DISTRIBUTED ENDPOINT MANAGEMENT...Distributed Endpoint Management (DEM): An Open-Source Project...
Transcript of DISTRIBUTED ENDPOINT MANAGEMENT...Distributed Endpoint Management (DEM): An Open-Source Project...
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15th ANNUAL WORKSHOP 2019
DISTRIBUTED ENDPOINT MANAGEMENTAN NVME-OF™ SCALE-OUT MANAGEMENT SOLUTION
Phil Cayton
March, 2019
Intel Corporation
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AGENDA
▪ NVMe over Fabrics (NVMe-oF) Overview
▪ Current State of NVMe-oF Management and Administration
▪ Distributed Endpoint Management (DEM) Project
▪ Brief Demonstration
▪ Development Opportunities and Wrap-up
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NVME OVER FABRICS
NVMe: industry standard interface and storage protocol for PCIe SSDs
▪ High-performance, low-latency PCI SSD interface
▪ Eliminates unnecessary protocol translations (i.e., SCSI)
▪ Defines partitioning PCIe SSDs into one or more subsystems
NVMe-oF: extends NVMe efficiency over Fabrics
▪ Builds on base NVMe architecture with thin encapsulation
of base NVMe across a fabric
▪ Enables low-latency and high IOPS access to
remote NVMe storage
▪ Defines end-to-end mechanisms to transfer
NVMe commands and data structures
The NVMe-oF spec is not Fabric specific;
separate Transport Bindings are defined for each Transport
NVMe-oF Overview
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NVME OVER FABRICS
Hosts
▪ Discover provisioned NVMe-oF
resources from Targets
▪ Connect to provisioned resources
Targets
▪ Create logical NVMe subsystems and Controllers that are presented to Hosts
▪ Logically map NVMe Namespaces to physical NVMe block devices
▪ Export NVMe subsystems virtualizing NVM Namespaces
▪ May be provisioned to allow individual Hosts access to specific resources
NVMe-oF Overview
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DISTRIBUTED ENDPOINT MANAGEMENT
Linux In-kernel Implementation only supports local management
Each individual Target is either manually or statically configured
▪ Configure each Fabric with Address, Port, …
▪ Define each NVMe-oF Subsystem
▪ Assign NVMe resources to each NVMe-oF Subsystem
▪ Set up Individual Host Access rights to each NVMe-oF Subsystem
Each individual Host either accesses NVMe-oF resources through:
▪ Static predefined configurations
▪ Manual resource discovery process (as defined by NVMe-oF specification)
• Connects to each individual Target
• Requests resources on that Target that they may access
Limits usability flexibility, scale of dynamic installations of NVMe-oF
Current State of NVMe-oF Management and Administration
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DISTRIBUTED ENDPOINT MANAGEMENT
(DEM)
PROJECT
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Distributed Endpoint Management (DEM): An Open-Source Project
Enable efficient, dynamic configuration and provisioning of NVMe-oF Resources
Started out as a strawman driving specification changes into NVMe, NVMe-oF, and NVMe-MI
Management suite enabling:
▪ Remote configuration of NVMe-oF resources through RESTful interface
▪ Centralized enumeration of provisionedresources
▪ Single source for notification of changesto resources
Adopted by UNH-IOL with additional scriptswritten for Interoperability Test Suite
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Distributed Endpoint Management (DEM): An Open-Source Project
Enable efficient, dynamic configuration and provisioning of NVMe-oF Resources
Started out as a strawman driving specification changes into NVMe, NVMe-oF, and NVMe-MI
Management suite supporting:
NVMe-oF Transports
▪ RDMA - Validated on IB/iWARP/RoCE
▪ TCP
Configuration via
▪ In-band (i.e., using NVMe-oF protocol)
▪ Out-of-Band (i.e., using RESTful interfacevia JSON)
DISTRIBUTED ENDPOINT MANAGEMENTDEM Project
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Project Components
Discovery controller + Management (DEM)
Endpoint Manager (DEM-EM) – customized for Target implementation
▪ In-Band Mode
▪ Out-of-Band Mode
Optional Host Tools
▪ Auto Connect (DEM-AC)
▪ Discovery Log Page Monitor (DEM-DM)
RESTful Management Interfaces
▪ Web Pages (HTML / CSS files)
▪ Command Line Interface (DEM-CLI)`
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Discovery controller + Management (DEM)
▪ Primary component for remote configuration and provisioning
▪ Plug-in module architecture for NVMe-oF supported Fabrics
▪ Configures remote NVMe resources via In-Band or Out-of-Band interfaces
▪ Collects & distributes tailored Discovery Log Pages to Hosts
▪ Receives notification of changes to NVMe-oF resources
▪ Reports changes to NVMe-oF resources to affected registered Hosts
▪ Enables additional access restrictions
DISTRIBUTED ENDPOINT MANAGEMENTProject Components
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Endpoint Manager (DEM-EM)
▪ Agent running on Target enabling remote configuration
▪ Reuses DEM plug-in module architecture for NVMe-oF supported Fabrics
▪ Plug-in configuration model enabling implementation-specificmanagement of NVMe-oF resources
▪ In-Band configuration based on proposed changesto NVMe-MI specification
▪ Out-of-Band RESTful configuration based on proposed changes to RF/SF
▪ Used for Targets not managed byother means
DISTRIBUTED ENDPOINT MANAGEMENTProject Components
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Optional Host Tools
▪ Reuses DEM plug-in module architecture for NVMe-oF supported Fabrics
Auto Connect (DEM-AC)
▪ Establishes persistent connection
▪ Collects Discovery Log Pages
▪ Automatically connects to its provisioned resources
Discovery Log Page Monitor (DEM-DM)
▪ Establishes persistent connection
▪ Reports Log Change Events and displays updated Discovery Log Pages
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RESTful Management Interfaces
DEM Command Line Interface (DEM-CLI)
▪ Local Interface to the DEM via console command line
Web interface
▪ Interface to the DEM via web interface
▪ Project contains complete set of HTML, CSS, and JS files
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BRIEF
DEM-ONSTRATION
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DEMONSTRATION
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Screen shows interfaces Hosts use to access Log Pages from the DEM
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DEMONSTRATION
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Configure remote Target to determine existing configuration
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DEMONSTRATION
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First step, add the Target
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DEMONSTRATION
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Set the Target as Locally Managed. This will allow DEM to view a Target’s configuration
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DEMONSTRATION
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Next, view the Target to add a Port ID and Subsystem to establish a NVMe-oF Controller
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DEMONSTRATION
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Next, add a Port ID
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DEMONSTRATION
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Provide the existing information to connect to the Target. Info must be known a priory for connection to the existing configuration
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DEMONSTRATION
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Next, add an arbitrary Subsystem for the creation of a NVMe-oFController
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DEMONSTRATION
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Provide the Subsystem NQN and set to Allow Any Host access
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DEMONSTRATION
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Now that there is a Controller to connect to, DEM can query the Target for the set of preconfigured Log Pages
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DEMONSTRATION
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This screen shows a preconfiguredLog Page that does not match how the DEM has been configured as is evident from the Unattached heading
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DEMONSTRATION
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Next, the Target will be reconfigured to allow the DEM to configure the Target
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DEMONSTRATION
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The Target is configured for Out-of-Band Management throughthe DEM-EM residing on the Target.Admin must know how Target EM is configured/started
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DEMONSTRATION
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The DEM has now retrieved the Interfaces and NVMe Namespace Devices exported by the Target
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DEMONSTRATION
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Once the Interfaces have be retrieved, setting of the Port ID will be different from the prior screen
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DEMONSTRATION
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Instead of providing the Transport Type, Address and Family, the Interface must be selected fromthe list
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DEMONSTRATION
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Once a configuration is created, it can be pushed to the Target to replace any existing configuration
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DEMONSTRATION
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Given this operation is destructive, it needs to be confirmed before being executed
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DEMONSTRATION
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View the Target Log Pages to confirm the new configuration
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DEMONSTRATION
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View the Target Log Pages to confirm the new configuration
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DEMONSTRATION
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To complete the NVMe-oFconfiguration, the Subsystem needsNS Devices via NSIDs
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DEMONSTRATION
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To link the NS Device, an NS ID is required as well as selecting a NS Device from the available list
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DEMONSTRATION
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Finally,a complete Target configuration
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DEVELOPMENT OPPORTUNITIES AND WRAP-UP
OpenFabrics Alliance Workshop 201938
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Discovery controller + Management (dem)
▪ Redundancy and Failover
▪ Generate Log Pages for Targets without a Discovery Controller
▪ Target usage monitoring
▪ Convert DEM to RedFish / SwordFish schema
▪ Convert DEM in-band configuration to current NVMe-MI Specification proposal
Endpoint Manager (dem-em)
▪ Target usage monitoring
▪ Extend for other Targets
Support:
▪ More NVMe-oF Transports (e.g., FC)
▪ Asymmetric Namespace Access Groups
▪ Namespace Subtypes/Partitions
▪ Transport Required (TREQ)
▪ Multipath
DISTRIBUTED ENDPOINT MANAGEMENTDevelopment Opportunities
OpenFabrics Alliance Workshop 201939
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Currently Available:
▪ As a Dual GPL / BSD licensed project
▪ On GitHub (https://github.com/linux-nvme/nvme-dem)
▪ Wiki (https://github.com/linux-nvme/nvme-dem/wiki)
Clone
Use
Contribute
DISTRIBUTED ENDPOINT MANAGEMENTWrap-up
OpenFabrics Alliance Workshop 201940
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15th ANNUAL WORKSHOP 2019
THANK YOUPhil Cayton
Intel Corporation