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rbd: set metadata on the snapshot

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Set snapshot-name/snapshot-namespace/snapshotcontent-name details
on RBD backend snapshot image as metadata on snapshot

Signed-off-by: Prasanna Kumar Kalever <prasanna.kalever@redhat.com>
This commit is contained in:
Prasanna Kumar Kalever 2022-03-02 14:42:22 +05:30 committed by mergify[bot]
parent 463990c999
commit 41fe2c7dda
3 changed files with 57 additions and 2 deletions
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25
internal/rbd/controllerserver.go
View File

@ -963,6 +963,7 @@ func (cs *ControllerServer) ValidateVolumeCapabilities(
}
// CreateSnapshot creates the snapshot in backend and stores metadata in store.
// nolint:cyclop // TODO: reduce complexity
func (cs *ControllerServer) CreateSnapshot(
ctx context.Context,
req *csi.CreateSnapshotRequest) (*csi.CreateSnapshotResponse, error) {
@ -1036,7 +1037,7 @@ func (cs *ControllerServer) CreateSnapshot(
return nil, status.Errorf(codes.Internal, err.Error())
}
if found {
return cloneFromSnapshot(ctx, rbdVol, rbdSnap, cr)
return cloneFromSnapshot(ctx, rbdVol, rbdSnap, cr, req.GetParameters())
}
err = flattenTemporaryClonedImages(ctx, rbdVol, cr)
@ -1062,6 +1063,16 @@ func (cs *ControllerServer) CreateSnapshot(
return nil, status.Error(codes.Internal, err.Error())
}
// Update the metadata on snapshot not on the original image
rbdVol.RbdImageName = rbdSnap.RbdSnapName
// Set snapshot-name/snapshot-namespace/snapshotcontent-name details
// on RBD backend image as metadata on create
err = rbdVol.setSnapshotMetadata(req.GetParameters())
if err != nil {
return nil, status.Error(codes.Internal, err.Error())
}
return &csi.CreateSnapshotResponse{
Snapshot: &csi.Snapshot{
SizeBytes: vol.VolSize,
@ -1079,7 +1090,8 @@ func cloneFromSnapshot(
ctx context.Context,
rbdVol *rbdVolume,
rbdSnap *rbdSnapshot,
cr *util.Credentials) (*csi.CreateSnapshotResponse, error) {
cr *util.Credentials,
parameters map[string]string) (*csi.CreateSnapshotResponse, error) {
vol := generateVolFromSnap(rbdSnap)
err := vol.Connect(cr)
if err != nil {
@ -1112,6 +1124,15 @@ func cloneFromSnapshot(
return nil, status.Errorf(codes.Internal, err.Error())
}
// Update snapshot-name/snapshot-namespace/snapshotcontent-name details on
// RBD backend image as metadata on restart of provisioner pod when image exist
if len(parameters) != 0 {
err = rbdVol.setSnapshotMetadata(parameters)
if err != nil {
return nil, status.Error(codes.Internal, err.Error())
}
}
return &csi.CreateSnapshotResponse{
Snapshot: &csi.Snapshot{
SizeBytes: rbdSnap.VolSize,

13
internal/rbd/rbd_util.go
View File

@ -1933,3 +1933,16 @@ func (rv *rbdVolume) setVolumeMetadata(parameters map[string]string) error {
return nil
}
// setSnapshotMetadata Set snapshot-name/snapshot-namespace/snapshotcontent-name metadata
// on RBD image.
func (rv *rbdVolume) setSnapshotMetadata(parameters map[string]string) error {
for k, v := range k8s.GetSnapshotMetadata(parameters) {
err := rv.SetMetadata(k, v)
if err != nil {
return fmt.Errorf("failed to set metadata key %q, value %q on image: %w", k, v, err)
}
}
return nil
}

21
internal/util/k8s/parameters.go
View File

@ -29,6 +29,11 @@ const (
pvcNameKey = "csi.storage.k8s.io/pvc/name"
pvcNamespaceKey = "csi.storage.k8s.io/pvc/namespace"
pvNameKey = "csi.storage.k8s.io/pv/name"
// snapshot metadata keys.
volSnapNameKey = "csi.storage.k8s.io/volumesnapshot/name"
volSnapNamespaceKey = "csi.storage.k8s.io/volumesnapshot/namespace"
volSnapContentNameKey = "csi.storage.k8s.io/volumesnapshotcontent/name"
)
// RemoveCSIPrefixedParameters removes parameters prefixed with csiParameterPrefix.
@ -79,3 +84,19 @@ func PrepareVolumeMetadata(pvcName, pvcNamespace, pvName string) map[string]stri
return newParam
}
// GetSnapshotMetadata filter parameters, only return
// snapshot-name/snapshot-namespace/snapshotcontent-name metadata.
func GetSnapshotMetadata(parameters map[string]string) map[string]string {
keys := []string{volSnapNameKey, volSnapNamespaceKey, volSnapContentNameKey}
newParam := map[string]string{}
for k, v := range parameters {
for _, key := range keys {
if strings.Contains(k, key) {
newParam[k] = v
}
}
}
return newParam
}