Cloning VM with 15 disks fails - "Hard disk 15" too high (15) - maximum value is 14 with 1 SCSI controller(s

ravatheodor commented 10 months ago

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Terraform

v1.6.5

Terraform Provider

v2.6.1

VMware vSphere

v7.0.3

Description

In vSphere SCSI X:7 is reserved. A VM with more than 7 disks on a single controller will have disks assigned from 0:0 to 0:6 and from 0:8 to 0:15 (for SCSI controller 0). The maximum of 15 disks per SCSI controller is respected. vCenter Server Appliance has 15 disks on SCSI 0 controller. Terraform plan fails because of checking Hard disk number instead of counting the disks │ Error: disk.14: unit_number on disk "Hard disk 15" too high (15) - maximum value is 14 with 1 SCSI controller(s)

Affected Resources or Data Sources

resource vsphere_virtual_machine

### Terraform Configuration

###
### Variables
####

variable "datacenter" {
  type        = string
  description = "Virtual datacenter name"
}

variable "vsphere_cluster" {
  type        = string
  description = "vSphere cluster name"
}

variable "vsphere_host" {
  type        = string
  description = "vSphere host name"
}

variable "datastore" {
  type        = string
  description = "datastore for the lab VMs"
}

variable "lab_id" {
  type        = string
  description = "unique ID for the current lab"
}

variable "lab_folder" {
  type        = string
  description = "folder where to build"
}

variable "isolated_portgroup" {
  type        = string
  description = "isolated portgroup"
}

variable "lin_vm_map" {
  description = "map of Linux VMs"
  type = list(object({
    template_name = string
    vm_name       = string
    hostname      = string
    num_cpus      = number
    memory        = number
    guest_id      = string
  }))
}

###
### read vSphere infra
####
data "vsphere_datacenter" "datacenter" {
  name = var.datacenter
}

data "vsphere_host" "vsphere_host" {
  name          = var.vsphere_host
  datacenter_id = data.vsphere_datacenter.datacenter.id
}

data "vsphere_datastore" "datastore" {
  name          = var.datastore
  datacenter_id = data.vsphere_datacenter.datacenter.id
}

data "vsphere_network" "isolated_net" {
  name          = var.isolated_portgroup
  datacenter_id = data.vsphere_datacenter.datacenter.id
}

data "vsphere_virtual_machine" "lin_vm_template_list" {
  for_each      = { for vm in var.lin_vm_map : vm.vm_name => vm }
  name          = each.value["template_name"]
  datacenter_id = data.vsphere_datacenter.datacenter.id
}

### clone VM
resource "vsphere_virtual_machine" "lin_vm_from_template" {
  for_each = { for vm in var.lin_vm_map : vm.vm_name => vm }

  clone {
    template_uuid = data.vsphere_virtual_machine.lin_vm_template_list["${each.value["vm_name"]}"].id
  }

  name             = "${each.value["vm_name"]}-${var.lab_id}"
  folder           = data.vsphere_folder.lab_folder.path
  resource_pool_id = data.vsphere_host.vsphere_host.resource_pool_id
  datastore_id     = data.vsphere_datastore.datastore.id
  host_system_id   = data.vsphere_host.vsphere_host.id

  wait_for_guest_net_timeout = 0
  wait_for_guest_ip_timeout  = 0
  guest_id                   = each.value["guest_id"]

  num_cpus = each.value["num_cpus"]
  memory   = each.value["memory"]

  firmware = data.vsphere_virtual_machine.lin_vm_template_list["${each.value["vm_name"]}"].firmware

  enable_disk_uuid = "true"

  network_interface {
    network_id   = data.vsphere_network.isolated_net.id
    adapter_type = data.vsphere_virtual_machine.lin_vm_template_list["${each.value["vm_name"]}"].network_interface_types[0]
  }

  scsi_type = data.vsphere_virtual_machine.lin_vm_template_list["${each.value["vm_name"]}"].scsi_type

  dynamic "disk" {
    for_each = data.vsphere_virtual_machine.lin_vm_template_list["${each.value["vm_name"]}"].disks

    content {
      label            = disk.value.label
      unit_number      = disk.value.unit_number
      size             = disk.value.size
      eagerly_scrub    = disk.value.eagerly_scrub
      thin_provisioned = disk.value.thin_provisioned
    }
  }

  lifecycle {
    ignore_changes = all
  }
}

Debug Output

https://gist.github.com/ravatheodor/e70b7865fbb9e6b21d25c7a38a16e457#file-gistfile1-txt

Panic Output

No response

Expected Behavior

terraform plan successful

Actual Behavior

terraform plan failed

Steps to Reproduce

create an empty VM with 15 disks on SCSI controller 0 create a resource vsphere_virtual_machine cloning the VM using dynamic disk run terraform plan

Environment Details

No response

Screenshots

scsi-0-7-not-used

References

No response

github-actions[bot] commented 10 months ago

Hello, ravatheodor! 🖐

Thank you for submitting an issue for this provider. The issue will now enter into the issue lifecycle.

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tenthirtyam commented 10 months ago

Could you please use the Markdown tools to format the example for readability? Thanks!

ravatheodor commented 10 months ago

Hope it helps now. It's basically a clone from template, but done in a convoluted way.

peterbaumert commented 7 months ago

Hi, I am having the same issue now. Is there any news regarding this?

The issue lies in https://github.com/hashicorp/terraform-provider-vsphere/blob/db8347d25cb30d13700b75f36ee23c564c1ec200/vsphere/internal/virtualdevice/virtual_machine_disk_subresource.go#L1623 this line.

Since in the next line it just compares current > max, this line should be adjusted to 16-1

tenthirtyam commented 3 months ago

Working on this one, it's a little more complicated that just changing maxUnit := ctlrCount*15 - 1 to maxUnit := ctlrCount*16 - 1.

I've got a local branch that has changes to account for 0:7 being reserved in the range and throwing an error it unit_number == 7.

I have the code working but during the provision it's erroring on the clone - just need to work past that next.

hashicorp / terraform-provider-vsphere