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feat: added shared datasets between guests

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Patrick Großmann 2024-01-18 00:17:00 +01:00
parent cab2f4b040
commit cbd79751a0
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1 changed files with 21 additions and 3 deletions
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24
modules/guests/default.nix
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@ -46,14 +46,25 @@
defineGuest = _guestName: guestCfg: { defineGuest = _guestName: guestCfg: {
# Add the required datasets to the disko configuration of the machine # Add the required datasets to the disko configuration of the machine
disko.devices.zpool = mkMerge (flip map (attrValues guestCfg.zfs) (zfsCfg: { disko.devices.zpool = mkMerge (flip map (attrValues guestCfg.zfs) (zfsCfg: {
${zfsCfg.pool}.datasets.${zfsCfg.dataset} = disko.zfs.filesystem zfsCfg.hostMountpoint; ${zfsCfg.pool}.datasets.${zfsCfg.dataset} =
if !zfsCfg.shared
then disko.zfs.filesystem zfsCfg.hostMountpoint
else disko.zfs.unmountable;
}));
# Add the required fileSystems for shared folders
fileSystems = mkMerge (flip map (attrValues guestCfg.zfs) (zfsCfg: {
${zfsCfg.hostMountpoint} = {
fsType = "zfs";
options = ["zfsutil"];
device = "${zfsCfg.pool}/${zfsCfg.dataset}";
};
})); }));
# Ensure that the zfs dataset exists before it is mounted. # Ensure that the zfs dataset exists before it is mounted.
systemd.services = mkMerge (flip map (attrValues guestCfg.zfs) (zfsCfg: let systemd.services = mkMerge (flip map (attrValues guestCfg.zfs) (zfsCfg: let
fsMountUnit = "${utils.escapeSystemdPath zfsCfg.hostMountpoint}.mount"; fsMountUnit = "${utils.escapeSystemdPath zfsCfg.hostMountpoint}.mount";
in { in {
"zfs-ensure-${utils.escapeSystemdPath zfsCfg.hostMountpoint}" = { "zfs-ensure-${utils.escapeSystemdPath "${zfsCfg.pool}/${zfsCfg.dataset}"}" = {
wantedBy = [fsMountUnit]; wantedBy = [fsMountUnit];
before = [fsMountUnit]; before = [fsMountUnit];
after = [ after = [
@ -237,6 +248,13 @@ in {
example = "/persist"; example = "/persist";
description = "The mountpoint inside the guest."; description = "The mountpoint inside the guest.";
}; };
shared = mkOption {
type = types.bool;
default = false;
example = true;
description = "Whether this mountpoint will be shared between different guests. This will prevent disko from creating a entry to config.filesSystems.";
};
}; };
})); }));
}; };
@ -273,7 +291,7 @@ in {
) )
)); ));
} }
(mergeToplevelConfigs ["disko" "systemd"] (mapAttrsToList defineGuest config.guests)) (mergeToplevelConfigs ["disko" "systemd" "fileSystems"] (mapAttrsToList defineGuest config.guests))
(mergeToplevelConfigs ["containers" "systemd"] (mapAttrsToList defineContainer guestsByBackend.container)) (mergeToplevelConfigs ["containers" "systemd"] (mapAttrsToList defineContainer guestsByBackend.container))
(mergeToplevelConfigs ["microvm" "systemd"] (mapAttrsToList defineMicrovm guestsByBackend.microvm)) (mergeToplevelConfigs ["microvm" "systemd"] (mapAttrsToList defineMicrovm guestsByBackend.microvm))
] ]