BlockDeviceMapping
Describes a block device mapping.
Contents
- DeviceName
-
The device name exposed to the EC2 instance (for example,
/dev/sdh
orxvdh
). 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
orEbs
, 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
istrue
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 specifyEbs
.Type: Boolean
Required: No
- VirtualName
-
The name of the virtual device (for example,
ephemeral0
).You can specify either
VirtualName
orEbs
, 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: