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cephfs: change createBackingVolume to accomodate clone operations

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adjust createBackingVolume() to create a subvolume from snapshot
or existing subvolume by taking restore or clone operation locks

Signed-off-by: Humble Chirammal <hchiramm@redhat.com>
This commit is contained in:
Humble Chirammal 2020-08-04 00:04:28 +05:30 committed by mergify[bot]
parent c968380134
commit 2bb0bbde7f
1 changed files with 36 additions and 6 deletions
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42
internal/cephfs/controllerserver.go
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@ -46,18 +46,48 @@ type ControllerServer struct {
}
// createBackingVolume creates the backing subvolume and on any error cleans up any created entities.
func (cs *ControllerServer) createBackingVolume(ctx context.Context, volOptions *volumeOptions, vID *volumeIdentifier, secret map[string]string) error {
cr, err := util.NewAdminCredentials(secret)
if err != nil {
return status.Error(codes.InvalidArgument, err.Error())
func (cs *ControllerServer) createBackingVolume(
ctx context.Context,
volOptions,
parentVolOpt *volumeOptions,
vID,
pvID *volumeIdentifier,
sID *snapshotIdentifier,
cr *util.Credentials) error {
var err error
if sID != nil {
if err = cs.OperationLocks.GetRestoreLock(sID.SnapshotID); err != nil {
klog.Error(util.Log(ctx, err.Error()))
return status.Error(codes.Aborted, err.Error())
}
defer cs.OperationLocks.ReleaseRestoreLock(sID.SnapshotID)
err = createCloneFromSnapshot(ctx, parentVolOpt, volOptions, vID, sID, cr)
if err != nil {
klog.Errorf(util.Log(ctx, "failed to create clone from snapshot %s: %v"), sID.FsSnapshotName, err)
return err
}
return err
}
if parentVolOpt != nil {
if err = cs.OperationLocks.GetCloneLock(pvID.VolumeID); err != nil {
klog.Error(util.Log(ctx, err.Error()))
return status.Error(codes.Aborted, err.Error())
}
defer cs.OperationLocks.ReleaseCloneLock(pvID.VolumeID)
err = createCloneFromSubvolume(ctx, volumeID(pvID.FsSubvolName), volumeID(vID.FsSubvolName), volOptions, parentVolOpt, cr)
if err != nil {
klog.Errorf(util.Log(ctx, "failed to create clone from subvolume %s: %v"), volumeID(pvID.FsSubvolName), err)
return err
}
return nil
}
defer cr.DeleteCredentials()
if err = createVolume(ctx, volOptions, cr, volumeID(vID.FsSubvolName), volOptions.Size); err != nil {
klog.Errorf(util.Log(ctx, "failed to create volume %s: %v"), volOptions.RequestName, err)
return status.Error(codes.Internal, err.Error())
}
return nil
}