59 lines
1.3 KiB
Nix
59 lines
1.3 KiB
Nix
{ config, pkgs, ... }:
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###### implementation
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let
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tempConf = "/var/run/mdadm.conf";
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logFile = "/var/log/mdadmEvents.log";
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modprobe = config.system.sbin.modprobe;
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inherit (pkgs) mdadm;
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mdadmEventHandler = pkgs.writeScript "mdadmEventHandler.sh" ''
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#!/bin/sh
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echo "$@" >> ${logFile}
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case $1 in
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(NewArray)
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initctl emit -n new-devices
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;;
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(*) ;;
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esac
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'';
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in
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{
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jobs.swraid =
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{ startOn = [ "startup" "new-devices" ];
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script =
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''
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# Load the necessary RAID personalities.
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# !!! hm, doesn't the kernel load these automatically?
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for mod in raid0 raid1 raid5; do
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${modprobe}/sbin/modprobe $mod || true
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done
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# Scan /proc/partitions for RAID devices.
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${mdadm}/sbin/mdadm --examine --brief --scan -c partitions > ${tempConf}
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if ! test -s ${tempConf}; then exit 0; fi
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# Activate each device found.
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${mdadm}/sbin/mdadm --assemble -c ${tempConf} --scan
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'';
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task = true;
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};
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jobs.swraidEvents = {
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name = "swraid-events";
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description = "Watch mdadm events.";
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startOn = [ "startup" ];
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exec = "${mdadm}/sbin/mdadm --monitor --scan --program ${mdadmEventHandler}";
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};
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}
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