Storage Processor Reset Logic via Partner Status Monitoring
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Solution Overview
Problem
In high-availability data arrays, existing systems face challenges in efficiently managing storage processors when configuration IO requests fail, particularly in determining whether to reset a storage processor based on the status of a redundant partner, which can lead to delays or inappropriate resets.
Innovation Solution
A method where a first storage processor receives a configuration IO request and, upon failure, determines the status of a second storage processor to decide whether to reset itself, considering indicators such as being online, offline, resetting, or preparing to reset, thereby optimizing the active-active arrangement for data array management.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a storage processor resets itself upon configuration IO failure, then system reliability improves, but system complexity increases due to status monitoring and decision logic
Solution Approach 1:
The storage processor autonomously monitors its own operational status and makes self-directed reset decisions based on detected failures and partner status, eliminating the need for external intervention and reducing management complexity
Solution Approach 2:
The system continuously monitors the operational status of storage processors and uses this feedback to dynamically determine whether to initiate a reset, creating a closed-loop control mechanism that adapts to real-time system conditions
2Stability of the object's composition
If the storage processor waits for partner status before resetting, then system stability improves, but response time worsens
Solution Approach 1:
The system performs preliminary status assessment of the partner storage processor before initiating a reset, determining in advance whether the partner is in a state that permits or prohibits resetting, thereby preventing premature or inappropriate resets while maintaining efficient response time
3Reliability
If configuration IO requests are strictly enforced, then data array integrity improves, but system productivity decreases due to frequent failures
Solution Approach 1:
The system changes the state parameter of the storage processor from operational to reset based on the outcome of configuration IO requests and partner status, dynamically adjusting system behavior to balance integrity requirements with operational productivity
Data Source
AI summary
A method, computer program product, and computing system for receiving, on a first storage processor, a configuration IO request concerning a data array coupled to the first storage processor. The configuration IO request is provided to the data array for execution. A failure indication that the configuration IO request failed to execute is received. In response to receiving the failure indication, a status indicator is determined for a second storage processor coupled to the data array. Whether to reset the first storage processor is determined based, at least in part, upon the status indicator of the second storage processor.