Patent attributes
Described embodiments provide systems and methods for online system recovery orchestration. Embodiments may include receiving a request to recover a system management process from a checkpoint. The system management initialization parameter file is updated by setting a flag to start from the checkpoint. A system management process is started with the updated initialization parameter and a copy of the system management repository is loaded. Volumes are recovered before data path module activation. Data modules are then activated with checkpoint offset information and data module journals are reformatted. Control modules are then activated with recovered volume configuration and control module journals are reformatted. Defragmentation mode is set to rollback mode and data on checkpoint stripes that were written after checkpoint creation are deleted. After waiting for the defragmentation rollback to complete the host IO direction is set to checkpoint stripes. Routing modules are activated and host IO operations are allowed.
