zramraid/zramraid.deb/etc/zramraid/zramraid.conf

{
  "info": "id - md[id], image - is the path to the media to mount",
  "log": "/var/log/syslog",
  "limit_free_mem": {
    "info": "size - the parameter 10-100% or 1024Kb...; Caution - the limit use free memory!",
    "size": "90",
    "value_size": "%"
  },
  "md": [
    {
      "id": "1",
      "info": "'test disk 1'",
      "image": "../kvm/disk1.img"
    }
  ]
}