Move to Instance

Introduction

It is possible to move namespace entries from one EOS instance to another by only doing metadata operations. The workflow is intended to be used by CTA operators. It is important to do the necessary checks, as failure to do so can lead to orphaned data on tape.

Procedure

Using the cta-eos-namespace-inject tool combined with eos rm --no-workflow, it is possible to move namespace entries to another EOS instance.

1. Inject files into the new EOS instance with cta-eos-namespace-inject
2. Make sure that all files have been moved. To be sure that the files have been moved properly, check that the namespace entries are present and try to retrieve some of the relocated files from the new instance.
3. Use eos rm --no-workflow on the old EOS instance to remove the namespace entries without removing the archived file.