Aztfexport fails to export resources when there are two data disk or two nic even if I use --append flag in the command

Question

Aztfexport fails to export resources when there are two data disk or two nic attached to an azure vm even if I use --append flag in the command.

Error: [aztfexport] 2025/06/17 08:39:23 DeInitializing...

Error: parallel importing: 1 error occurred:

• task handler error: failed to merge state file: 1 error occurred:
• resource azurerm_managed_disk.res-0 is defined in both state files C:\Windows\SystemTemp\34534\terraform.tfstate and C:\Windows\SystemTemp\aztfexport-2342\terraform.tfstate

aztfexport resource --append --generate-import-block --plain-ui -n -o newfolder "$osdiskid"

Answer 1

@!thr@

Error indicates a state file conflict. This typically arises when multiple resources share the same default name or identifier, leading to collisions during the export process.

 Resource Naming Conflicts: Azure resources like managed disks or network interfaces often have default names such as res-0, nic-0, etc. If multiple resources share the same default name, aztfexport may attempt to export them into the same state file, causing conflicts.

 Use of --append Flag: While the --append flag is intended to add resources to an existing state file, it doesn't resolve naming conflicts. If two resources have identical names, aztfexport cannot distinguish between them, resulting in the error you're seeing.

 

Recommendation:

 1.Use the --pattern Flag you can use the --pattern flag to filter resources by name or type during export. For example:

aztfexport resource --append --pattern "nic" --generate-import-block --plain-ui -n -o newfolder "$osdiskid"

 This command filters and exports only the resources that match the specified pattern, reducing the chance of conflicts.

 2. Export Resources Individually

 Export resources one at a time to isolate potential conflicts. For example:

 

aztfexport resource --append --generate-import-block --plain-ui -n -o newfolder "$osdiskid" 
aztfexport resource --append --generate-import-block --plain-ui -n -o newfolder "$nicid1"
aztfexport resource --append --generate-import-block --plain-ui -n -o newfolder "$nicid2"

 By exporting each resource separately, you can identify and address conflicts more easily.

Please let me know how it goes

Answer 2

Hi, Thanks for the response.

My scenario is, am creating a pipeline that has to import the azure vm and its attached resources using aztfexport. The vm has two data disk attached to it. Now when I import the data disk, I have to use --name-pattern flag, as the default "res-0" is already used to import virtual machine resource. Now when I use the --generate-import-block flag, its create a import.tf file with two data disk resource name as res-0 and the terraform plan throws error as it doesn't exist but it exist with the different name specified in --name-pattern.

Answer 3

Hi !thr@,

I was tried non-interactive mode its working fine for me.

I used the following command:

aztfexport resource-group --non-interactive --name-pattern azureexporttf --generate-import-block myResourceGroup

Could you please share the error message you encountered when running the command, in a private message? This will help me better understand the issue and provide more accurate assistance.

If you have any further queries, let me know

Thank you.