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|
{ config, lib, pkgs, ... }:
with lib;
let
cfg = config.services.smartd;
smartdOpts = { name, ... }: {
options = {
device = mkOption {
example = "/dev/sda";
type = types.str;
description = "Location of the device.";
};
options = mkOption {
default = "";
example = "-d sat";
type = types.separatedString " ";
description = "Options that determine how smartd monitors the device.";
};
};
};
smartdMail = pkgs.writeScript "smartdmail.sh" ''
#! ${pkgs.stdenv.shell}
TMPNAM=/tmp/smartd-message.$$.tmp
if test -n "$SMARTD_ADDRESS"; then
echo >"$TMPNAM" "From: smartd <root>"
echo >>"$TMPNAM" 'To: undisclosed-recipients:;'
echo >>"$TMPNAM" "Subject: $SMARTD_SUBJECT"
echo >>"$TMPNAM"
echo >>"$TMPNAM" "Failure on $SMARTD_DEVICESTRING: $SMARTD_FAILTYPE"
echo >>"$TMPNAM"
cat >>"$TMPNAM"
${pkgs.smartmontools}/sbin/smartctl >>"$TMPNAM" -a -d "$SMARTD_DEVICETYPE" "$SMARTD_DEVICE"
/var/setuid-wrappers/sendmail <"$TMPNAM" -f "$SENDER" -i "$SMARTD_ADDRESS"
fi
'';
smartdConf = pkgs.writeText "smartd.conf" (concatMapStrings (device:
''
${device.device} -a -m root -M exec ${smartdMail} ${device.options} ${cfg.deviceOpts}
''
) cfg.devices);
smartdFlags = if (cfg.devices == []) then "" else "--configfile=${smartdConf}";
in
{
###### interface
options = {
services.smartd = {
enable = mkOption {
default = false;
type = types.bool;
example = true;
description = ''
Run smartd from the smartmontools package. Note that e-mail
notifications will not be enabled unless you configure the list of
devices with <varname>services.smartd.devices</varname> as well.
'';
};
deviceOpts = mkOption {
default = "";
type = types.string;
example = "-o on -s (S/../.././02|L/../../7/04)";
description = ''
Additional options for each device that is monitored. The example
turns on SMART Automatic Offline Testing on startup, and schedules short
self-tests daily, and long self-tests weekly.
'';
};
devices = mkOption {
default = [];
example = [ { device = "/dev/sda"; } { device = "/dev/sdb"; options = "-d sat"; } ];
type = types.listOf types.optionSet;
options = [ smartdOpts ];
description = ''
List of devices to monitor. By default -- if this list is empty --,
smartd will monitor all devices connected to the machine at the time
it's being run. Configuring this option has the added benefit of
enabling e-mail notifications to "root" every time smartd detects an
error.
'';
};
};
};
###### implementation
config = mkIf cfg.enable {
systemd.services.smartd = {
description = "S.M.A.R.T. Daemon";
wantedBy = [ "multi-user.target" ];
serviceConfig.ExecStart = "${pkgs.smartmontools}/sbin/smartd --no-fork ${smartdFlags}";
};
};
}
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