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This is unreleased documentation for SUSE® Storage 1.12 (Dev). |
V1 and V2 Volume Behavior and Feature Parity
This page summarizes the expected behavior differences between V1 and V2 volumes and provides a feature support matrix for the SUSE Storage v1.12.0 documentation set.
Expected Behavioral Differences
Snapshot Deletion Behavior
When deleting the snapshot that is the direct parent of volume-head, V1 and V2 volumes behave differently.
| Behavior | V1 Volume | V2 Volume |
|---|---|---|
Snapshot list result |
The snapshot remains in the list and is marked as removed. |
The snapshot is deleted immediately and disappears from the list. |
Snapshot CR behavior |
The Snapshot CR remains and reflects the removed state. |
The Snapshot CR is removed immediately. |
Reason |
The latest snapshot cannot be coalesced into the live |
The V2 data engine supports live merging of the parent snapshot into |
Cleanup timing |
Cleanup happens later, typically after another snapshot is created and purge can proceed. |
Cleanup completes as part of the delete operation. |
Snapshot Purge Behavior
Snapshot purge behavior also differs between V1 and V2 volumes.
In V1, purge is the operation that coalesces snapshots previously marked as removed. It runs separately from snapshot deletion and is subject to a per-node concurrency limit (Snapshot Heavy Task Concurrent Limit). As a result, removed snapshots may remain visible in the snapshot chain or API response until purge completes.
In V2, purge runs immediately and removes eligible system-created snapshots (those not created by the user) from the replica chain in one operation. The underlying storage layer performs the merge during the purge.
Revision Counter Behavior
Revision counter behavior differs between V1 and V2 volumes.
In V1, SUSE Storage supports revision counters for tracking replica updates. This mechanism can be used during startup and auto-salvage to help identify the replica with the latest update. For more information, see Revision Counter.
In V2, revision counters are not supported. V2 volumes do not maintain revision-counter-based replica tracking, and V1-specific revision counter settings do not apply.
Feature Support Matrix
Data Protection
| Feature | V1 | V2 | Support Notes |
|---|---|---|---|
Snapshot |
✔️ |
✔️ |
- |
Backup and Restore |
✔️ |
✔️ |
- |
DR Volume |
✔️ |
✔️ |
- |
System Backup and Restore |
✔️ |
✔️ |
- |
Snapshot Data Integrity Check |
✔️ |
✔️ |
- |
RWX Volume
| Feature | V1 | V2 | Support Notes |
|---|---|---|---|
Creation and Deletion |
✔️ |
✔️ |
- |
Encryption |
✔️ |
✔️ |
- |
Migratable RWX Volume |
✔️ |
✔️ |
- |
Volume Operations
| Feature | V1 | V2 | Support Notes |
|---|---|---|---|
Volume Expansion |
✔️ |
✔️ |
- |
Volume Cloning |
✔️ |
✔️ |
- |
Fast Volume Cloning |
Not Planned |
Planned |
Planned for SUSE Storage v1.12.1 |
Volume Encryption |
✔️ |
✔️ |
- |
Filesystem Trim |
✔️ |
✔️ |
- |
High Availability
| Feature | V1 | V2 | Support Notes |
|---|---|---|---|
Data Locality: disabled and best-effort |
✔️ |
✔️ |
- |
Data Locality: strict local |
✔️ |
Not supported |
TBD |
Auto Balance Replicas |
✔️ |
✔️ |
- |
Replica Rebuilding
| Feature | V1 | V2 | Support Notes |
|---|---|---|---|
Online Full Rebuilding |
✔️ |
✔️ |
- |
Online Delta Rebuilding |
✔️ |
✔️ |
- |
Online Fast Rebuilding |
✔️ |
✔️ |
- |
Offline Full Rebuilding |
✔️ |
✔️ |
- |
Offline Delta Rebuilding |
✔️ |
✔️ |
- |
Offline Fast Rebuilding |
✔️ |
Not supported |
TBD |
QoS |
Not supported |
✔️ |
- |
Backing Image
| Feature | V1 | V2 | Support Notes |
|---|---|---|---|
Creation and Deletion |
✔️ |
Not supported |
Replaced by Containerized Data Importer (CDI) in V2 |
Encryption |
✔️ |
Not supported |
Replaced by Containerized Data Importer (CDI) in V2 |
Backup |
✔️ |
Not supported |
Replaced by Containerized Data Importer (CDI) in V2 |
Orphan Resource
| Feature | V1 | V2 | Support Notes |
|---|---|---|---|
Orphaned Replica Data Management |
✔️ |
✔️ |
- |
Orphaned Instance Management |
✔️ |
Not supported |
- |
Engine Live Upgrade
| Feature | V1 | V2 | Support Notes |
|---|---|---|---|
Engine Live Upgrade |
✔️ |
Not supported |
V2 volumes do not support live upgrades between SUSE Storage v1.12 patch releases and must be detached before upgrading. Support is planned when upgrading from a SUSE Storage v1.12 release to a SUSE Storage v1.13 release. |