Re: Question about writing a program that transfer snapshot diffs between ceph clusters

Peter Maloney <peter.maloney@xxxxxxxxxxxxxxxxxxxx> · Tue, 1 Nov 2016 10:22:35 +0100



    On 11/01/16 06:57, xxhdx1985126 wrote:

    
        Hi, everyone.
        

        I'm trying to write a program based on the librbd API that
          transfers snapshot diffs between ceph clusters without the
          need for a temporary storage which is required if I use the
          "rbd export-diff" and "rbd import-diff" pair.
      
    
    You don't need a temp file for this... eg.

    
    ssh node1 rbd export-diff rbd/blah@snap1 | rbd import-diff rbd/blah

    ssh node1 rbd export-diff --from-snap snap1 rbd/blah@snap2 | rbd
    import-diff rbd/blah

    
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