func (d *Driver) CreateSnapshot(req Request) error {
d.mutex.Lock()
defer d.mutex.Unlock()
id := req.Name
volumeID, err := util.GetFieldFromOpts(OPT_VOLUME_NAME, req.Options)
if err != nil {
return err
}
volume := d.blankVolume(volumeID)
if err := util.ObjectLoad(volume); err != nil {
return err
}
if _, exists := volume.Snapshots[id]; exists {
return fmt.Errorf("Snapshot %v already exists for volume %v", id, volumeID)
}
snapFile := d.getSnapshotFilePath(id, volumeID)
if err := util.MkdirIfNotExists(filepath.Dir(snapFile)); err != nil {
return err
}
if err := util.CompressDir(volume.Path, snapFile); err != nil {
return err
}
volume.Snapshots[id] = Snapshot{
Name: id,
CreatedTime: util.Now(),
VolumeUUID: volumeID,
FilePath: snapFile,
}
return util.ObjectSave(volume)
}
func (d *Driver) ListSnapshot(opts map[string]string) (map[string]map[string]string, error) {
var (
volumeIDs []string
err error
)
d.mutex.RLock()
defer d.mutex.RUnlock()
snapshots := make(map[string]map[string]string)
specifiedVolumeID, _ := util.GetFieldFromOpts(OPT_VOLUME_NAME, opts)
if specifiedVolumeID != "" {
volumeIDs = []string{
specifiedVolumeID,
}
} else {
volumeIDs, err = d.listVolumeNames()
if err != nil {
return nil, err
}
}
for _, volumeID := range volumeIDs {
volume := d.blankVolume(volumeID)
if err := util.ObjectLoad(volume); err != nil {
return nil, err
}
for snapshotID := range volume.Snapshots {
snapshots[snapshotID], err = d.getSnapshotInfo(snapshotID, volumeID)
if err != nil {
return nil, err
}
}
}
return snapshots, nil
}
func (d *Driver) CreateSnapshot(req Request) error {
var err error
d.mutex.Lock()
defer d.mutex.Unlock()
id := req.Name
volumeID, err := util.GetFieldFromOpts(OPT_VOLUME_NAME, req.Options)
if err != nil {
return err
}
volume := d.blankVolume(volumeID)
if err := util.ObjectLoad(volume); err != nil {
return err
}
devID, err := d.allocateDevID()
if err != nil {
return err
}
snapshot, exists := volume.Snapshots[id]
if exists {
return generateError(logrus.Fields{
LOG_FIELD_VOLUME: volumeID,
LOG_FIELD_SNAPSHOT: id,
}, "Already has snapshot with name")
}
log.WithFields(logrus.Fields{
LOG_FIELD_REASON: LOG_REASON_START,
LOG_FIELD_EVENT: LOG_EVENT_CREATE,
LOG_FIELD_OBJECT: LOG_OBJECT_SNAPSHOT,
LOG_FIELD_SNAPSHOT: id,
LOG_FIELD_VOLUME: volumeID,
DM_LOG_FIELD_VOLUME_DEVID: volume.DevID,
DM_LOG_FIELD_SNAPSHOT_DEVID: devID,
}).Debugf("Creating snapshot")
err = devicemapper.CreateSnapDevice(d.ThinpoolDevice, devID, volumeID, volume.DevID)
if err != nil {
return err
}
log.Debugf("Created snapshot device")
snapshot = Snapshot{
Name: id,
CreatedTime: util.Now(),
DevID: devID,
Activated: false,
}
volume.Snapshots[id] = snapshot
if err := util.ObjectSave(volume); err != nil {
return err
}
return nil
}
func (d *Driver) DeleteSnapshot(req Request) error {
d.mutex.Lock()
defer d.mutex.Unlock()
volumeID, err := util.GetFieldFromOpts(OPT_VOLUME_NAME, req.Options)
if err != nil {
return err
}
return d.deleteSnapshot(req.Name, volumeID)
}
func (d *Driver) GetSnapshotInfo(req Request) (map[string]string, error) {
d.mutex.RLock()
defer d.mutex.RUnlock()
id := req.Name
volumeID, err := util.GetFieldFromOpts(OPT_VOLUME_NAME, req.Options)
if err != nil {
return nil, err
}
return d.getSnapshotInfo(id, volumeID)
}
func (d *Driver) CreateSnapshot(req Request) error {
d.mutex.Lock()
defer d.mutex.Unlock()
id := req.Name
volumeID, err := util.GetFieldFromOpts(OPT_VOLUME_NAME, req.Options)
if err != nil {
return err
}
volume := d.blankVolume(volumeID)
if err := util.ObjectLoad(volume); err != nil {
return err
}
snapshot, exists := volume.Snapshots[id]
if exists {
return generateError(logrus.Fields{
LOG_FIELD_VOLUME: volumeID,
LOG_FIELD_SNAPSHOT: id,
}, "Already has snapshot with uuid")
}
tags := map[string]string{
"ConvoyVolumeName": volumeID,
"ConvoySnapshotName": id,
}
request := &CreateSnapshotRequest{
VolumeID: volume.EBSID,
Description: fmt.Sprintf("Convoy snapshot"),
Tags: tags,
}
ebsSnapshotID, err := d.ebsService.CreateSnapshot(request)
if err != nil {
return err
}
log.Debugf("Creating snapshot %v(%v) of volume %v(%v)", id, ebsSnapshotID, volumeID, volume.EBSID)
snapshot = Snapshot{
Name: id,
VolumeName: volumeID,
EBSID: ebsSnapshotID,
}
volume.Snapshots[id] = snapshot
return util.ObjectSave(volume)
}
func (d *Driver) DeleteSnapshot(req Request) error {
d.mutex.Lock()
defer d.mutex.Unlock()
id := req.Name
volumeID, err := util.GetFieldFromOpts(OPT_VOLUME_NAME, req.Options)
if err != nil {
return err
}
snapshot, volume, err := d.getSnapshotAndVolume(id, volumeID)
if err != nil {
return err
}
log.Debugf("Removing reference of snapshot %v(%v) of volume %v(%v)", id, snapshot.EBSID, volumeID, volume.EBSID)
delete(volume.Snapshots, id)
return util.ObjectSave(volume)
}