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Amazon Elastic Compute Cloud
API Reference (API Version 2016-11-15)

DetachVolume

Detaches an EBS volume from an instance. Make sure to unmount any file systems on the device within your operating system before detaching the volume. Failure to do so can result in the volume becoming stuck in the busy state while detaching. If this happens, detachment can be delayed indefinitely until you unmount the volume, force detachment, reboot the instance, or all three. If an EBS volume is the root device of an instance, it can't be detached while the instance is running. To detach the root volume, stop the instance first.

When a volume with an AWS Marketplace product code is detached from an instance, the product code is no longer associated with the instance.

For more information, see Detaching an Amazon EBS Volume in the Amazon Elastic Compute Cloud User Guide.

Request Parameters

The following parameters are for this specific action. For more information about required and optional parameters that are common to all actions, see Common Query Parameters.

Device

The device name.

Type: String

Required: No

DryRun

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.

Type: Boolean

Required: No

Force

Forces detachment if the previous detachment attempt did not occur cleanly (for example, logging into an instance, unmounting the volume, and detaching normally). This option can lead to data loss or a corrupted file system. Use this option only as a last resort to detach a volume from a failed instance. The instance won't have an opportunity to flush file system caches or file system metadata. If you use this option, you must perform file system check and repair procedures.

Type: Boolean

Required: No

InstanceId

The ID of the instance.

Type: String

Required: No

VolumeId

The ID of the volume.

Type: String

Required: Yes

Response Elements

The following elements are returned by the service.

attachTime

The time stamp when the attachment initiated.

Type: Timestamp

deleteOnTermination

Indicates whether the EBS volume is deleted on instance termination.

Type: Boolean

device

The device name.

Type: String

instanceId

The ID of the instance.

Type: String

requestId

The ID of the request.

Type: String

status

The attachment state of the volume.

Type: String

Valid Values: attaching | attached | detaching | detached

volumeId

The ID of the volume.

Type: String

Errors

For information about the errors that are common to all actions, see Common Client Errors.

Example

Example

This example detaches volume vol-1234567890abcdef0.

Sample Request

https://ec2.amazonaws.com/?Action=DetachVolume
&VolumeId=vol-1234567890abcdef0
&AUTHPARAMS

Sample Response

<DetachVolumeResponse xmlns="http://ec2.amazonaws.com/doc/2016-11-15/">
   <requestId>59dbff89-35bd-4eac-99ed-be587EXAMPLE</requestId> 
   <volumeId>vol-1234567890abcdef0</volumeId>
   <instanceId>i-1234567890abcdef0</instanceId>
   <device>/dev/sdh</device>
   <status>detaching</status>
   <attachTime>YYYY-MM-DDTHH:MM:SS.000Z</attachTime>
</DetachVolumeResponse>

See Also

For more information about using this API in one of the language-specific AWS SDKs, see the following: