Fedora_Low_Level_Storage

common tasks

• complie: mvn package

location

• Github: https://github.com/bhle/bhle/tree/master/archival-storage/fedora/llstore
• akubra-llstore.xml: /opt/archival-storage/fedora/server/config

dependencies

• Fedora

modifying config files

1. In akubra-llstore.xml, modify the paths for objectStore, shortTermDataStreamStore and longTermDataStreamStore
2. Purge all objects in Fedora Repository, and restart Fedora

how to test if it's working

• Check whether the corresponding folder in akubra-llstore.xml (normally,/mnt/nfs/test/data/archival-storage/fedora/data) contains data ingested.

login information if necessary

• NONE

proxy information

• NONE

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installation

1. Purge all objects in Fedora Repository, then shut down the server;
2. Place akubra-mux-0.3.jar and bhle-llstore-0.0.1.jar in ${FEDORA_HOME}/tomcat/webapps/fedora/WEB-INF/lib;
3. Replace akubra-llstore.xml with the one in the install package, and modify the store paths and DataStream IDs according to your needs;
4. Restart the server.

how it works

A subclass of org.akubraproject.mux.AbstractMuxConnection overrides the getStore method to provide BlobStore according to the keywords of DataStream IDs in akubra-llstore.xml. And the filesystem storage is reused from akubra-fs (simple filesystem implementatio) and akubra-map (wraps an existing BlobStore to provide a blob id mapping layer) without any modification. Therefore, all the path mappings for objects and datastreams are still based on MD5 mapping.