func runSnapshot(config config, tenant string, volume *cephdriver.CephVolume) {
now := time.Now()
log.Infof("Snapping volume \"%s/%s\" at %v", tenant, volume, now)
if err := volume.CreateSnapshot(now.String()); err != nil {
log.Errorf("Cannot snap volume: tenant %q, %q: %v", volume, err)
}
}
