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Note that this command is equivalent to using per-instance commands for |
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each affected instance individually: |
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- ``--primary-only`` is equivalent to ``gnt-instance failover/migration`` |
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- ``--primary-only`` is equivalent to ``gnt-instance |
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failover/migration`` for non-DRBD instances, but for DRBD instances |
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it's different, and usually is a slow process (it will change the |
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primary to another node while keeping the secondary, this requiring |
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data copies, whereas failover/migrate will only toggle the |
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primary/secondary roles, a fast process) |
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- ``--secondary-only`` is equivalent to ``gnt-instance replace-disks`` |
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in the secondary node change mode (only valid for DRBD instances) |
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- when neither of the above is done a combination of the two cases is run |
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