THIS IS A TEST INSTANCE. ALL YOUR CHANGES WILL BE LOST!!!!
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MV downgrade: Once the MV version is downgraded, all the ELR related fields will be removed on the next partition change. The controller will also ignore the ELR fields.
Software downgrade: Not supportedAfter the MV version is downgraded, a metadata delta will be generated to capture the current status. Then the user can start the software downgrade.
Clean shutdown
It will be guarded by a new metadata version. Before that, the controller will treat all the registrations with unclean shutdowns.
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