On Tue, Nov 22, 2016 at 5:31 AM, Zhongyan Gu <zhongyan.gu@xxxxxxxxx> wrote: > So if initial snapshot is NOT specified, then: > rbd export-diff image@snap1 will diff all data to snap1. this cmd equals to > : > rbd export image@snap1. Is my understand right or not?? While they will both export all data associated w/ image@snap1, the "export" command will generate a raw, non-sparse dump of the full image whereas "export-diff" will export only sections of the image that contain data. The file generated from "export" can be used with the "import" command to create a new image, whereas the file generated from "export-diff" can only be used with "import-diff" against an existing image. -- Jason _______________________________________________ ceph-users mailing list ceph-users@xxxxxxxxxxxxxx http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com
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