**To describe the modification status for a volume** The following ``describe-volumes-modifications`` example describes the volume modification status of the specified volume. :: aws ec2 describe-volumes-modifications \ --volume-ids vol-1234567890abcdef0 Output:: { "VolumeModification": { "TargetSize": 150, "TargetVolumeType": "io1", "ModificationState": "optimizing", "VolumeId": " vol-1234567890abcdef0", "TargetIops": 100, "StartTime": "2019-05-17T11:27:19.000Z", "Progress": 70, "OriginalVolumeType": "io1", "OriginalIops": 100, "OriginalSize": 100 } }