/output:.*percent ((\d+)/
and
/output:.*Usage:\s([.\d]+)GB.+([.\d]+)GB.+([.\d+])GB.+([.\d+])GB/
may be good patterns to start with.
/output:.*percent ((\d+)/
and
/output:.*Usage:\s([.\d]+)GB.+([.\d]+)GB.+([.\d+])GB.+([.\d+])GB/
may be good patterns to start with.