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scsi-link-pm: Don't fail if there are no matching SCSI hosts

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This commit is contained in:
Eelco Dolstra 2012-10-04 23:25:11 -04:00
parent 8f4d8cf620
commit 5d9b3ed12b
1 changed files with 6 additions and 5 deletions
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11
modules/tasks/scsi-link-power-management.nix
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@ -6,7 +6,7 @@ with pkgs.lib;
###### interface
options = {
powerManagement.scsiLinkPolicy = mkOption {
default = "";
example = "min_power";
@ -16,7 +16,7 @@ with pkgs.lib;
the kernel configures "max_performance".
'';
};
};
@ -25,19 +25,20 @@ with pkgs.lib;
config = mkIf (config.powerManagement.scsiLinkPolicy != "") {
jobs."scsi-link-pm" =
{ description = "Set SCSI link power management policy";
{ description = "SCSI Link Power Management Policy";
startOn = "started udev";
startOn = "stopped udevtrigger";
task = true;
script = ''
shopt -s nullglob
for x in /sys/class/scsi_host/host*/link_power_management_policy; do
echo ${config.powerManagement.scsiLinkPolicy} > $x
done
'';
};
};
}