RESYNCHRONIZATION WITH COMPLIANCE DATA PRESERVATION

摘要

One or more techniques and/or computing devices are provided for implementing resynchronization operations. For example, a disaster recovery relationship may be established between a source storage volume, hosted by a source storage node, and a destination storage volume hosted by a destination storage node, such that data is replicated from the source storage volume to the destination storage volume for disaster recovery purposes. If the disaster recovery relationship breaks, then new compliance data, locked down into a write once read many state, may be created at the destination storage volume. A resynchronization operation may be performed to reestablish the disaster recovery relationship, while preserving the new compliance data so that a compliance policy is not violated. For example, cloned storage volumes, copying compliance data to source storage volumes before resynchronization, and/or moving compliance data to local volumes may be used to implement resynchronization operations while preserving compliance data.

主权项

1. A method comprising:
establishing, by a storage server, a disaster recovery relationship between a source storage volume, hosted by a source storage node, and a destination storage volume hosted by a destination storage node; identifying a break of the disaster recovery relationship resulting in the destination storage volume being available for primary client data access; receiving a request to implement a resynchronization operation to synchronize the destination storage volume to a current state of the source storage volume based upon a common snapshot between the destination storage volume and the source storage volume; comparing an active file system of the destination storage volume against the common snapshot to determine whether the destination storage volume comprises compliance data, locked down into a write once read many state, not comprised within the source storage volume; and responsive to identifying compliance data:
creating a cloned storage volume using the common snapshot; andimplementing the resynchronization operation to synchronize the cloned storage volume to the current state of the source storage volume.