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cleanup: do not pass an empty snapshot to genSnapFromSnapID()

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Just like GenVolFromVolID() the genSnapFromSnapID() function can return
a snapshot. There is no need to allocated an empty snapshot and pass
that to the genSnapFromSnapID() function.

Signed-off-by: Niels de Vos <ndevos@ibm.com>
This commit is contained in:
Niels de Vos 2024-03-21 10:48:50 +01:00 committed by mergify[bot]
parent 063319f6e5
commit 18162c71bc
2 changed files with 29 additions and 27 deletions
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11
internal/rbd/controllerserver.go
View File

@ -638,7 +638,6 @@ func (cs *ControllerServer) createVolumeFromSnapshot(
rbdVol *rbdVolume,
snapshotID string,
) error {
rbdSnap := &rbdSnapshot{}
if acquired := cs.SnapshotLocks.TryAcquire(snapshotID); !acquired {
log.ErrorLog(ctx, util.SnapshotOperationAlreadyExistsFmt, snapshotID)
@ -646,7 +645,7 @@ func (cs *ControllerServer) createVolumeFromSnapshot(
}
defer cs.SnapshotLocks.Release(snapshotID)
err := genSnapFromSnapID(ctx, rbdSnap, snapshotID, cr, secrets)
rbdSnap, err := genSnapFromSnapID(ctx, snapshotID, cr, secrets)
if err != nil {
if errors.Is(err, util.ErrPoolNotFound) {
log.ErrorLog(ctx, "failed to get backend snapshot for %s: %v", snapshotID, err)
@ -789,8 +788,8 @@ func checkContentSource(
if snapshotID == "" {
return nil, nil, status.Errorf(codes.NotFound, "volume Snapshot ID cannot be empty")
}
rbdSnap := &rbdSnapshot{}
if err := genSnapFromSnapID(ctx, rbdSnap, snapshotID, cr, req.GetSecrets()); err != nil {
rbdSnap, err := genSnapFromSnapID(ctx, snapshotID, cr, req.GetSecrets())
if err != nil {
log.ErrorLog(ctx, "failed to get backend snapshot for %s: %v", snapshotID, err)
if !errors.Is(err, ErrSnapNotFound) {
return nil, nil, status.Error(codes.Internal, err.Error())
@ -1429,8 +1428,8 @@ func (cs *ControllerServer) DeleteSnapshot(
}
defer cs.OperationLocks.ReleaseDeleteLock(snapshotID)
rbdSnap := &rbdSnapshot{}
if err = genSnapFromSnapID(ctx, rbdSnap, snapshotID, cr, req.GetSecrets()); err != nil {
rbdSnap, err := genSnapFromSnapID(ctx, snapshotID, cr, req.GetSecrets())
if err != nil {
// if error is ErrPoolNotFound, the pool is already deleted we don't
// need to worry about deleting snapshot or omap data, return success
if errors.Is(err, util.ErrPoolNotFound) {

45
internal/rbd/rbd_util.go
View File

@ -949,54 +949,57 @@ func (ri *rbdImage) checkImageChainHasFeature(ctx context.Context, feature uint6
// genSnapFromSnapID generates a rbdSnapshot structure from the provided identifier, updating
// the structure with elements from on-disk snapshot metadata as well.
//
// NOTE: The returned rbdSnapshot can be non-nil in case of an error. That
// seems to be required for the DeleteSnapshot procedure, so that OMAP
// attributes can be cleaned-up.
func genSnapFromSnapID(
ctx context.Context,
rbdSnap *rbdSnapshot,
snapshotID string,
cr *util.Credentials,
secrets map[string]string,
) error {
) (*rbdSnapshot, error) {
var vi util.CSIIdentifier
rbdSnap.VolID = snapshotID
err := vi.DecomposeCSIID(rbdSnap.VolID)
err := vi.DecomposeCSIID(snapshotID)
if err != nil {
log.ErrorLog(ctx, "error decoding snapshot ID (%s) (%s)", err, rbdSnap.VolID)
log.ErrorLog(ctx, "error decoding snapshot ID (%s) (%s)", err, snapshotID)
return err
return nil, err
}
rbdSnap := &rbdSnapshot{}
rbdSnap.VolID = snapshotID
rbdSnap.ClusterID = vi.ClusterID
rbdSnap.Monitors, _, err = util.GetMonsAndClusterID(ctx, rbdSnap.ClusterID, false)
if err != nil {
log.ErrorLog(ctx, "failed getting mons (%s)", err)
return err
return nil, err
}
rbdSnap.Pool, err = util.GetPoolName(rbdSnap.Monitors, cr, vi.LocationID)
if err != nil {
return err
return nil, err
}
rbdSnap.JournalPool = rbdSnap.Pool
rbdSnap.RadosNamespace, err = util.GetRadosNamespace(util.CsiConfigFile, rbdSnap.ClusterID)
if err != nil {
return err
return nil, err
}
j, err := snapJournal.Connect(rbdSnap.Monitors, rbdSnap.RadosNamespace, cr)
if err != nil {
return err
return nil, err
}
defer j.Destroy()
imageAttributes, err := j.GetImageAttributes(
ctx, rbdSnap.Pool, vi.ObjectUUID, true)
if err != nil {
return err
return rbdSnap, err
}
rbdSnap.ImageID = imageAttributes.ImageID
rbdSnap.RequestName = imageAttributes.RequestName
@ -1009,42 +1012,42 @@ func genSnapFromSnapID(
rbdSnap.JournalPool, err = util.GetPoolName(rbdSnap.Monitors, cr, imageAttributes.JournalPoolID)
if err != nil {
// TODO: If pool is not found we may leak the image (as DeleteSnapshot will return success)
return err
return rbdSnap, err
}
}
err = rbdSnap.Connect(cr)
if err != nil {
return rbdSnap, fmt.Errorf("failed to connect to %q: %w",
rbdSnap, err)
}
defer func() {
if err != nil {
rbdSnap.Destroy()
}
}()
if err != nil {
return fmt.Errorf("failed to connect to %q: %w",
rbdSnap, err)
}
if imageAttributes.KmsID != "" && imageAttributes.EncryptionType == util.EncryptionTypeBlock {
err = rbdSnap.configureBlockEncryption(imageAttributes.KmsID, secrets)
if err != nil {
return fmt.Errorf("failed to configure block encryption for "+
return rbdSnap, fmt.Errorf("failed to configure block encryption for "+
"%q: %w", rbdSnap, err)
}
}
if imageAttributes.KmsID != "" && imageAttributes.EncryptionType == util.EncryptionTypeFile {
err = rbdSnap.configureFileEncryption(ctx, imageAttributes.KmsID, secrets)
if err != nil {
return fmt.Errorf("failed to configure file encryption for "+
return rbdSnap, fmt.Errorf("failed to configure file encryption for "+
"%q: %w", rbdSnap, err)
}
}
err = updateSnapshotDetails(rbdSnap)
if err != nil {
return fmt.Errorf("failed to update snapshot details for %q: %w", rbdSnap, err)
return rbdSnap, fmt.Errorf("failed to update snapshot details for %q: %w", rbdSnap, err)
}
return err
return rbdSnap, err
}
// updateSnapshotDetails will copy the details from the rbdVolume to the