3.25.0 breaks aws_ebs_volume with size": only one of size,snapshot_id can be specified

[dbgeek]

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Terraform CLI and Terraform AWS Provider Version

terraform -v
Terraform v0.14.5
+ provider registry.terraform.io/hashicorp/aws v3.25.0

Affected Resource(s)

• aws_ebs_volume

Terraform Configuration Files

terraform {
  required_providers {
    aws = {
      source  = "hashicorp/aws"
      version = "~> 3.0"
    }
  }
  required_version = ">= 0.14"
}

resource "aws_ebs_volume" "ebs_volume" {
  availability_zone = "eu-west-1a"
  size              = 16
  type              = "gp3"
  snapshot_id       = "snap-0fb629cbb0446b995"
  encrypted         = true
}
```

### Actual Behavior

```
Error: ExactlyOne

  on main.tf line 13, in resource "aws_ebs_volume" "ebs_volume":
  13:   size              = 16

"size": only one of `size,snapshot_id` can be specified, but
`size,snapshot_id` were specified.


Error: ExactlyOne

  on main.tf line 15, in resource "aws_ebs_volume" "ebs_volume":
  15:   snapshot_id       = "snap-0fb629cbb0446b995"

"snapshot_id": only one of `size,snapshot_id` can be specified, but
`size,snapshot_id` were specified.
```

### Steps to Reproduce

try to create EBS volume that specifies both size and snapshotid
main.tf 
```
resource "aws_ebs_volume" "ebs_volume" {
  availability_zone = "eu-west-1a"
  size              = 16
  type              = "gp3"
  snapshot_id       = "snap-0fb629cbb0446b995"
  encrypted         = true
}
```

1. `terraform plan`

### References

This change is what breaks it
https://github.com/hashicorp/terraform-provider-aws/blob/master/aws/resource_aws_ebs_volume.go#L68

AWS API supports both size & snapshot. Size should just be equal to or larger than snapshot size
https://docs.aws.amazon.com/AWSEC2/latest/APIReference/API_CreateVolume.html

ping @ewbankkit 

[ewbankkit]

@dbgeek Thanks for raising this issue.
Indeed, that does seem to be the case, which conflicts with the statement in the same paragraph 😭:

You must specify either a snapshot ID or a volume size.

Relates:

• EBS gp3 volume scalable throughput #16514
• aws_ebs_volume: gp3 volume scalable throughput #16517

[bflad]

The fix for this has been merged and will release with version 3.26.0 of the Terraform AWS Provider, on Thursday. 👍

[ghost]

This has been released in version 3.26.0 of the Terraform AWS provider. Please see the Terraform documentation on provider versioning or reach out if you need any assistance upgrading.

For further feature requests or bug reports with this functionality, please create a new GitHub issue following the template for triage. Thanks!

[ghost]

I'm going to lock this issue because it has been closed for 30 days ⏳. This helps our maintainers find and focus on the active issues.

If you feel this issue should be reopened, we encourage creating a new issue linking back to this one for added context. Thanks!