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nixpkgs/upstart-jobs/swap.nix
Eelco Dolstra 24e34612e3 * Allow swap devices to be specified by label.
svn path=/nixos/trunk/; revision=7609
2007-01-10 13:07:57 +00:00

45 lines
985 B
Nix

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