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hi everyone!</div>
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I found It is hard to upgrade from a gluster version from 3.7.6 to 7.7,so I remove all the install package and delete all config file except the brick, and I resinstall the glusterfs 7.7, then reconfig the same volume name but use a temp brick.after everything
is ok ,then i stop the volume and replace the old brick , change the brick volume id as the new volume id , at last start the volume successfully.</div>
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What I want to know is if this is the right way to upgrade .<br>
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