There are apparently different levels of synchronization, which we can observe from this sentence: "A (level-0 resync in progress) message indicates that a plex cannot be rejoined."*1
"If the mirrored aggregate was in an initial resynchronization state (level-0) before the forced takeover, you cannot rejoin the two aggregates. You must re-create the synchronous mirror to reestablish the MetroCluster configuration."
Level-0 means that there was never an actively sync dataset: although the relationship is set up, the initial full transfer never completed.
*1http://hd.kvsconsulting.us/netappdoc/733docs/html/v-series/metro/disaste3.htm
http://publib.boulder.ibm.com/infocenter/cicsts/v3r2/index.jsp?topic=%2Fcom.ibm.cics.ts.intercommunication.doc%2Ftopics%2Fdfht1c0082.html
"If the mirrored aggregate was in an initial resynchronization state (level-0) before the forced takeover, you cannot rejoin the two aggregates. You must re-create the synchronous mirror to reestablish the MetroCluster configuration."
Level-0 means that there was never an actively sync dataset: although the relationship is set up, the initial full transfer never completed.
*1http://hd.kvsconsulting.us/netappdoc/733docs/html/v-series/metro/disaste3.htm
http://publib.boulder.ibm.com/infocenter/cicsts/v3r2/index.jsp?topic=%2Fcom.ibm.cics.ts.intercommunication.doc%2Ftopics%2Fdfht1c0082.html
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