Project: RFE
Issue Type[s]: Features

1. Proposed title of this feature request:-

Quiesce point for PV for backup purpose

2. What is the nature and description of the request?

Establish quiesce point for PV before taking snapshot backup.
Customer currently does "--scale=0" for user application, which is not managed by Operator.
But for other components of Openshift: Image-Registry, Prometheus and Elasticsearch, there is no recommended way.

CU is interested in somewhat similar functionality: https://github.com/kubernetes/enhancements/blob/master/keps/sig-storage/20190120-execution-hook-design.md
And "how to configure ExecutionHook for ImageRegistry, ElasticSearch, Prometheus and AlertManager?"

3. Why does the customer need this? (List the business requirements here)

PV data may be corrupted if we didn't establish a quiesce point before taking a snapshot.

4. List any affected packages or components.

• Prometheus Operator