EVS.SharedVolume

Element Description

The EVS.SharedVolume element can be used to deploy shared EVS disks at the IaaS layer. Shared EVS disks are block storage devices that can be attached to multiple ECSs and support concurrent read/write operations. These disks feature multiple attachments, high-concurrency, high-performance, and high-reliability.

Element Properties

**Table 1** Property Description
Property	Required	Descripiton
availabilityZone	Yes	AZ Type: HuaweiCloud.ECS.AvailabilityZone.Name Value Constraint: The value must be selected as required. If the value of backupId is not empty, the AZ must be the same as the AZ where the backup is located. Suggestion: 1. Use the get_input function to import this field. The value can be automatically selected on the AOS page. 2. For details about the AZ of each region.
description	No	EVS disk description Type: string Value Description: Supports customization.
volumeType	Yes	EVS disk type Type: HuaweiCloud.EVS.Volume.Type.Name Value Description: Supports SSD, SAS, and SATA. During EVS disk creation from a snapshot, the value of the volumeType field must be the same as that of the source EVS disk. Suggestion: Set the value based on specifications and requirements.For more information on different disk types, see https://support.huaweicloud.com/eu/productdesc-evs/en-us_topic_0014580744.html.
name	No	EVS disk name Type: string Value Description: Supports customization, for example, share. Value Constraint: The following requirement must be met: {"regex":"^[a-zA-Z][0-9a-zA-Z-_]$","min_length":1,"max_length":250}. Suggestion:* Customize the value.
passthrough	No	equipment type about the created EVS disk Type: string Value Description: false: indicates that EVS disks are VBD. true: indicates that disks are SCSI Value Constraint: The value must be true or false Suggestion: For details, see the EVS documentation at https://support.huaweicloud.com/eu/api-evs/evs_04_2013.html.
backupId	No	EVS disk backup ID Type: string Value Description: Indicates the existing backup ID of an EVS disk. The use of both "Snapshotid" and "backupid" fields is not supported. Value Constraint: The value must satisfy the UUID generation rule.
size	Yes	EVS disk size Type: integer Value Description: Indicates the EVS disk size (unit: GB). Default: 40 Suggestion: Set the value based on requirements.When you try to create an EVS disk from a backup disk, image, or snapshot, the size of the EVS disk cannot be smaller than that of the backup disk, image, or snapshot.
snapshotId	No	Snapshot ID of the EVS disk Type: string Value Description: Indicates the existing snapshot ID of an EVS disk. The use of both "Snapshotid" and "backupid" fields is not supported. Value Constraint: The value must satisfy the UUID generation rule.

Relationships Between Elements

None.

Return Value

Property	Type	Description
volume	Array	EVS disk information list
refName	string	EVS disk name
volumeIDs	string	Set of EVS disk IDs, which are separated by commas (,)

Blueprint Example

tosca_definitions_version: huaweicloud_tosca_version_1_0 
 inputs: 
   availabilityZone: 
     description: AZ 
   size: 
     description: EVS disk size 
     default: 10 
   volumeType: 
     description: EVS disk type
     default: SATA 
   name: 
     description: EVS disk name 
     default: my-evs 
 node_templates: 
   my-evs: 
     type: HuaweiCloud.EVS.SharedVolume 
     properties: 
       size: 
         get_input: size 
       availabilityZone: 
         get_input: availabilityZone 
       volumeType: 
         get_input: volumeType 
       name: 
         get_input: name 
 outputs: 
   evs-id: 
     description: ECS ID 
     value: 
       get_attribute: 
         - my-evs 
         - volumeIDs

Parent topic: List of Elements

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