BlockDeviceMapping - Amazon EC2 Auto Scaling

BlockDeviceMapping

Describes a block device mapping.

Contents

DeviceName

The device name exposed to the EC2 instance (for example, /dev/sdh or xvdh). For more information, see Device Naming on Linux Instances in the Amazon EC2 User Guide for Linux Instances.

Type: String

Length Constraints: Minimum length of 1. Maximum length of 255.

Pattern: [\u0020-\uD7FF\uE000-\uFFFD\uD800\uDC00-\uDBFF\uDFFF\r\n\t]*

Required: Yes

Ebs

Parameters used to automatically set up EBS volumes when an instance is launched.

You can specify either VirtualName or Ebs, but not both.

Type: Ebs object

Required: No

NoDevice

Setting this value to true suppresses the specified device included in the block device mapping of the AMI.

If NoDevice is true for the root device, instances might fail the EC2 health check. In that case, Amazon EC2 Auto Scaling launches replacement instances.

If you specify NoDevice, you cannot specify Ebs.

Type: Boolean

Required: No

VirtualName

The name of the virtual device (for example, ephemeral0).

You can specify either VirtualName or Ebs, but not both.

Type: String

Length Constraints: Minimum length of 1. Maximum length of 255.

Pattern: [\u0020-\uD7FF\uE000-\uFFFD\uD800\uDC00-\uDBFF\uDFFF\r\n\t]*

Required: No

See Also

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