Impossible to create VM with root volume from snapshot

[outscale-kke25]

Terraform Version

Terraform v1.9.8
on darwin_arm64

Terraform Configuration

data "outscale_snapshots" "root" {
filter {
name = "tag_keys"
values = ["Name"]
}
filter {
name = "tag_keys"
values = ["VolumeType"]
}
filter {
name = "tag_values"
values = ["root"]
}
}

data "outscale_snapshots" "app" {
filter {
name = "tag_keys"
values = ["Name"]
}
filter {
name = "tag_keys"
values = ["VolumeType"]
}
filter {
name = "tag_values"
values = ["application"]
}
}

locals {
snapshots_by_vm = {
for vm in var.vms : vm.vm_name => {
root = reverse([
for s in data.outscale_snapshots.root.snapshots :
s.snapshot_id
if lookup({ for t in s.tags : t.key => t.value }, "Name", "") == vm.vm_name
])
app = reverse([
for s in data.outscale_snapshots.app.snapshots :
s.snapshot_id
if lookup({ for t in s.tags : t.key => t.value }, "Name", "") == vm.vm_name
])
}
}
}

resource "outscale_vm" "vm-001" {
for_each = { for vm in var.vms : vm.vm_name => vm }

image_id = each.value.image_id
vm_type = each.value.vm_type
private_ips = each.value.private_ip
keypair_name = each.value.keypair_name
subnet_id = each.value.subnet_id
security_group_ids = [each.value.sg_id]
dynamic "block_device_mappings" {
for_each = try(each.value.block_devices, [])
content {
device_name = block_device_mappings.value.device_name
bsu {
snapshot_id = var.env == "pra" ? (
block_device_mappings.value.device_name != "/dev/sda1"
? try(lookup(local.snapshots_by_vm, each.key, { root = [], app = [] }).root[0], null)
: try(lookup(local.snapshots_by_vm, each.key, { root = [], app = [] }).app[0], null)
) : null

    volume_size           = try(block_device_mappings.value.volume_size, null)
    volume_type           = block_device_mappings.value.volume_type
    iops                  = lookup(block_device_mappings.value, "iops", null)
    delete_on_vm_deletion = lookup(block_device_mappings.value, "delete_on_vm_deletion", null)

    dynamic "tags" {
      for_each = block_device_mappings.value.tags == null ? {} : block_device_mappings.value.tags
      content {
        key   = tags.key
        value = tags.value
      }
    }
  }
}

}

dynamic "tags" {
for_each = try(each.value.tags, {})
content {
key = tags.key
value = tags.value
}
}
}

Debug Output (optional)

No response

Crash Output (if applicable)

No response

Expected Behavior

i expected that terraform will create à VM with 2 disks (root+data) from snapshots

Actual Behavior

Error 8016

│ Error: error launching source VM: 400 Bad Request: {"Errors":[{"Type":"OperationNotSupported","Details":"","Code":"8016"}],"ResponseContext":{"RequestId":"86bb0487-085d-439a-8b0c-ffbdfc371a23"}}
│
│ with outscale_vm.vm-001["pgtrust01.mid.prod.dc03.ce"],
│ on main.tf line 48, in resource "outscale_vm" "vm-001":
│ 48: resource "outscale_vm" "vm-001" {

Steps to Reproduce

terraform init
terraform plan
terraform apply

Additional Context

I have tested with OAPI-CLI (osc-cli) and this operation was succeded

References

No response

[ryohkhn]

Hello @outscale-kke25,

Unfortunately, the API doesn’t currently support creating a root volume from a snapshot during VM creation.

However, this can be achieved using the API and Terraform with the following approach:
Create VM with default root -> Unlink root Volume -> Create Volume -> Link Volume