Github user alexandrelimassantana commented on the pull request:
https://github.com/apache/cloudstack/pull/1410#issuecomment-199090954
Hello @ustcweizhou
I am curious to know if this segment is really necessary:
```Java
disk = new DiskTO(volumeTO, vol.getDeviceId(), vol.getPath(),
vol.getVolumeType());
} else {
disk = new DiskTO(volTO, vol.getDeviceId(), vol.getPath(),
vol.getVolumeType());
{
```
volumeTO and volTO are the same variable.. just with a different cast
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