SDK for PHP 3.x

Client: Aws\EBS\EBSClient
Service ID: ebs
Version: 2019-11-02

This page describes the parameters and results for the operations of the Amazon Elastic Block Store (2019-11-02), and shows how to use the Aws\EBS\EBSClient object to call the described operations. This documentation is specific to the 2019-11-02 API version of the service.

Operation Summary

Each of the following operations can be created from a client using $client->getCommand('CommandName'), where "CommandName" is the name of one of the following operations. Note: a command is a value that encapsulates an operation and the parameters used to create an HTTP request.

You can also create and send a command immediately using the magic methods available on a client object: $client->commandName(/* parameters */). You can send the command asynchronously (returning a promise) by appending the word "Async" to the operation name: $client->commandNameAsync(/* parameters */).

CompleteSnapshot ( array $params = [] )
Seals and completes the snapshot after all of the required blocks of data have been written to it.
GetSnapshotBlock ( array $params = [] )
Returns the data in a block in an Amazon Elastic Block Store snapshot.
ListChangedBlocks ( array $params = [] )
Returns information about the blocks that are different between two Amazon Elastic Block Store snapshots of the same volume/snapshot lineage.
ListSnapshotBlocks ( array $params = [] )
Returns information about the blocks in an Amazon Elastic Block Store snapshot.
PutSnapshotBlock ( array $params = [] )
Writes a block of data to a snapshot.
StartSnapshot ( array $params = [] )
Creates a new Amazon EBS snapshot.

Paginators

Paginators handle automatically iterating over paginated API results. Paginators are associated with specific API operations, and they accept the parameters that the corresponding API operation accepts. You can get a paginator from a client class using getPaginator($paginatorName, $operationParameters). This client supports the following paginators:

ListChangedBlocks
ListSnapshotBlocks

Operations

CompleteSnapshot

$result = $client->completeSnapshot([/* ... */]);
$promise = $client->completeSnapshotAsync([/* ... */]);

Seals and completes the snapshot after all of the required blocks of data have been written to it. Completing the snapshot changes the status to completed. You cannot write new blocks to a snapshot after it has been completed.

You should always retry requests that receive server (5xx) error responses, and ThrottlingException and RequestThrottledException client error responses. For more information see Error retries in the Amazon Elastic Compute Cloud User Guide.

Parameter Syntax

$result = $client->completeSnapshot([
    'ChangedBlocksCount' => <integer>, // REQUIRED
    'Checksum' => '<string>',
    'ChecksumAggregationMethod' => 'LINEAR',
    'ChecksumAlgorithm' => 'SHA256',
    'SnapshotId' => '<string>', // REQUIRED
]);

Parameter Details

Members
ChangedBlocksCount
Required: Yes
Type: int

The number of blocks that were written to the snapshot.

Checksum
Type: string

An aggregated Base-64 SHA256 checksum based on the checksums of each written block.

To generate the aggregated checksum using the linear aggregation method, arrange the checksums for each written block in ascending order of their block index, concatenate them to form a single string, and then generate the checksum on the entire string using the SHA256 algorithm.

ChecksumAggregationMethod
Type: string

The aggregation method used to generate the checksum. Currently, the only supported aggregation method is LINEAR.

ChecksumAlgorithm
Type: string

The algorithm used to generate the checksum. Currently, the only supported algorithm is SHA256.

SnapshotId
Required: Yes
Type: string

The ID of the snapshot.

Result Syntax

[
    'Status' => 'completed|pending|error',
]

Result Details

Members
Status
Type: string

The status of the snapshot.

Errors

AccessDeniedException:

You do not have sufficient access to perform this action.

ValidationException:

The input fails to satisfy the constraints of the EBS direct APIs.

ResourceNotFoundException:

The specified resource does not exist.

RequestThrottledException:

The number of API requests has exceeded the maximum allowed API request throttling limit for the snapshot. For more information see Error retries.

ServiceQuotaExceededException:

Your current service quotas do not allow you to perform this action.

InternalServerException:

An internal error has occurred. For more information see Error retries.

GetSnapshotBlock

$result = $client->getSnapshotBlock([/* ... */]);
$promise = $client->getSnapshotBlockAsync([/* ... */]);

Returns the data in a block in an Amazon Elastic Block Store snapshot.

You should always retry requests that receive server (5xx) error responses, and ThrottlingException and RequestThrottledException client error responses. For more information see Error retries in the Amazon Elastic Compute Cloud User Guide.

Parameter Syntax

$result = $client->getSnapshotBlock([
    'BlockIndex' => <integer>, // REQUIRED
    'BlockToken' => '<string>', // REQUIRED
    'SnapshotId' => '<string>', // REQUIRED
]);

Parameter Details

Members
BlockIndex
Required: Yes
Type: int

The block index of the block in which to read the data. A block index is a logical index in units of 512 KiB blocks. To identify the block index, divide the logical offset of the data in the logical volume by the block size (logical offset of data/524288). The logical offset of the data must be 512 KiB aligned.

BlockToken
Required: Yes
Type: string

The block token of the block from which to get data. You can obtain the BlockToken by running the ListChangedBlocks or ListSnapshotBlocks operations.

SnapshotId
Required: Yes
Type: string

The ID of the snapshot containing the block from which to get data.

If the specified snapshot is encrypted, you must have permission to use the KMS key that was used to encrypt the snapshot. For more information, see Using encryption in the Amazon Elastic Compute Cloud User Guide.

Result Syntax

[
    'BlockData' => <string || resource || Psr\Http\Message\StreamInterface>,
    'Checksum' => '<string>',
    'ChecksumAlgorithm' => 'SHA256',
    'DataLength' => <integer>,
]

Result Details

Members
BlockData
Type: blob (string|resource|Psr\Http\Message\StreamInterface)

The data content of the block.

Checksum
Type: string

The checksum generated for the block, which is Base64 encoded.

ChecksumAlgorithm
Type: string

The algorithm used to generate the checksum for the block, such as SHA256.

DataLength
Type: int

The size of the data in the block.

Errors

AccessDeniedException:

You do not have sufficient access to perform this action.

ValidationException:

The input fails to satisfy the constraints of the EBS direct APIs.

ResourceNotFoundException:

The specified resource does not exist.

RequestThrottledException:

The number of API requests has exceeded the maximum allowed API request throttling limit for the snapshot. For more information see Error retries.

ServiceQuotaExceededException:

Your current service quotas do not allow you to perform this action.

InternalServerException:

An internal error has occurred. For more information see Error retries.

ListChangedBlocks

$result = $client->listChangedBlocks([/* ... */]);
$promise = $client->listChangedBlocksAsync([/* ... */]);

Returns information about the blocks that are different between two Amazon Elastic Block Store snapshots of the same volume/snapshot lineage.

You should always retry requests that receive server (5xx) error responses, and ThrottlingException and RequestThrottledException client error responses. For more information see Error retries in the Amazon Elastic Compute Cloud User Guide.

Parameter Syntax

$result = $client->listChangedBlocks([
    'FirstSnapshotId' => '<string>',
    'MaxResults' => <integer>,
    'NextToken' => '<string>',
    'SecondSnapshotId' => '<string>', // REQUIRED
    'StartingBlockIndex' => <integer>,
]);

Parameter Details

Members
FirstSnapshotId
Type: string

The ID of the first snapshot to use for the comparison.

The FirstSnapshotID parameter must be specified with a SecondSnapshotId parameter; otherwise, an error occurs.

MaxResults
Type: int

The maximum number of blocks to be returned by the request.

Even if additional blocks can be retrieved from the snapshot, the request can return less blocks than MaxResults or an empty array of blocks.

To retrieve the next set of blocks from the snapshot, make another request with the returned NextToken value. The value of NextToken is null when there are no more blocks to return.

NextToken
Type: string

The token to request the next page of results.

If you specify NextToken, then StartingBlockIndex is ignored.

SecondSnapshotId
Required: Yes
Type: string

The ID of the second snapshot to use for the comparison.

The SecondSnapshotId parameter must be specified with a FirstSnapshotID parameter; otherwise, an error occurs.

StartingBlockIndex
Type: int

The block index from which the comparison should start.

The list in the response will start from this block index or the next valid block index in the snapshots.

If you specify NextToken, then StartingBlockIndex is ignored.

Result Syntax

[
    'BlockSize' => <integer>,
    'ChangedBlocks' => [
        [
            'BlockIndex' => <integer>,
            'FirstBlockToken' => '<string>',
            'SecondBlockToken' => '<string>',
        ],
        // ...
    ],
    'ExpiryTime' => <DateTime>,
    'NextToken' => '<string>',
    'VolumeSize' => <integer>,
]

Result Details

Members
BlockSize
Type: int

The size of the blocks in the snapshot, in bytes.

ChangedBlocks
Type: Array of ChangedBlock structures

An array of objects containing information about the changed blocks.

ExpiryTime
Type: timestamp (string|DateTime or anything parsable by strtotime)

The time when the BlockToken expires.

NextToken
Type: string

The token to use to retrieve the next page of results. This value is null when there are no more results to return.

VolumeSize
Type: long (int|float)

The size of the volume in GB.

Errors

AccessDeniedException:

You do not have sufficient access to perform this action.

ValidationException:

The input fails to satisfy the constraints of the EBS direct APIs.

ResourceNotFoundException:

The specified resource does not exist.

RequestThrottledException:

The number of API requests has exceeded the maximum allowed API request throttling limit for the snapshot. For more information see Error retries.

ServiceQuotaExceededException:

Your current service quotas do not allow you to perform this action.

InternalServerException:

An internal error has occurred. For more information see Error retries.

ListSnapshotBlocks

$result = $client->listSnapshotBlocks([/* ... */]);
$promise = $client->listSnapshotBlocksAsync([/* ... */]);

Returns information about the blocks in an Amazon Elastic Block Store snapshot.

You should always retry requests that receive server (5xx) error responses, and ThrottlingException and RequestThrottledException client error responses. For more information see Error retries in the Amazon Elastic Compute Cloud User Guide.

Parameter Syntax

$result = $client->listSnapshotBlocks([
    'MaxResults' => <integer>,
    'NextToken' => '<string>',
    'SnapshotId' => '<string>', // REQUIRED
    'StartingBlockIndex' => <integer>,
]);

Parameter Details

Members
MaxResults
Type: int

The maximum number of blocks to be returned by the request.

Even if additional blocks can be retrieved from the snapshot, the request can return less blocks than MaxResults or an empty array of blocks.

To retrieve the next set of blocks from the snapshot, make another request with the returned NextToken value. The value of NextToken is null when there are no more blocks to return.

NextToken
Type: string

The token to request the next page of results.

If you specify NextToken, then StartingBlockIndex is ignored.

SnapshotId
Required: Yes
Type: string

The ID of the snapshot from which to get block indexes and block tokens.

StartingBlockIndex
Type: int

The block index from which the list should start. The list in the response will start from this block index or the next valid block index in the snapshot.

If you specify NextToken, then StartingBlockIndex is ignored.

Result Syntax

[
    'BlockSize' => <integer>,
    'Blocks' => [
        [
            'BlockIndex' => <integer>,
            'BlockToken' => '<string>',
        ],
        // ...
    ],
    'ExpiryTime' => <DateTime>,
    'NextToken' => '<string>',
    'VolumeSize' => <integer>,
]

Result Details

Members
BlockSize
Type: int

The size of the blocks in the snapshot, in bytes.

Blocks
Type: Array of Block structures

An array of objects containing information about the blocks.

ExpiryTime
Type: timestamp (string|DateTime or anything parsable by strtotime)

The time when the BlockToken expires.

NextToken
Type: string

The token to use to retrieve the next page of results. This value is null when there are no more results to return.

VolumeSize
Type: long (int|float)

The size of the volume in GB.

Errors

AccessDeniedException:

You do not have sufficient access to perform this action.

ValidationException:

The input fails to satisfy the constraints of the EBS direct APIs.

ResourceNotFoundException:

The specified resource does not exist.

RequestThrottledException:

The number of API requests has exceeded the maximum allowed API request throttling limit for the snapshot. For more information see Error retries.

ServiceQuotaExceededException:

Your current service quotas do not allow you to perform this action.

InternalServerException:

An internal error has occurred. For more information see Error retries.

PutSnapshotBlock

$result = $client->putSnapshotBlock([/* ... */]);
$promise = $client->putSnapshotBlockAsync([/* ... */]);

Writes a block of data to a snapshot. If the specified block contains data, the existing data is overwritten. The target snapshot must be in the pending state.

Data written to a snapshot must be aligned with 512-KiB sectors.

You should always retry requests that receive server (5xx) error responses, and ThrottlingException and RequestThrottledException client error responses. For more information see Error retries in the Amazon Elastic Compute Cloud User Guide.

Parameter Syntax

$result = $client->putSnapshotBlock([
    'BlockData' => <string || resource || Psr\Http\Message\StreamInterface>, // REQUIRED
    'BlockIndex' => <integer>, // REQUIRED
    'Checksum' => '<string>', // REQUIRED
    'ChecksumAlgorithm' => 'SHA256', // REQUIRED
    'DataLength' => <integer>, // REQUIRED
    'Progress' => <integer>,
    'SnapshotId' => '<string>', // REQUIRED
]);

Parameter Details

Members
BlockData
Required: Yes
Type: blob (string|resource|Psr\Http\Message\StreamInterface)

The data to write to the block.

The block data is not signed as part of the Signature Version 4 signing process. As a result, you must generate and provide a Base64-encoded SHA256 checksum for the block data using the x-amz-Checksum header. Also, you must specify the checksum algorithm using the x-amz-Checksum-Algorithm header. The checksum that you provide is part of the Signature Version 4 signing process. It is validated against a checksum generated by Amazon EBS to ensure the validity and authenticity of the data. If the checksums do not correspond, the request fails. For more information, see Using checksums with the EBS direct APIs in the Amazon Elastic Compute Cloud User Guide.

BlockIndex
Required: Yes
Type: int

The block index of the block in which to write the data. A block index is a logical index in units of 512 KiB blocks. To identify the block index, divide the logical offset of the data in the logical volume by the block size (logical offset of data/524288). The logical offset of the data must be 512 KiB aligned.

Checksum
Required: Yes
Type: string

A Base64-encoded SHA256 checksum of the data. Only SHA256 checksums are supported.

ChecksumAlgorithm
Required: Yes
Type: string

The algorithm used to generate the checksum. Currently, the only supported algorithm is SHA256.

DataLength
Required: Yes
Type: int

The size of the data to write to the block, in bytes. Currently, the only supported size is 524288 bytes.

Valid values: 524288

Progress
Type: int

The progress of the write process, as a percentage.

SnapshotId
Required: Yes
Type: string

The ID of the snapshot.

If the specified snapshot is encrypted, you must have permission to use the KMS key that was used to encrypt the snapshot. For more information, see Using encryption in the Amazon Elastic Compute Cloud User Guide..

Result Syntax

[
    'Checksum' => '<string>',
    'ChecksumAlgorithm' => 'SHA256',
]

Result Details

Members
Checksum
Type: string

The SHA256 checksum generated for the block data by Amazon EBS.

ChecksumAlgorithm
Type: string

The algorithm used by Amazon EBS to generate the checksum.

Errors

AccessDeniedException:

You do not have sufficient access to perform this action.

ValidationException:

The input fails to satisfy the constraints of the EBS direct APIs.

ResourceNotFoundException:

The specified resource does not exist.

RequestThrottledException:

The number of API requests has exceeded the maximum allowed API request throttling limit for the snapshot. For more information see Error retries.

ServiceQuotaExceededException:

Your current service quotas do not allow you to perform this action.

InternalServerException:

An internal error has occurred. For more information see Error retries.

StartSnapshot

$result = $client->startSnapshot([/* ... */]);
$promise = $client->startSnapshotAsync([/* ... */]);

Creates a new Amazon EBS snapshot. The new snapshot enters the pending state after the request completes.

After creating the snapshot, use PutSnapshotBlock to write blocks of data to the snapshot.

You should always retry requests that receive server (5xx) error responses, and ThrottlingException and RequestThrottledException client error responses. For more information see Error retries in the Amazon Elastic Compute Cloud User Guide.

Parameter Syntax

$result = $client->startSnapshot([
    'ClientToken' => '<string>',
    'Description' => '<string>',
    'Encrypted' => true || false,
    'KmsKeyArn' => '<string>',
    'ParentSnapshotId' => '<string>',
    'Tags' => [
        [
            'Key' => '<string>',
            'Value' => '<string>',
        ],
        // ...
    ],
    'Timeout' => <integer>,
    'VolumeSize' => <integer>, // REQUIRED
]);

Parameter Details

Members
ClientToken
Type: string

A unique, case-sensitive identifier that you provide to ensure the idempotency of the request. Idempotency ensures that an API request completes only once. With an idempotent request, if the original request completes successfully. The subsequent retries with the same client token return the result from the original successful request and they have no additional effect.

If you do not specify a client token, one is automatically generated by the Amazon Web Services SDK.

For more information, see Idempotency for StartSnapshot API in the Amazon Elastic Compute Cloud User Guide.

Description
Type: string

A description for the snapshot.

Encrypted
Type: boolean

Indicates whether to encrypt the snapshot.

You can't specify Encrypted and ParentSnapshotId in the same request. If you specify both parameters, the request fails with ValidationException.

The encryption status of the snapshot depends on the values that you specify for Encrypted, KmsKeyArn, and ParentSnapshotId, and whether your Amazon Web Services account is enabled for encryption by default. For more information, see Using encryption in the Amazon Elastic Compute Cloud User Guide.

To create an encrypted snapshot, you must have permission to use the KMS key. For more information, see Permissions to use Key Management Service keys in the Amazon Elastic Compute Cloud User Guide.

KmsKeyArn
Type: string

The Amazon Resource Name (ARN) of the Key Management Service (KMS) key to be used to encrypt the snapshot.

The encryption status of the snapshot depends on the values that you specify for Encrypted, KmsKeyArn, and ParentSnapshotId, and whether your Amazon Web Services account is enabled for encryption by default. For more information, see Using encryption in the Amazon Elastic Compute Cloud User Guide.

To create an encrypted snapshot, you must have permission to use the KMS key. For more information, see Permissions to use Key Management Service keys in the Amazon Elastic Compute Cloud User Guide.

ParentSnapshotId
Type: string

The ID of the parent snapshot. If there is no parent snapshot, or if you are creating the first snapshot for an on-premises volume, omit this parameter.

You can't specify ParentSnapshotId and Encrypted in the same request. If you specify both parameters, the request fails with ValidationException.

The encryption status of the snapshot depends on the values that you specify for Encrypted, KmsKeyArn, and ParentSnapshotId, and whether your Amazon Web Services account is enabled for encryption by default. For more information, see Using encryption in the Amazon Elastic Compute Cloud User Guide.

If you specify an encrypted parent snapshot, you must have permission to use the KMS key that was used to encrypt the parent snapshot. For more information, see Permissions to use Key Management Service keys in the Amazon Elastic Compute Cloud User Guide.

Tags
Type: Array of Tag structures

The tags to apply to the snapshot.

Timeout
Type: int

The amount of time (in minutes) after which the snapshot is automatically cancelled if:

  • No blocks are written to the snapshot.

  • The snapshot is not completed after writing the last block of data.

If no value is specified, the timeout defaults to 60 minutes.

VolumeSize
Required: Yes
Type: long (int|float)

The size of the volume, in GiB. The maximum size is 65536 GiB (64 TiB).

Result Syntax

[
    'BlockSize' => <integer>,
    'Description' => '<string>',
    'KmsKeyArn' => '<string>',
    'OwnerId' => '<string>',
    'ParentSnapshotId' => '<string>',
    'SnapshotId' => '<string>',
    'SseType' => 'sse-ebs|sse-kms|none',
    'StartTime' => <DateTime>,
    'Status' => 'completed|pending|error',
    'Tags' => [
        [
            'Key' => '<string>',
            'Value' => '<string>',
        ],
        // ...
    ],
    'VolumeSize' => <integer>,
]

Result Details

Members
BlockSize
Type: int

The size of the blocks in the snapshot, in bytes.

Description
Type: string

The description of the snapshot.

KmsKeyArn
Type: string

The Amazon Resource Name (ARN) of the Key Management Service (KMS) key used to encrypt the snapshot.

OwnerId
Type: string

The Amazon Web Services account ID of the snapshot owner.

ParentSnapshotId
Type: string

The ID of the parent snapshot.

SnapshotId
Type: string

The ID of the snapshot.

SseType
Type: string

Reserved for future use.

StartTime
Type: timestamp (string|DateTime or anything parsable by strtotime)

The timestamp when the snapshot was created.

Status
Type: string

The status of the snapshot.

Tags
Type: Array of Tag structures

The tags applied to the snapshot. You can specify up to 50 tags per snapshot. For more information, see Tagging your Amazon EC2 resources in the Amazon Elastic Compute Cloud User Guide.

VolumeSize
Type: long (int|float)

The size of the volume, in GiB.

Errors

AccessDeniedException:

You do not have sufficient access to perform this action.

ValidationException:

The input fails to satisfy the constraints of the EBS direct APIs.

RequestThrottledException:

The number of API requests has exceeded the maximum allowed API request throttling limit for the snapshot. For more information see Error retries.

ResourceNotFoundException:

The specified resource does not exist.

ServiceQuotaExceededException:

Your current service quotas do not allow you to perform this action.

InternalServerException:

An internal error has occurred. For more information see Error retries.

ConcurrentLimitExceededException:

You have reached the limit for concurrent API requests. For more information, see Optimizing performance of the EBS direct APIs in the Amazon Elastic Compute Cloud User Guide.

ConflictException:

The request uses the same client token as a previous, but non-identical request.

Shapes

AccessDeniedException

Description

You do not have sufficient access to perform this action.

Members
Message
Type: string
Reason
Required: Yes
Type: string

The reason for the exception.

Block

Description

A block of data in an Amazon Elastic Block Store snapshot.

Members
BlockIndex
Type: int

The block index.

BlockToken
Type: string

The block token for the block index.

ChangedBlock

Description

A block of data in an Amazon Elastic Block Store snapshot that is different from another snapshot of the same volume/snapshot lineage.

Members
BlockIndex
Type: int

The block index.

FirstBlockToken
Type: string

The block token for the block index of the FirstSnapshotId specified in the ListChangedBlocks operation. This value is absent if the first snapshot does not have the changed block that is on the second snapshot.

SecondBlockToken
Type: string

The block token for the block index of the SecondSnapshotId specified in the ListChangedBlocks operation.

ConcurrentLimitExceededException

Description

You have reached the limit for concurrent API requests. For more information, see Optimizing performance of the EBS direct APIs in the Amazon Elastic Compute Cloud User Guide.

Members
Message
Type: string

ConflictException

Description

The request uses the same client token as a previous, but non-identical request.

Members
Message
Type: string

InternalServerException

Description

An internal error has occurred. For more information see Error retries.

Members
Message
Type: string

RequestThrottledException

Description

The number of API requests has exceeded the maximum allowed API request throttling limit for the snapshot. For more information see Error retries.

Members
Message
Type: string
Reason
Type: string

The reason for the exception.

ResourceNotFoundException

Description

The specified resource does not exist.

Members
Message
Type: string
Reason
Type: string

The reason for the exception.

ServiceQuotaExceededException

Description

Your current service quotas do not allow you to perform this action.

Members
Message
Type: string
Reason
Type: string

The reason for the exception.

Tag

Description

Describes a tag.

Members
Key
Type: string

The key of the tag.

Value
Type: string

The value of the tag.

ValidationException

Description

The input fails to satisfy the constraints of the EBS direct APIs.

Members
Message
Type: string
Reason
Type: string

The reason for the validation exception.