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stage-1: autodetect resume swap partitions

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This commit is contained in:
Nikolay Amiantov 2014-09-24 05:04:26 +04:00
parent 74f6be0e5f
commit 18bd9917ed
2 changed files with 28 additions and 9 deletions
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21
nixos/modules/system/boot/stage-1-init.sh
View file

@ -168,9 +168,24 @@ if test -e /sys/power/tuxonice/resume; then
fi
fi
if test -n "@resumeDevice@" -a -e /sys/power/resume -a -e /sys/power/disk; then
echo "@resumeDevice@" > /sys/power/resume 2> /dev/null || echo "failed to resume..."
echo shutdown > /sys/power/disk
if test -e /sys/power/resume -a -e /sys/power/disk; then
if test -n "@resumeDevice@"; then
resumeDev="@resumeDevice@"
else
for sd in @resumeDevices@; do
# Try to detect resume device. According to Ubuntu bug:
# https://bugs.launchpad.net/ubuntu/+source/pm-utils/+bug/923326/comments/1
# When there are multiple swap devices, we can't know where will hibernate
# image reside. We can check all of them for swsuspend blkid.
if [ "$(blkid -o value -s TYPE "$sd")" = "swsuspend" ]; then
resumeDev="$sd"
break
fi
done
fi
if test -n "$resumeDev"; then
echo "$resumeDev" > /sys/power/resume 2> /dev/null || echo "failed to resume..."
fi
fi

16
nixos/modules/system/boot/stage-1.nix
View file

@ -181,6 +181,9 @@ let
inherit (config.boot.initrd) checkJournalingFS
preLVMCommands postDeviceCommands postMountCommands kernelModules;
resumeDevices = map (sd: if sd ? device then sd.device else "/dev/disk/by-label/${sd.label}")
(filter (sd: sd ? label || hasPrefix "/dev/" sd.device) config.swapDevices);
fsInfo =
let f = fs: [ fs.mountPoint (if fs.device != null then fs.device else "/dev/disk/by-label/${fs.label}") fs.fsType fs.options ];
in pkgs.writeText "initrd-fsinfo" (concatStringsSep "\n" (concatMap f fileSystems));
@ -220,13 +223,14 @@ in
options = {
boot.resumeDevice = mkOption {
type = types.nullOr types.str;
default = null;
example = "8:2";
type = types.str;
default = "";
example = "/dev/sda3";
description = ''
Device for manual resume attempt during boot, specified using
the device's major and minor number as
<literal><replaceable>major</replaceable>:<replaceable>minor</replaceable></literal>.
Device for manual resume attempt during boot. This should be used primarily
if you want to resume from file. Specify here the device where the file
resides. You should also use <varname>boot.kernelParams</varname> to specify
<literal><replaceable>resume_offset</replaceable></literal>.
'';
};