Revision as of 11:45, 22 October 2013

Overview

The Provisioning-Backup-KVM Daemon is written in Perl and uses the mechanisms described under stoney core: OpenLDAP directory data organisation.

Workflow

This is the simplified workflow for the Provisioning-Backup-KVM Daemon. The Subroutines (snapshot, merge and retain) are shown later.

Figure 1: Simplified prov-backup-kvm workflow

You can modify/update this workflow by editing File:KVM-Backup-simple.xmi (you may need Umbrello UML Modeller diagram programme for KDE to display the content properly).

Snapshot

Figure 2: Detailed workflow for the snaphshot process

You can edit this workflow with the following file (you may need umbrello to modify it): File:KVM-Backup-Workflow-detailed.xmi

Merge

Figure 2: Detailed workflow for the merge process

You can edit this workflow with the following file (you may need umbrello to modify it): File:KVM-Backup-Workflow-detailed.xmi

Retain

Figure 3: Detailed workflow for the retain process

You can edit this workflow with the following file (you may need umbrello to modify it): File:KVM-Backup-Workflow-detailed.xmi

Next steps

• Change the behaviour of the snapshot/merge process
  • No longer merge the original file into the new one but merge (commit) backing store file back into original one
    • Like that we are able to reduce the backup (merge) time a lot.
    • Needs different behaviour for save -> copy/move -> create new image -> restore -> merge