iRODS Overview

Kory Draughn

Chief Technologist

iRODS Consortium

April 15-16, 2024

Library of Congress Designing Storage Architectures 2024

Washington, D.C.

Our Membership

Consortium

Member

Consortium

Member

Consortium

Member

Our Business Model

Start with Proof of Concept

  • Use Case Driven
  • Hands on
  • Service and Support Contract
  • Master Services Agreement

 

Consortium Membership

  • Four Levels - $11k to $165k, annually
  • 10 to 300 hours of support
  • Participation in Software roadmap
  • Discounted hourly rate

 

Tier 3 Support

  • Systems Integrators
  • Compute Vendors
  • Storage Vendors

What is iRODS?

Open Source

  • C++ client-server architecture
  • BSD-3 Licensed, install it today and try before you buy

 

Distributed

  • Runs on a laptop, a cluster, on premises or geographically distributed

 

Data Centric & Metadata Driven

  • Insulate both your users and your data from your infrastructure

iRODS as the Integration Layer

Why use iRODS?

People need a solution for:

  • Managing large amounts of data across various storage technologies
  • Controlling access to data
  • Searching their data quickly and efficiently
  • Automation

 

The larger the organization, the more they need software like iRODS.

The iRODS Data Management Model

Core Competencies

Policy

Capabilities

Patterns

iRODS Core Competencies

The underlying technology categorized into four areas

Data Virtualization

Combine various distributed storage technologies into a Unified Namespace

  • Existing file systems
  • Cloud storage
  • On premises object storage
  • Archival storage systems

iRODS provides a logical view into the complex physical representation of your data, distributed geographically, and at scale.

Projection of the Physical into the Logical

Logical Path

Physical Path(s)

Data Discovery

Attach metadata to any first class entity within the iRODS Zone

  • Data Objects
  • Collections
  • Users
  • Storage Resources
  • The Namespace

iRODS supports automated and user-provided metadata which makes your data and infrastructure more discoverable, operational, and valuable.

Metadata Everywhere

Workflow Automation

Policy Enforcement Points (PEPs) are triggered by every operation within the framework

  • Authentication
  • Storage Access
  • Database Interaction
  • Network Activity
  • Extensible RPC API 

The iRODS rule engine framework provides the ability to capture real world policy as computer actionable rules which may allow, deny, or add context to operations within the system.

Dynamic Policy Enforcement

The iRODS rule may:

  • restrict access
  • log for audit and reporting
  • provide additional context
  • send a notification

Dynamic Policy Enforcement

A single API call expands to many plugin operations all of which may invoke policy enforcement

Plugin Interfaces:

  • Authentication
  • Database
  • Storage
  • Network
  • Rule Engine
  • Microservice
  • RPC API

Secure Collaboration

iRODS allows for collaboration across administrative boundaries after deployment

  • No need for common infrastructure
  • No need for shared funding
  • Affords temporary collaborations

iRODS provides the ability to federate namespaces across organizations without pre-coordinated funding or effort.

iRODS as a Service Interface

Federation - Shared Data and Services

What is a Policy

A Definition of Policy

 

 

A set of ideas or a plan of what to do in particular situations that has been agreed to officially by a group of people...

 

 

So how does iRODS do this?

iRODS Policies

The reflection of real world data management decisions in computer actionable code.

 

(a plan of what to do in particular situations)

Possible Policies - The What

  • Data Movement
  • Data Verification
  • Data Retention
  • Data Replication
  • Data Placement
  • Checksum Validation
  • Metadata Extraction
  • Metadata Application
  • Metadata Conformance
  • Replica Verification
  • Vault to Catalog Verification
  • Catalog to Vault Verification
  • ...

Policy Composition

Consider Storage Tiering:

 

  • Violating Object Identification
  • Data Movement
    • Data Replication
    • Data Verification
  • Data Retention
  • Packaged and supported solutions
  • Require configuration not code
  • Derived from the majority of use cases observed in the user community

iRODS Capabilities

Automated Ingest - Landing Zone

Automated Ingest - Filesystem Scanning

Storage Tiering

Core Competencies

Policy

Capabilities

Indexing

Core Competencies

Policy

Capabilities

Publishing

Deployment Patterns

Data to Compute

Compute to Data

Data Transfer Nodes

Filesystem Synchronization

Filesystem Synchronization

Data to Compute

Compute to Data

Data Transfer Nodes

Ingest to Institutional Repository

As data matures and reaches a broader community, data management policy must also evolve to meet these additional requirements.

The Data Management Model

iRODS S3 Functionality

https://github.com/irods/irods_resource_plugin_s3

The iRODS S3 storage resource plugin allows iRODS to use any S3-compatible storage device or service to hold iRODS Data Objects, on-premises or in the cloud.

 

This plugin can work as a standalone "cacheless" resource or as an archive resource under the iRODS compound resource. Either configuration provides a POSIX interface to data held on an object storage device or service.

The following S3 services and appliances (in no particular order) have been tested:

  • Amazon (AWS) S3
  • Fujifilm Object Archive
  • MinIO S3
  • Ceph S3
  • Spectra Logic Vail
  • Spectra Logic BlackPearl
  • Google Cloud Storage (GCS)
  • Wasabi S3
  • Oracle OCI
  • Quantum ActiveScale
  • Garage S3

Protocol Plumbing - Presenting iRODS as other Protocols

  • WebDAV
  • FUSE
  • HTTP
  • NFS
  • SFTP
  • K8s CSI
  • S3

Over the last few years, the ecosystem around the iRODS server has continued to expand.

 

Integration with other types of systems is a valuable way to increase accessibility without teaching existing tools about the iRODS protocol or introducing new tools to users.

 

With some plumbing, existing tools get the benefit of visibility into an iRODS deployment.

iRODS Scenario - S3 Eject

To "eject" a part of a user's data from an iRODS Zone...

  • User adds metadata to a Collection, designating it as ready to be 'ejected' to a particular S3 resource
  • The system recursively replicates all data objects under that Collection to the S3 resource
  • The system writes all associated metadata into a manifest file on the S3 resource
  • The system (optionally) recursively unregisters all data objects under that Collection from the S3 resource (and possibly all other resources)


Then, when ready...

  • A separate script can put or ingest the files into another iRODS Zone and associate all the metadata stored in the manifest file

Questions?

Thank you.

https://irods.org/ugm2024

May 28-31, 2024

Questions?

Use Cases

iRODS

The Wellcome Sanger Institute

Sanger - Replication

  • Data preferentially placed on resource servers in the green data center (fallback to red)
  • Data replicated to the other room.
  • Checksums applied
  • Green and red centers both used for read access.

Sanger - Metadata

attribute: library

attribute: total_reads

attribute: type

attribute: lane

attribute: is_paired_read

attribute: study_accession_number

attribute: library_id

attribute: sample_accession_number

attribute: sample_public_name

attribute: manual_qc

attribute: tag

attribute: sample_common_name

attribute: md5

attribute: tag_index

attribute: study_title

attribute: study_id

attribute: reference

attribute: sample

attribute: target

attribute: sample_id

attribute: id_run

attribute: study

attribute: alignment

  • Example metadata attributes
  • Users query and access data from local compute clusters
  • Users access iRODS locally via the command line interface

Sanger - Federation

Maastricht DataHub

Maastricht DataHub

SURF Scale Out Pilot

University Zone

Catalog Provider

University Zone

Server Hosting Environment

 Catalog Consumer

Tape Archive

Disk Storage

Object Storage

 Catalog Consumer

Catalog Provider

SURF EUDAT CDI

External Community Zones

Zone

Local Storage

CXFS

Tape Library

EUDAT University Zone

EUDAT University Zone

B2SAFE iRODS Federation

EUDAT Centers

iRODS Federation

ARCHIVE

GridFTP Data Movement

Catalog Provider

Catalog Provider

Catalog Provider

Catalog Provider

Questions?

Overview

iRODS Proof of Concept

Initial Goals

  1. Automatically Ingest data from a 'Landing Zone'
  2. Extract salient metadata - e.g. EXIF tags
  3. Tag Data Objects and Collections
    • Makes them Actionable and Discoverable
  4. Discover and interact with data on the command line
  5. Discover and interact with data via Metalnx
  6. Share data via Metalnx
  7. Interact with data via NFS and WebDAV

Automated Ingest

Any data that is discovered during a scan

  • Automatically registered to a storage resource
  • Metadata extracted and applied to the object in the catalog
  • Event possibly generated for audit trail

 

Users can view and access data and metadata from any client

Data Discovery with Metalnx

Automated Ingest has provided metadata for data discovery

 

The metadata can be directly inspected in Metalnx

 

The query builder can be used to identify data sets of interest via Attribute, Value, Unit matches

 

Queries to the system metadata may also be performed, searching on values such as file name, collection path, user, etc.

File System Presentations: Davrods

Davrods provides both a simple web based interface (via WebDAV) as well as the ability to mount a folder on the desktop

 

Davrods is an Apache Module implemented in C using the native iRODS POSIX API

 

Davrods can be used to edit data in-place, or to copy data to/from a user's collections

File System Presentations: NFSRODS

NFSRODS leverages the Java iRODS Client Library 'Jargon' and is implemented with NFS4J

 

NFSRODS acts as a Mid-Tier client to iRODS

 

NFSRODS projects iRODS ACLs into NFSv4 extended ACLs

 

NFSRODS can also be used to edit data in-place, or to copy data to/from a user's collections

Data Discovery with Command Line

Query using imeta, a command-line iRODS client utility:

imeta qu -d "Image Make" = Apple

iquest "%s/%s" "SELECT COLL_NAME, DATA_NAME WHERE META_DATA_ATTR_NAME = 'Image Make' AND META_DATA_ATTR_VALUE = 'Apple'"

Query using iquest, a command-line iRODS client utility:

Questions?