Hello, two servers A (primary) and B (secondary), are each using DRBD 8.0.16 via protocol C.
Since only one can be migrated to 8.4 at a time, is it possible to - keep unchanged A (8.0.16) - install 8.4 on B (similar config with protocol C) - invalidate B data (created from 8.0.16) - sync A -> B and keep this for a few days. Does it safely work? Thank you and regards, Yves
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