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nixos/scion: make storing path database optional

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Storing the SCION path sqlite databases persistently on disk is a valid
setup that improves performance, but may have outstanding bugs that need
to be investigated, so this makes persisent storage optional, off by
default.
This commit is contained in:
matthewcroughan
2024-07-02 14:57:38 +01:00
committed by Valentin Gagarin
parent 7e78326ca9
commit c53e5201f4
5 changed files with 31 additions and 9 deletions
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10
nixos/modules/services/networking/scion/scion-control.nix
View File

@@ -3,8 +3,10 @@
with lib;
let
globalCfg = config.services.scion;
cfg = config.services.scion.scion-control;
toml = pkgs.formats.toml { };
connectionDir = if globalCfg.stateless then "/run" else "/var/lib";
defaultConfig = {
general = {
id = "cs";
@@ -12,13 +14,13 @@ let
reconnect_to_dispatcher = true;
};
beacon_db = {
connection = "/run/scion-control/control.beacon.db";
connection = "${connectionDir}/scion-control/control.beacon.db";
};
path_db = {
connection = "/run/scion-control/control.path.db";
connection = "${connectionDir}/scion-control/control.path.db";
};
trust_db = {
connection = "/run/scion-control/control.trust.db";
connection = "${connectionDir}/scion-control/control.trust.db";
};
log.console = {
level = "info";
@@ -62,7 +64,7 @@ in
DynamicUser = true;
Restart = "on-failure";
BindPaths = [ "/dev/shm:/run/shm" ];
RuntimeDirectory = "scion-control";
${if globalCfg.stateless then "RuntimeDirectory" else "StateDirectory"} = "scion-control";
};
};
};

8
nixos/modules/services/networking/scion/scion-daemon.nix
View File

@@ -3,8 +3,10 @@
with lib;
let
globalCfg = config.services.scion;
cfg = config.services.scion.scion-daemon;
toml = pkgs.formats.toml { };
connectionDir = if globalCfg.stateless then "/run" else "/var/lib";
defaultConfig = {
general = {
id = "sd";
@@ -12,10 +14,10 @@ let
reconnect_to_dispatcher = true;
};
path_db = {
connection = "/run/scion-daemon/sd.path.db";
connection = "${connectionDir}/scion-daemon/sd.path.db";
};
trust_db = {
connection = "/run/scion-daemon/sd.trust.db";
connection = "${connectionDir}/scion-daemon/sd.trust.db";
};
log.console = {
level = "info";
@@ -57,7 +59,7 @@ in
ExecStart = "${pkgs.scion}/bin/scion-daemon --config ${configFile}";
Restart = "on-failure";
DynamicUser = true;
RuntimeDirectory = "scion-daemon";
${if globalCfg.stateless then "RuntimeDirectory" else "StateDirectory"} = "scion-daemon";
};
};
};

3
nixos/modules/services/networking/scion/scion-dispatcher.nix
View File

@@ -3,6 +3,7 @@
with lib;
let
globalCfg = config.services.scion;
cfg = config.services.scion.scion-dispatcher;
toml = pkgs.formats.toml { };
defaultConfig = {
@@ -66,7 +67,7 @@ in
ExecStartPre = "${pkgs.coreutils}/bin/rm -rf /run/shm/dispatcher";
ExecStart = "${pkgs.scion}/bin/scion-dispatcher --config ${configFile}";
Restart = "on-failure";
RuntimeDirectory = "scion-dispatcher";
${if globalCfg.stateless then "RuntimeDirectory" else "StateDirectory"} = "scion-dispatcher";
};
};
};

3
nixos/modules/services/networking/scion/scion-router.nix
View File

@@ -3,6 +3,7 @@
with lib;
let
globalCfg = config.services.scion;
cfg = config.services.scion.scion-router;
toml = pkgs.formats.toml { };
defaultConfig = {
@@ -42,7 +43,7 @@ in
ExecStart = "${pkgs.scion}/bin/scion-router --config ${configFile}";
Restart = "on-failure";
DynamicUser = true;
RuntimeDirectory = "scion-router";
${if globalCfg.stateless then "RuntimeDirectory" else "StateDirectory"} = "scion-router";
};
};
};

16
nixos/modules/services/networking/scion/scion.nix
View File

@@ -8,6 +8,22 @@ in
{
options.services.scion = {
enable = mkEnableOption "all of the scion components and services";
stateless = mkOption {
type = types.bool;
default = true;
description = ''
Setting this value to false (stateful) can lead to improved caching and
performance.
This option decides whether to persist the SCION path sqlite databases
on disk or not. Persisting this data can lead to database corruption in
extreme cases such as power outage, meaning SCION fails to work on the
next boot. This is being investigated.
If true, /run/scion-* is used for data
If false, use /var/lib/scion-* is used for data
'';
};
bypassBootstrapWarning = mkOption {
type = types.bool;
default = false;