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The rbdSnapshot and rbdVolume structs have many common attributes. In order to combine these into an rbdImage struct that implements shared functionality, having the same attribute for the ID makes things much easier. Signed-off-by: Niels de Vos <ndevos@redhat.com>
104 lines
3.2 KiB
Go
104 lines
3.2 KiB
Go
/*
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Copyright 2020 The Ceph-CSI Authors.
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Licensed under the Apache License, Version 2.0 (the "License");
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you may not use this file except in compliance with the License.
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You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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*/
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package rbd
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import (
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"context"
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"errors"
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"fmt"
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"github.com/ceph/ceph-csi/internal/util"
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)
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func createRBDClone(ctx context.Context, parentVol, cloneRbdVol *rbdVolume, snap *rbdSnapshot, cr *util.Credentials) error {
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// create snapshot
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err := parentVol.createSnapshot(ctx, snap)
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if err != nil {
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util.ErrorLog(ctx, "failed to create snapshot %s: %v", snap, err)
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return err
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}
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snap.RbdImageName = parentVol.RbdImageName
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// create clone image and delete snapshot
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err = cloneRbdVol.cloneRbdImageFromSnapshot(ctx, snap)
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if err != nil {
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util.ErrorLog(ctx, "failed to clone rbd image %s from snapshot %s: %v", cloneRbdVol.RbdImageName, snap.RbdSnapName, err)
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err = fmt.Errorf("failed to clone rbd image %s from snapshot %s: %w", cloneRbdVol.RbdImageName, snap.RbdSnapName, err)
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}
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errSnap := parentVol.deleteSnapshot(ctx, snap)
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if errSnap != nil {
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util.ErrorLog(ctx, "failed to delete snapshot: %v", errSnap)
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delErr := deleteImage(ctx, cloneRbdVol, cr)
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if delErr != nil {
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util.ErrorLog(ctx, "failed to delete rbd image: %s with error: %v", cloneRbdVol, delErr)
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}
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return err
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}
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err = cloneRbdVol.getImageInfo()
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if err != nil {
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util.ErrorLog(ctx, "failed to get rbd image: %s details with error: %v", cloneRbdVol, err)
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delErr := deleteImage(ctx, cloneRbdVol, cr)
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if delErr != nil {
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util.ErrorLog(ctx, "failed to delete rbd image: %s with error: %v", cloneRbdVol, delErr)
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}
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return err
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}
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return nil
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}
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func cleanUpSnapshot(ctx context.Context, parentVol *rbdVolume, rbdSnap *rbdSnapshot, rbdVol *rbdVolume, cr *util.Credentials) error {
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err := parentVol.deleteSnapshot(ctx, rbdSnap)
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if err != nil {
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if !errors.Is(err, ErrSnapNotFound) {
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util.ErrorLog(ctx, "failed to delete snapshot: %v", err)
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return err
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}
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}
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err = deleteImage(ctx, rbdVol, cr)
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if err != nil {
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if !errors.Is(err, ErrImageNotFound) {
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util.ErrorLog(ctx, "failed to delete rbd image: %s/%s with error: %v", rbdVol.Pool, rbdVol.VolName, err)
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return err
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}
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}
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return nil
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}
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func generateVolFromSnap(rbdSnap *rbdSnapshot) *rbdVolume {
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vol := new(rbdVolume)
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vol.ClusterID = rbdSnap.ClusterID
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vol.VolID = rbdSnap.VolID
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vol.Monitors = rbdSnap.Monitors
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vol.Pool = rbdSnap.Pool
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vol.JournalPool = rbdSnap.JournalPool
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vol.RadosNamespace = rbdSnap.RadosNamespace
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vol.RbdImageName = rbdSnap.RbdSnapName
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vol.ImageID = rbdSnap.ImageID
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return vol
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}
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func undoSnapshotCloning(ctx context.Context, parentVol *rbdVolume, rbdSnap *rbdSnapshot, cloneVol *rbdVolume, cr *util.Credentials) error {
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err := cleanUpSnapshot(ctx, parentVol, rbdSnap, cloneVol, cr)
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if err != nil {
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util.ErrorLog(ctx, "failed to clean up %s or %s: %v", cloneVol, rbdSnap, err)
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return err
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}
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err = undoSnapReservation(ctx, rbdSnap, cr)
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return err
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}
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