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ceph-csi/internal/rbd/snapshot.go
Niels de Vos 6d00b39886 cleanup: move log functions to new internal/util/log package
Moving the log functions into its own internal/util/log package makes it
possible to split out the humongous internal/util packages in further
smaller pieces. This reduces the inter-dependencies between utility
functions and components, preventing circular dependencies which are not
allowed in Go.

Updates: 
Signed-off-by: Niels de Vos <ndevos@redhat.com>
2021-08-26 09:34:05 +00:00

146 lines
3.7 KiB
Go

/*
Copyright 2020 The Ceph-CSI Authors.
Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at
http://www.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.
*/
package rbd
import (
"context"
"errors"
"fmt"
"github.com/ceph/ceph-csi/internal/util"
"github.com/ceph/ceph-csi/internal/util/log"
)
func createRBDClone(
ctx context.Context,
parentVol, cloneRbdVol *rbdVolume,
snap *rbdSnapshot,
cr *util.Credentials) error {
// create snapshot
err := parentVol.createSnapshot(ctx, snap)
if err != nil {
log.ErrorLog(ctx, "failed to create snapshot %s: %v", snap, err)
return err
}
snap.RbdImageName = parentVol.RbdImageName
// create clone image and delete snapshot
err = cloneRbdVol.cloneRbdImageFromSnapshot(ctx, snap, parentVol)
if err != nil {
log.ErrorLog(
ctx,
"failed to clone rbd image %s from snapshot %s: %v",
cloneRbdVol.RbdImageName,
snap.RbdSnapName,
err)
err = fmt.Errorf(
"failed to clone rbd image %s from snapshot %s: %w",
cloneRbdVol.RbdImageName,
snap.RbdSnapName,
err)
}
errSnap := parentVol.deleteSnapshot(ctx, snap)
if errSnap != nil {
log.ErrorLog(ctx, "failed to delete snapshot: %v", errSnap)
delErr := deleteImage(ctx, cloneRbdVol, cr)
if delErr != nil {
log.ErrorLog(ctx, "failed to delete rbd image: %s with error: %v", cloneRbdVol, delErr)
}
return err
}
err = cloneRbdVol.getImageInfo()
if err != nil {
log.ErrorLog(ctx, "failed to get rbd image: %s details with error: %v", cloneRbdVol, err)
delErr := deleteImage(ctx, cloneRbdVol, cr)
if delErr != nil {
log.ErrorLog(ctx, "failed to delete rbd image: %s with error: %v", cloneRbdVol, delErr)
}
return err
}
return nil
}
// cleanUpSnapshot removes the RBD-snapshot (rbdSnap) from the RBD-image
// (parentVol) and deletes the RBD-image rbdVol.
func cleanUpSnapshot(
ctx context.Context,
parentVol *rbdVolume,
rbdSnap *rbdSnapshot,
rbdVol *rbdVolume,
cr *util.Credentials) error {
err := parentVol.deleteSnapshot(ctx, rbdSnap)
if err != nil {
if !errors.Is(err, ErrSnapNotFound) {
log.ErrorLog(ctx, "failed to delete snapshot %q: %v", rbdSnap, err)
return err
}
}
if rbdVol != nil {
err := deleteImage(ctx, rbdVol, cr)
if err != nil {
if !errors.Is(err, ErrImageNotFound) {
log.ErrorLog(ctx, "failed to delete rbd image %q with error: %v", rbdVol, err)
return err
}
}
}
return nil
}
func generateVolFromSnap(rbdSnap *rbdSnapshot) *rbdVolume {
vol := new(rbdVolume)
vol.ClusterID = rbdSnap.ClusterID
vol.VolID = rbdSnap.VolID
vol.Monitors = rbdSnap.Monitors
vol.Pool = rbdSnap.Pool
vol.JournalPool = rbdSnap.JournalPool
vol.RadosNamespace = rbdSnap.RadosNamespace
vol.RbdImageName = rbdSnap.RbdSnapName
vol.ImageID = rbdSnap.ImageID
// copyEncryptionConfig cannot be used here because the volume and the
// snapshot will have the same volumeID which cases the panic in
// copyEncryptionConfig function.
vol.encryption = rbdSnap.encryption
return vol
}
func undoSnapshotCloning(
ctx context.Context,
parentVol *rbdVolume,
rbdSnap *rbdSnapshot,
cloneVol *rbdVolume,
cr *util.Credentials) error {
err := cleanUpSnapshot(ctx, parentVol, rbdSnap, cloneVol, cr)
if err != nil {
log.ErrorLog(ctx, "failed to clean up %s or %s: %v", cloneVol, rbdSnap, err)
return err
}
err = undoSnapReservation(ctx, rbdSnap, cr)
return err
}