type == "mdadm" || dev.type == "zpool") x.content;
other-devices = lib.filterAttrs (_: dev: dev.type != "mdadm" && dev.type != "zpool") x.content;
in ''
${concatStrings (mapAttrsToList (name: create-f { device = "/dev/${name}"; }) other-devices)}
${concatStrings (mapAttrsToList (name: create-f { device = "/dev/${name}"; name = name; }) raid-devices)}
@ -125,6 +132,32 @@ let
${concatStrings (imap (index: create-f (q // { inherit index; })) x.partitions)}
'';
create.zfs = q: x: ''
ZFSDEVICES_${x.pool}="''${ZFSDEVICES_${x.pool}:-}${q.device} "
'';
create.zfs_filesystem = q: x: ''
zfs create ${q.pool}/${x.name} \
${lib.optionalString (isAttrs x.options or null) (concatStringsSep " " (mapAttrsToList (n: v: "-o ${n}=${v}") x.options))}
'';
create.zfs_volume = q: x: ''
zfs create ${q.pool}/${x.name} \
-V ${x.size} \
${lib.optionalString (isAttrs x.options or null) (concatStringsSep " " (mapAttrsToList (n: v: "-o ${n}=${v}") x.options))}
udevadm trigger --subsystem-match=block; udevadm settle
${create-f { device = "/dev/zvol/${q.pool}/${x.name}"; } x.content}
'';
create.zpool = q: x: ''
zpool create ${q.name} \
${lib.optionalString (!isNull x.mode || x.mode != "stripe") x.mode} \
${lib.optionalString (isAttrs x.options or null) (concatStringsSep " " (mapAttrsToList (n: v: "-o ${n}=${v}") x.options))} \
${lib.optionalString (isAttrs x.rootFsOptions or null) (concatStringsSep " " (mapAttrsToList (n: v: "-O ${n}=${v}") x.rootFsOptions))} \
''${ZFSDEVICES_${q.name}}
${concatMapStrings (create-f (q // { pool = q.name; })) x.datasets}
'';
mount-f = q: x: mount.${x.type} q x;
@ -144,6 +177,8 @@ let
${optionalString (hasAttr "table" z) (concatStringsSep "\n" (attrValues z.table))}
${optionalString (hasAttr "luks" z) (concatStringsSep "\n" (attrValues z.luks))}
${optionalString (hasAttr "lvm" z) (concatStringsSep "\n" (attrValues z.lvm))}
${optionalString (hasAttr "zpool" z) (concatStringsSep "\n" (attrValues z.zpool))}
${optionalString (hasAttr "zfs" z) (concatStringsSep "\n" (attrValues z.zfs))}
${optionalString (hasAttr "fs" z) (concatStringsSep "\n" (attrValues z.fs))}
'';
@ -170,7 +205,6 @@ let
mount.mdadm = q: x:
mount-f { device = "/dev/md/${q.name}"; } x.content;
# TODO maybe we need to do something here?
mount.mdraid = mount.noop;
mount.partition = q: x:
@ -181,6 +215,31 @@ let
(foldl' recursiveUpdate {} (imap (index: mount-f (q // { inherit index; device = helper.device-id q.device; })) x.partitions))
{table.${q.device} = helper.find-device q.device;}
);
mount.zfs = mount.noop;
mount.zpool = q: x: (
recursiveUpdate
(foldl' recursiveUpdate {} (map (mount-f (q // { pool = q.name; })) x.datasets))
{zpool.${q.device} = ''
zpool list '${q.name}' >/dev/null 2>/dev/null || zpool import '${q.name}'
'';}
);
mount.zfs_filesystem = q: x: {
zfs.${x.mountpoint} = ''
if ! findmnt '${q.pool}/${x.name}' /mnt${x.mountpoint} > /dev/null 2>&1; then
mount \
${lib.optionalString ((x.options.mountpoint or "") != "legacy") "-o zfsutil"} \
-t zfs ${q.pool}/${x.name} /mnt${x.mountpoint} \
-o X-mount.mkdir
fi
'';
};
mount.zfs_volume = q: x:
mount-f { device = "/dev/zvol/${q.pool}/${x.name}"; } x.content;
in {
config = config-f {};
create = cfg: ''