mirror of
https://github.com/ceph/ceph-csi.git
synced 2024-11-23 06:40:23 +00:00
137 lines
3.4 KiB
Go
137 lines
3.4 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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"github.com/ceph/ceph-csi/internal/util/log"
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)
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func createRBDClone(
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ctx context.Context,
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parentVol, cloneRbdVol *rbdVolume,
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snap *rbdSnapshot,
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) 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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log.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, parentVol)
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if err != nil {
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log.ErrorLog(
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ctx,
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"failed to clone rbd image %s from snapshot %s: %v",
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cloneRbdVol.RbdImageName,
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snap.RbdSnapName,
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err)
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err = fmt.Errorf(
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"failed to clone rbd image %s from snapshot %s: %w",
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cloneRbdVol.RbdImageName,
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snap.RbdSnapName,
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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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log.ErrorLog(ctx, "failed to delete snapshot: %v", errSnap)
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delErr := cloneRbdVol.deleteImage(ctx)
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if delErr != nil {
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log.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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// cleanUpSnapshot removes the RBD-snapshot (rbdSnap) from the RBD-image
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// (parentVol) and deletes the RBD-image rbdVol.
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func cleanUpSnapshot(
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ctx context.Context,
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parentVol *rbdVolume,
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rbdSnap *rbdSnapshot,
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rbdVol *rbdVolume,
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) 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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log.ErrorLog(ctx, "failed to delete snapshot %q: %v", rbdSnap, err)
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return err
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}
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}
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if rbdVol != nil {
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err := rbdVol.deleteImage(ctx)
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if err != nil {
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if !errors.Is(err, ErrImageNotFound) {
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log.ErrorLog(ctx, "failed to delete rbd image %q with error: %v", rbdVol, err)
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return err
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}
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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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// copyEncryptionConfig cannot be used here because the volume and the
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// snapshot will have the same volumeID which cases the panic in
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// copyEncryptionConfig function.
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vol.blockEncryption = rbdSnap.blockEncryption
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vol.fileEncryption = rbdSnap.fileEncryption
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return vol
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}
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func undoSnapshotCloning(
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ctx context.Context,
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parentVol *rbdVolume,
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rbdSnap *rbdSnapshot,
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cloneVol *rbdVolume,
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cr *util.Credentials,
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) error {
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err := cleanUpSnapshot(ctx, parentVol, rbdSnap, cloneVol)
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if err != nil {
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log.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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