54 lines
1.3 KiB
Nix
54 lines
1.3 KiB
Nix
{pkgs, config, ...}:
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###### implementation
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let
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inherit (pkgs) utillinux lib;
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swapDevices = config.swapDevices;
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devicesByPath =
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map (x: x.device) (lib.filter (x: x ? device) swapDevices);
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devicesByLabel =
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map (x: x.label) (lib.filter (x: x ? label) swapDevices);
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in
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{
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services = {
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extraJobs = [{
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name = "swap";
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job = "
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start on startup
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start on new-devices
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script
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for device in ${toString devicesByPath}; do
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${utillinux}/sbin/swapon \"$device\" || true
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done
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for label in ${toString devicesByLabel}; do
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${utillinux}/sbin/swapon -L \"$label\" || true
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done
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# Remove swap devices not listed in swapDevices.
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# !!! disabled because it doesn't work with labels
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#for used in $(cat /proc/swaps | grep '^/' | sed 's/ .*//'); do
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# found=
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# for device in $ {toString swapDevices}; do
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# if test \"$used\" = \"$device\"; then found=1; fi
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# done
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# if test -z \"$found\"; then
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# ${utillinux}/sbin/swapoff \"$used\" || true
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# fi
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#done
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end script
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";
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}];
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};
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}
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