sw-raid: make mdmon start from initrd

Also add required systemd services for starting/stopping mdmon.

Closes #13447.
abbradar: fixed `mdadmShutdown` service name according to de facto conventions.

kklas aac666e3 b20439ef

Changed files
+42
nixos
modules
system
tasks
+1
nixos/modules/system/boot/stage-1.nix
···
# Add RAID mdadm tool.
copy_bin_and_libs ${pkgs.mdadm}/sbin/mdadm
+
copy_bin_and_libs ${pkgs.mdadm}/sbin/mdmon
# Copy udev.
copy_bin_and_libs ${udev}/lib/systemd/systemd-udevd
+41
nixos/modules/tasks/swraid.nix
···
cp -v ${pkgs.mdadm}/lib/udev/rules.d/*.rules $out/
'';
+
systemd.services.mdadmShutdown = {
+
wantedBy = [ "final.target"];
+
after = [ "umount.target" ];
+
+
unitConfig = {
+
DefaultDependencies = false;
+
};
+
+
serviceConfig = {
+
Type = "oneshot";
+
ExecStart = ''${pkgs.mdadm}/bin/mdadm --wait-clean --scan'';
+
};
+
};
+
+
systemd.services."mdmon@" = {
+
description = "MD Metadata Monitor on /dev/%I";
+
+
unitConfig.DefaultDependencies = false;
+
+
serviceConfig = {
+
Type = "forking";
+
Environment = "IMSM_NO_PLATFORM=1";
+
ExecStart = ''${pkgs.mdadm}/bin/mdmon --offroot --takeover %I'';
+
KillMode = "none";
+
};
+
};
+
+
systemd.services."mdadm-grow-continue@" = {
+
description = "Manage MD Reshape on /dev/%I";
+
+
unitConfig.DefaultDependencies = false;
+
+
serviceConfig = {
+
ExecStart = ''${pkgs.mdadm}/bin/mdadm --grow --continue /dev/%I'';
+
StandardInput = "null";
+
StandardOutput = "null";
+
StandardError = "null";
+
KillMode = "none";
+
};
+
};
+
}