Host-Storage Panic Recovery via Predefined Instructions
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Solution Overview
Problem
Conventional methods for detecting and recovering from device panic conditions in cloud computing systems are often invasive, time-consuming, and costly, leading to unnecessary hardware replacement and data corruption.
Innovation Solution
A panic management system that enables cooperative detection and recovery between host and storage systems using non-invasive approaches, including setting panic bits, asynchronous event notifications, and predefined recovery instructions to prevent data corruption and facilitate normal operation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional power cycling methods are used to recover from device panic conditions, then device reliability is improved, but loss of time increases and device complexity increases
Solution Approach 1:
The patent implements preliminary action by establishing a contract and recovery instructions between host and storage systems before panic conditions occur. The storage system prepares recovery capabilities in advance, including setting panic bits and providing asynchronous event notifications, so that when a panic condition occurs, the system can immediately execute predefined recovery actions without time-consuming diagnostic procedures or invasive power cycling.
2Reliability
If invasive recovery methods are used, then device reliability is improved, but ease of operation worsens
Solution Approach 1:
The patent implements self-service by enabling the storage system to autonomously detect panic conditions through panic bits, notify the host system via asynchronous events, and execute recovery actions without requiring external intervention. The storage system manages its own recovery process using predefined instructions, eliminating the need for manual power cycling or invasive host-system actions while maintaining high reliability.
3Reliability
If hardware replacement is used to address failure conditions, then reliability is improved, but loss of substance increases and loss of time increases
Solution Approach 1:
The patent implements discarding and recovering by enabling recovery of storage systems from panic conditions through software-based mechanisms rather than physical hardware replacement. The system recovers functional capability through panic bit detection and asynchronous event-driven recovery procedures, preventing the premature discarding of operational hardware and reducing electronic waste while maintaining system reliability.
4Reliability
If conventional detection methods are used, then reliability is improved, but device complexity increases
Solution Approach 1:
The patent implements intermediary by introducing panic bits as standardized indicators that mediate between the storage system's internal state and the host system's detection capabilities. These panic bits serve as simple, uniform signals that enable reliable panic condition detection without requiring complex diagnostic procedures, invasive monitoring, or complicated communication protocols between host and storage systems.
Data Source
AI summary
The present disclosure relates to systems, methods, and computer readable media for identifying and responding to a panic condition on a storage system on a computing node. For example, systems disclosed herein may include establishing recovery instructions between a host system and a storage system in responding to a future instance of a panic condition. The storage system may provide an indication of a self-detected panic condition in a variety of ways. In response to identifying the panic condition, the host system may perform one or more recovery actions in accordance with recovery instructions accessible to the host system. This may include performing resets of specific components and reinitializing communication between the host system and storage system in less invasive ways than slower and more expensive conventional approaches for responding to panic conditions on computing nodes.