Kory Draughn

korydraughn@renci.org

Software Developer, iRODS Consortium

June 8-11, 2021

iRODS User Group Meeting

Virtual Event

NFSRODS v2.0.0

NFSRODS v2.0.0

Overview

• Brief description of NFSRODS
• What's changed since the last release
• The list operation (i.e. /bin/ls)
• Future Work

What is NFSRODS?

A standalone NFSv4.1 server that enables presents iRODS as a mountable filesystem.

• Configurable
• Users do not have to learn icommands
• Users do not have to install any additional packages
• Supports many common *nix commands and software

What's changed since v1.0.0?

13 issues have been resolved.

• NFSRODS now uses Jargon Connection Caching
• The mtime rule engine plugin requirement has been relaxed
• The rename operation (i.e. mv) now supports overwriting data objects
• The portmap service message warning has been resolved

All resolved issues can be found at the following URL.

• https://github.com/irods/irods_client_nfsrods/releases/tag/2.0.0

The list operation

Prior implementations had issues.

• Didn't handle large collections
  • Results were truncated due
  • The implementation was incorrect
• Didn't support Oracle databases
  • Incompatible specific queries
• Slow

The list operation (cont.)

These issues have been resolved.

• NFSRODS now caches many if not all results obtained through Jargon
• Added options to Jargon that enable support of Oracle. See the troubleshooting section of the NFSRODS README for details
• We learned that using a log level that results in a lot of messages degrades performance
• We learned that applying color to the output triggers more stat operations (which means more network traffic)

The list operation (cont.)

Performance Comparison between v1 and v2.

Tested using Ubuntu 16.04 / iRODS v4.2.9 / Postgres.

Future Work

• Add parallel I/O support for large file transfers
• Investigate support of metadata via extended file attributes
• SMBRODS

Thank you!

Questions?