example)
pool name 확인
# ceph osd pool stats
pool 리스트 확인
# rbd list images
파일로 export
# rbd export images/063ce109-eeca-4edd-a398-5ec351da81df aa.qcow2
# rbd help export
usage: rbd export [--pool <pool>] [--image <image>] [--snap <snap>]
[--path <path>] [--no-progress]
<source-image-or-snap-spec> <path-name>
Export image to file.
Positional arguments
<source-image-or-snap-spec> source image or snapshot specification
(example:
[<pool-name>/]<image-name>[@<snap-name>])
<path-name> export file (or '-' for stdout)
Optional arguments
-p [ --pool ] arg source pool name
--image arg source image name
--snap arg source snapshot name
--path arg export file (or '-' for stdout)
--no-progress disable progress output
