[Bug]: volume modify - Error: Provider produced inconsistent result after apply

[mattskipton]

Terraform Core Version

1.9.5

ONTAP Provider Version

1.1.4

Affected Resource(s)

netapp-ontap_storage_volume_resource

Expected Behavior

when changing the size of a volume the command should complete without errors and vol show should show all relevant information corectly

Actual Behavior

I created a volume with terraform apply and set the volume size to 6gb. The apply completed successfully and vol show looked good. Then I changed the size from 6gb to 10gb in the terraform config and ran a terraform apply and got the following output:

Plan: 0 to add, 1 to change, 0 to destroy.
netapp-ontap_storage_volume_resource.volbug: Modifying... [id=db9b58d1-8703-11ef-bc09-7f7f037f6475]
╷
│ Error: Provider produced inconsistent result after apply
│
│ When applying changes to netapp-ontap_storage_volume_resource.volbug, provider "provider["registry.terraform.io/netapp/netapp-ontap"]" produced an unexpected new value: .nas.junction_path: was
│ cty.StringVal("/volbug"), but now cty.StringVal("").
│
│ This is a bug in the provider, which should be reported in the provider's own issue tracker.
╵

After this error, running a vol show indicated no junction path. I had the volume mounted on a remote client via nfs3 and the volume was still mounted and I still had write access.

If I rerun terraform apply the plan will indicate that it's setting the junction path but not changing the size. This time the command will complete successfully.

volbug_terraform_config.zip

Relevant Error/Panic Output Snippet

❯ terraform apply

Terraform used the selected providers to generate the following execution plan. Resource actions are indicated with the following symbols:
  + create

Terraform will perform the following actions:

  # netapp-ontap_storage_volume_resource.volbug will be created
  + resource "netapp-ontap_storage_volume_resource" "volbug" {
      + aggregates       = [
          + {
              + name = "aggr1"
            },
        ]
      + analytics        = (known after apply)
      + comment          = (known after apply)
      + cx_profile_name  = "aws_svm"
      + efficiency       = (known after apply)
      + encryption       = false
      + id               = (known after apply)
      + language         = (known after apply)
      + name             = "volbug"
      + nas              = {
          + export_policy_name = "open"
          + group_id           = 0
          + junction_path      = "/volbug"
          + security_style     = "unix"
          + unix_permissions   = 755
          + user_id            = 0
        }
      + qos_policy_group = (known after apply)
      + snaplock         = {
          + type = "non_snaplock"
        }
      + snapshot_policy  = "ATCApps"
      + space            = {
          + logical_space          = {
              + enforcement = false
              + reporting   = false
            }
          + percent_snapshot_space = 5
          + size                   = 6
          + size_unit              = "gb"
        }
      + space_guarantee  = "none"
      + state            = (known after apply)
      + svm_name         = "vs-aws-appsdev"
      + tiering          = {
          + minimum_cooling_days = (known after apply)
          + policy_name          = "none"
        }
      + type             = (known after apply)
    }

Plan: 1 to add, 0 to change, 0 to destroy.

Do you want to perform these actions?
  Terraform will perform the actions described above.
  Only 'yes' will be accepted to approve.

  Enter a value: yes

netapp-ontap_storage_volume_resource.volbug: Creating...
netapp-ontap_storage_volume_resource.volbug: Creation complete after 2s [id=db9b58d1-8703-11ef-bc09-7f7f037f6475]

Apply complete! Resources: 1 added, 0 changed, 0 destroyed.
❯ terraform apply --auto-approve
netapp-ontap_storage_volume_resource.volbug: Refreshing state... [id=db9b58d1-8703-11ef-bc09-7f7f037f6475]

Terraform used the selected providers to generate the following execution plan. Resource actions are indicated with the following symbols:
  ~ update in-place

Terraform will perform the following actions:

  # netapp-ontap_storage_volume_resource.volbug will be updated in-place
  ~ resource "netapp-ontap_storage_volume_resource" "volbug" {
      ~ analytics        = {
          ~ state = "on" -> (known after apply)
        } -> (known after apply)
      ~ comment          = null -> (known after apply)
      ~ efficiency       = {
          + compression = (known after apply)
          + policy_name = (known after apply)
        } -> (known after apply)
        id               = "db9b58d1-8703-11ef-bc09-7f7f037f6475"
      ~ language         = "c.utf_8" -> (known after apply)
        name             = "volbug"
      ~ qos_policy_group = null -> (known after apply)
      ~ space            = {
          ~ size                   = 6 -> 10
            # (3 unchanged attributes hidden)
        }
      ~ state            = "online" -> (known after apply)
      ~ tiering          = {
          ~ minimum_cooling_days = 0 -> (known after apply)
            # (1 unchanged attribute hidden)
        }
      ~ type             = "rw" -> (known after apply)
        # (8 unchanged attributes hidden)
    }

Plan: 0 to add, 1 to change, 0 to destroy.
netapp-ontap_storage_volume_resource.volbug: Modifying... [id=db9b58d1-8703-11ef-bc09-7f7f037f6475]
╷
│ Error: Provider produced inconsistent result after apply
│ 
│ When applying changes to netapp-ontap_storage_volume_resource.volbug, provider "provider[\"registry.terraform.io/netapp/netapp-ontap\"]" produced an unexpected new value: .nas.junction_path: was
│ cty.StringVal("/volbug"), but now cty.StringVal("").
│ 
│ This is a bug in the provider, which should be reported in the provider's own issue tracker.
╵
❯ terraform apply --auto-approve
netapp-ontap_storage_volume_resource.volbug: Refreshing state... [id=db9b58d1-8703-11ef-bc09-7f7f037f6475]

Terraform used the selected providers to generate the following execution plan. Resource actions are indicated with the following symbols:
  ~ update in-place

Terraform will perform the following actions:

  # netapp-ontap_storage_volume_resource.volbug will be updated in-place
  ~ resource "netapp-ontap_storage_volume_resource" "volbug" {
      ~ analytics        = {
          ~ state = "on" -> (known after apply)
        } -> (known after apply)
      ~ comment          = null -> (known after apply)
      ~ efficiency       = {
          + compression = (known after apply)
          + policy_name = (known after apply)
        } -> (known after apply)
        id               = "db9b58d1-8703-11ef-bc09-7f7f037f6475"
      ~ language         = "c.utf_8" -> (known after apply)
        name             = "volbug"
      ~ nas              = {
          ~ junction_path      = "" -> "/volbug"
            # (5 unchanged attributes hidden)
        }
      ~ qos_policy_group = null -> (known after apply)
      ~ state            = "online" -> (known after apply)
      ~ tiering          = {
          ~ minimum_cooling_days = 0 -> (known after apply)
            # (1 unchanged attribute hidden)
        }
      ~ type             = "rw" -> (known after apply)
        # (8 unchanged attributes hidden)
    }

Plan: 0 to add, 1 to change, 0 to destroy.
netapp-ontap_storage_volume_resource.volbug: Modifying... [id=db9b58d1-8703-11ef-bc09-7f7f037f6475]
netapp-ontap_storage_volume_resource.volbug: Modifications complete after 1s [id=db9b58d1-8703-11ef-bc09-7f7f037f6475]

Apply complete! Resources: 0 added, 1 changed, 0 destroyed.

Terraform Configuration Files

volbug_terraform_config.zip

Steps to Reproduce

apply a volume config
change the volume size
apply the config again

Debug Output

terraform_debug.log

Panic Output

No response

Important Factoids

this is being run against an svm in a cloud volumes ontap installation in aws

References

No response

Would you like to implement a fix?

No