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[ aws . ec2 ]



Reports the current modification status of EBS volumes.

Current-generation EBS volumes support modification of attributes including type, size, and (for io1 volumes) IOPS provisioning while either attached to or detached from an instance. Following an action from the API or the console to modify a volume, the status of the modification may be modifying , optimizing , completed , or failed . If a volume has never been modified, then certain elements of the returned VolumeModification objects are null.

You can also use CloudWatch Events to check the status of a modification to an EBS volume. For information about CloudWatch Events, see the Amazon CloudWatch Events User Guide . For more information, see Monitoring Volume Modifications" in the Amazon Elastic Compute Cloud User Guide .

See also: AWS API Documentation

See 'aws help' for descriptions of global parameters.

describe-volumes-modifications is a paginated operation. Multiple API calls may be issued in order to retrieve the entire data set of results. You can disable pagination by providing the --no-paginate argument. When using --output text and the --query argument on a paginated response, the --query argument must extract data from the results of the following query expressions: VolumesModifications


[--dry-run | --no-dry-run]
[--volume-ids <value>]
[--filters <value>]
[--cli-input-json <value>]
[--starting-token <value>]
[--page-size <value>]
[--max-items <value>]
[--generate-cli-skeleton <value>]


--dry-run | --no-dry-run (boolean)

Checks whether you have the required permissions for the action, without actually making the request, and provides an error response. If you have the required permissions, the error response is DryRunOperation . Otherwise, it is UnauthorizedOperation .

--volume-ids (list)

The IDs of the volumes for which in-progress modifications will be described.


"string" "string" ...

--filters (list)

The filters. Supported filters: volume-id | modification-state | target-size | target-iops | target-volume-type | original-size | original-iops | original-volume-type | start-time | originalMultiAttachEnabled | targetMultiAttachEnabled .

Shorthand Syntax:

Name=string,Values=string,string ...

JSON Syntax:

    "Name": "string",
    "Values": ["string", ...]

--cli-input-json (string) Performs service operation based on the JSON string provided. The JSON string follows the format provided by --generate-cli-skeleton. If other arguments are provided on the command line, the CLI values will override the JSON-provided values. It is not possible to pass arbitrary binary values using a JSON-provided value as the string will be taken literally.

--starting-token (string)

A token to specify where to start paginating. This is the NextToken from a previously truncated response.

For usage examples, see Pagination in the AWS Command Line Interface User Guide .

--page-size (integer)

The size of each page to get in the AWS service call. This does not affect the number of items returned in the command's output. Setting a smaller page size results in more calls to the AWS service, retrieving fewer items in each call. This can help prevent the AWS service calls from timing out.

For usage examples, see Pagination in the AWS Command Line Interface User Guide .

--max-items (integer)

The total number of items to return in the command's output. If the total number of items available is more than the value specified, a NextToken is provided in the command's output. To resume pagination, provide the NextToken value in the starting-token argument of a subsequent command. Do not use the NextToken response element directly outside of the AWS CLI.

For usage examples, see Pagination in the AWS Command Line Interface User Guide .

--generate-cli-skeleton (string) Prints a JSON skeleton to standard output without sending an API request. If provided with no value or the value input, prints a sample input JSON that can be used as an argument for --cli-input-json. If provided with the value output, it validates the command inputs and returns a sample output JSON for that command.

See 'aws help' for descriptions of global parameters.


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


    "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


VolumesModifications -> (list)

Information about the volume modifications.


Describes the modification status of an EBS volume.

If the volume has never been modified, some element values will be null.

VolumeId -> (string)

The ID of the volume.

ModificationState -> (string)

The current modification state. The modification state is null for unmodified volumes.

StatusMessage -> (string)

A status message about the modification progress or failure.

TargetSize -> (integer)

The target size of the volume, in GiB.

TargetIops -> (integer)

The target IOPS rate of the volume.

TargetVolumeType -> (string)

The target EBS volume type of the volume.

OriginalSize -> (integer)

The original size of the volume.

OriginalIops -> (integer)

The original IOPS rate of the volume.

OriginalVolumeType -> (string)

The original EBS volume type of the volume.

Progress -> (long)

The modification progress, from 0 to 100 percent complete.

StartTime -> (timestamp)

The modification start time.

EndTime -> (timestamp)

The modification completion or failure time.

NextToken -> (string)

Token for pagination, null if there are no more results