High availability protection for asynchronous disaster recovery

摘要

A computer-implemented method, carried out by one or more processors, for a modified asynchronous replication session. In an embodiment, the method comprises the steps of acquiring a lock on a volume configuration, where the lock prevents changes to the volume configuration between a first volume and a second volume at a remote site. Internal control block information is updated, where the update includes at least a volume serial number of the first volume matching a volume serial number of the second volume. Responsive to updating internal control block information, the acquired lock is released to allow changes to the volume configuration.

主权项

1. A method for a modified asynchronous replication session, the method comprising:
acquiring, by one or more processors, a lock on a volume configuration, wherein the lock prevents changes to the volume configuration between a first volume and a second volume at a remote site; updating, by one or more processors, internal control block information, wherein the update includes at least a volume serial number of the first volume matching a volume serial number of the second volume; responsive to updating internal control block information, releasing, by one or more processors, the acquired lock to allow changes to the volume configuration; performing, by one or more processors, a query to discover a synchronous relationship between the first volume and the second volume; determining, by one or more processors, if data in the first volume includes corresponding data in the second volume; and responsive to determining a portion of data in the first volume does not include a corresponding portion of data in the second volume, suspending, by one or more processors, the synchronous relationship between the first volume and the second volume.