https://github.com/irods/irods_resource_plugin_weighted_passthru

Weighted Passthru resource plugin for iRODS
https://github.com/irods/irods_resource_plugin_weighted_passthru

Last synced: 11 months ago
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Weighted Passthru resource plugin for iRODS

• Host: GitHub
• URL: https://github.com/irods/irods_resource_plugin_weighted_passthru
• Owner: irods
• License: other
• Created: 2015-03-31T01:38:08.000Z (over 11 years ago)
• Default Branch: master
• Last Pushed: 2015-04-01T14:57:37.000Z (over 11 years ago)
• Last Synced: 2025-01-15T01:42:34.553Z (over 1 year ago)
• Language: C++
• Size: 104 KB
• Stars: 0
• Watchers: 13
• Forks: 0
• Open Issues: 1
• Metadata Files:
  • Readme: README
  • License: LICENSE

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README

          
iRODS Weighted Passthru Resource Plugin

---------------------------------------

To build the Weighted Passthru Resource Plugin, you will need to have:

 - the iRODS Development Tools (irods-dev and irods-runtime) installed for your platform

     http://irods.org/download

Then to build this resource plugin:

  ./packaging/build.sh

To use this resource plugin:

  irods@hostname $ iadmin mkresc replResc replication

  irods@hostname $ iadmin mkresc weightedPTResc weighted_passthru "read=0.25;write=1.0"

  irods@hostname $ iadmin mkresc aChildResc unixfilesystem :/full/path/to/Vault1

  irods@hostname $ iadmin mkresc writeOnlyResc unixfilesystem :/full/path/to/Vault2

  irods@hostname $ iadmin addchildtoresc replResc aChildResc

  irods@hostname $ iadmin addchildtoresc replResc writeOnlyResc

  irods@hostname $ iadmin addchildtoresc weightedPTResc writeOnlyResc

  irods@hostname $ iput -R replResc foo.txt

The contextString above ("read=0.25;write=1.0") when creating weightedPTResc

contains a set of multipliers that affect the votes of its children.  During

a read, the weightedPTResc will multiply its child's vote by 0.25, rendering

it nearly always a last resort.  On a write, the 1.0 multiplier will have no

effect on the selection of which resources are eligible for accepting the replica.