Consistency group moving

摘要

A computer implemented method, system, and computer program product for moving a consistency group from a first replication cluster to a second replication cluster, without journal loss, the method comprising moving a splitter splitting the consistency group to tracking mode, flushing pending IO to the consistency group, stopping replication, moving the consistency group to a second cluster, and starting replication of the consistency group at the second cluster.

主权项

1. A computer implemented method for moving a consistency group from a first replication cluster to a second replication cluster, without journal loss, the method comprising:
moving a splitter, running on a hypervisor, splitting IO of a first consistency group to tracking mode, wherein the first consistency group includes a replication journal and is replicating IO directed to one or more consistency group volumes to one or more replica volumes; flushing pending IO to the first consistency group, wherein the flushing pending IO includes writing the IO to the replication journal of the first consistency group; stopping replication of the IO of the one or more consistency group volumes of the first consistency group located at the first replication cluster; moving replication from the first consistency group at the first replication cluster to the second replication cluster as a second consistency group; wherein the second consistency group located at the second replication cluster includes one or more replica volumes and a replication journal; configuring the splitter to replicate to the second consistency group located at the second replication cluster instead of the first consistency group at the first cluster; and starting replication of the IO to the second consistency group at the second replication cluster.