ManagedObjectBackends for HSM

parcio / julea

A Flexible Storage Framework for HPC

GNU Lesser General Public License v3.0

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ManagedObjectBackends for HSM #149

Open JBenda opened 2 years ago

JBenda commented 2 years ago

Add JManagedBackends a Object Backeand which is at runtime composeble of multiple Object Backends. JManagedBacends uses a policy module which can be used for HSM on that different object backends.

t-erxleben commented 1 year ago

Looks good to me, overall.

Some remarks:

Why do you use a different logging mechanism as other parts of JULEA?
I really like the concept of error checking macros. Maybe we should move them to a global level?
Please complete the documentation and check again for typos/grammar in existing documentation.

t-erxleben commented 1 year ago

One general question: How does this module relate to object distribution (for 'normal' objects) and JDistributedObject? As far as I have understood each JULEA server providing object storage will load this module to handle local tiering. Can it also handle different tiers on different JULEA servers?

JBenda commented 1 year ago

This module makes different ObjectBackends on one server appear to the outside as one ObjectServer, for distributed objects, they will be stripped between the servers as before, and are not effected by this module.