Shared-Host Resource Reservation with Environment Identification
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Solution Overview
Problem
Existing storage systems face inefficiencies in managing and optimizing flash storage devices, particularly in handling data operations and device management, leading to increased latency and reduced reliability.
Innovation Solution
Implementing a direct-mapped flash storage system where higher-level processes manage data operations directly on flash drives without intermediate storage controllers, utilizing non-volatile RAM for buffering and offloading device management tasks from storage drives, and employing zoned storage devices for efficient data allocation and garbage collection.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If intermediate storage controllers are used to manage flash storage devices, then device management is simplified, but write operations increase and performance decreases
Solution Approach 1:
The patent extracts the flash storage device management from the traditional storage controller path and allows higher-level processes to manage data operations directly on flash drives. This eliminates unnecessary intermediate storage controllers and write operations, directly improving storage performance while maintaining management capabilities through the direct-mapped architecture.
2Ease of operation
If traditional storage controllers are used, then data operations are managed centrally, but latency increases and reliability decreases
Solution Approach 1:
The patent segments the centralized storage controller functionality and distributes it across multiple higher-level processes that can directly manage data operations on flash storage devices. This segmentation reduces latency by eliminating single-point bottlenecks and improves reliability through distributed management, while maintaining coordinated control across the storage system.
3Productivity
If flash storage devices are directly accessed by higher-level processes, then write operations are reduced, but system complexity increases
Solution Approach 1:
The patent introduces non-volatile RAM as an intermediary between higher-level processes and flash storage devices. This mediator buffers data operations, manages wear-leveling, and handles garbage collection, thereby reducing write operations to flash memory while maintaining manageable system complexity through a dedicated caching layer.
4Productivity
If non-volatile RAM is used for buffering, then write operations to flash are reduced, but memory requirements increase
Solution Approach 1:
The patent changes the state of the buffering medium by using non-volatile RAM instead of traditional volatile RAM. This parameter change allows the buffer to retain data without power, reducing the need for frequent writes to flash storage while requiring less total memory capacity compared to volatile alternatives, as data persists across power cycles.
Data Source
AI summary
Various embodiments relate to cooperative resource reservation for concurrent virtual environments on a shared host. In an embodiment, a method involves concurrently executing multiple virtual environments, including a first and a second virtual environment, on the shared host. A host execution environment issues a request on behalf of the first virtual environment to reserve a resource, with the request containing identifying information specific to the first virtual environment. The identifying information included in the reservation allows the controller of the resource to be identified despite the virtual environments sharing the initiator identity of the host.