nixpkgs/upstart-jobs/lvm.nix

{modprobe, lvm2, devicemapper}:

{
  name = "lvm";
  
  job = "
start on udev
#start on new-devices

script

    # Load the device mapper.
    ${modprobe}/sbin/modprobe dm_mod || true

    ${devicemapper}/sbin/dmsetup mknodes
    # Scan for block devices that might contain LVM physical volumes
    # and volume groups.
    ${lvm2}/sbin/vgscan --mknodes

    # Make all logical volumes on all volume groups available, i.e.,
    # make them appear in /dev.
    ${lvm2}/sbin/vgchange --available y

    initctl emit new-devices
    
end script

  ";

}