Tested several times recently: upgrade 3.12.15 to 7.7 without problems.

Upgrade servers and clients first to 3.12.15 ( old version, take a look to repo site).

If volumes are replicated you could do it on-line, one by one, looking carefully with self-heal process.

For disperse volumes you must stop them before upgrades.

Hope it helps!

Ramon


El 26/08/20 a les 12:04, Sanju Rakonde ha escrit:
Hi,

I believe you can do an offline upgrade (I have never tried upgrading from 3.7 to 7.7, so there might be issues).

If you want to do a fresh install, after installing the 7.7 packages, you can use the same old bricks to create the volumes. but you need to add force at the end of volume create command.

On Wed, Aug 26, 2020 at 5:27 AM liu zhijing <[email protected] <mailto:[email protected]>> wrote:

    hi everyone!
    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.
    What I want to know is  if this is the right way to upgrade .


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Thanks,
Sanju


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