VolumeSnapshotClass parameters

The chart creates one VolumeSnapshotClass, mgxcsi-snapshotclass. Its parameters decide what a snapshot means (a point in time, or a rolling backup), where the objects land in S3, and what happens to them when the Kubernetes object goes away.

#Parameters

Helm value	Parameter	Default	Description
`config`	`config`	server default	Snapshot plugin config profile. Leave unset and the pool defaults it.
`incremental`	`incremental`	`"yes"`	`"yes"` keeps full plus incremental history, so every snapshot is an independently restorable point in time. `"no"` keeps a single rolling latest-only backup and point-in-time restore is not possible.
`storageClass`	`storage_class`	pool config — `GLACIER_IR`	Destination S3 storage class. Use one the objects can be read from directly: `STANDARD`, `STANDARD_IA`, `ONEZONE_IA`, `INTELLIGENT_TIERING`, `GLACIER_IR`. Empty means the parameter is not sent and the pool's snapshot config decides, which ships as `GLACIER_IR`.
`labels`	`labels`	unset	Per-snapshot labels.
`deletionPolicy`	—	`Delete`	`Delete` or `Retain` — the fate of the backup in S3 when the `VolumeSnapshot` is removed.
`isDefault`	—	`false`	Mark the class as the cluster default.

#Several classes, one per retention tier

Because the destination is a property of the class, retention tiers are expressed as classes rather than as bucket lifecycle rules — what you asked for is what the snapshot did, and kubectl get volumesnapshotclass shows it:

yaml

apiVersion: snapshot.storage.k8s.io/v1
kind: VolumeSnapshotClass
metadata:
  name: mgxcsi-snapshotclass-monthly
driver: csi.migrx.io
deletionPolicy: Retain
parameters:
  incremental: "yes"
  storage_class: GLACIER_IR
  labels: "retention=monthly"

Not every S3 class works as a destination. GLACIER and DEEP_ARCHIVE need an explicit S3 restore before their objects can be read again, and a restore reads them directly — so a snapshot sent there is not restorable without that step. Stay on the instant-retrieval classes above; GLACIER_IR is the cheapest of them.

See Snapshots and restore for taking and restoring them.