chore(bors): merge pull request #671

671: Cherry pick #669 r=Abhinandan-Purkait a=Abhinandan-Purkait

FIX: The error variant for multi replica snapshot clone/restore creation was the same as multi replica snapshot operations. Add a specific variant for the same.

Co-authored-by: Abhinandan Purkait <[email protected]>

Author: mayastor-bors

control-plane/agents/src/bin/core/volume/clone_operations.rs

@@ -101,7 +101,10 @@ impl CreateVolumeExeVal for SnapshotCloneOp<'_> {
         let new_volume = self.0.params();
         let snapshot = self.1.as_ref();
 
-        snafu::ensure!(new_volume.replicas == 1, errors::NReplSnapshotNotAllowed {});
+        snafu::ensure!(
+            new_volume.replicas == 1,
+            errors::NReplSnapshotCloneCreationNotAllowed {}
+        );
         snafu::ensure!(
             new_volume.allowed_nodes().is_empty()
                 || new_volume.allowed_nodes().len() >= new_volume.replicas as usize,
@@ -171,7 +174,7 @@ impl SnapshotCloneOp<'_> {
             None | Some([]) => Err(SvcError::NoHealthyReplicas {
                 id: new_volume.uuid_str(),
             }),
-            _ => Err(SvcError::NReplSnapshotNotAllowed {}),
+            _ => Err(SvcError::NReplSnapshotCloneCreationNotAllowed {}),
         }?;
 
         let mut pools = CloneVolumeSnapshot::builder_with_defaults(registry, new_volume, snapshot)
@@ -181,7 +184,7 @@ impl SnapshotCloneOp<'_> {
         let pool = match pools.pop() {
             Some(pool) if pools.is_empty() => Ok(pool),
             // todo: support more than 1 replica snapshots
-            Some(_) => Err(SvcError::NReplSnapshotNotAllowed {}),
+            Some(_) => Err(SvcError::NReplSnapshotCloneCreationNotAllowed {}),
             // todo: filtering should keep invalid pools/resources and tag them with a reason
             //   why they cannot be used!
             None => Err(SvcError::NoSnapshotPools {

control-plane/agents/src/common/errors.rs

@@ -298,6 +298,10 @@ pub enum SvcError {
     },
     #[snafu(display("Snapshots for multi-replica volumes are not allowed"))]
     NReplSnapshotNotAllowed {},
+    #[snafu(display(
+        "Cannot create a multi-replica volume from a snapshot of a single-replica volume"
+    ))]
+    NReplSnapshotCloneCreationNotAllowed {},
     #[snafu(display("Replica's {} snapshot was unexpectedly skipped", replica))]
     ReplicaSnapSkipped { replica: String },
     #[snafu(display("Replica's {} snapshot was unexpectedly not taken", replica))]
@@ -830,6 +834,12 @@ impl From<SvcError> for ReplyError {
                 source,
                 extra,
             },
+            SvcError::NReplSnapshotCloneCreationNotAllowed {} => ReplyError {
+                kind: ReplyErrorKind::InvalidArgument,
+                resource: ResourceKind::VolumeSnapshotClone,
+                source,
+                extra,
+            },
             SvcError::ReplicaSnapSkipped { .. } => ReplyError {
                 kind: ReplyErrorKind::Aborted,
                 resource: ResourceKind::VolumeSnapshot,