nixpkgs/modules/tasks/lvm.nix

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{ config, pkgs, ... }:
{
###### implementation
config = {
jobs.lvm =
{ startOn = "started udev or new-devices";
script =
''
# Scan for block devices that might contain LVM physical volumes
# and volume groups.
${pkgs.lvm2}/sbin/vgscan --mknodes
# Make all logical volumes on all volume groups available, i.e.,
# make them appear in /dev.
${pkgs.lvm2}/sbin/vgchange --available y
initctl emit -n new-devices
'';
task = true;
};
environment.systemPackages = [ pkgs.lvm2 ];
services.udev.packages = [ pkgs.lvm2 ];
};
}