Error when saving an attached shared disk to VM

Question

I have an Ubuntu VM and a shared disk. When I go to the VM and try to attach the existing shared disk, it gives me an error without error description when I save the VM.

What I am doing wrong?

Answer 1

Hi @Costa, Francesc (Color and Imaging Barcelona)

Azure shared disks for Azure managed disks that allows you to attach a managed disk to multiple virtual machines (VMs) simultaneously. Attaching a managed disk to multiple VMs allows you to either deploy new or migrate existing clustered applications to Azure.

Check the below URL's your doing same process.
Share an Azure managed disk limitations
Shared Storage Options in Azure: Part 1 – Azure Shared Disks
Disk shared sizes
How shared disk works

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Answer 2

@Costa, Francesc (Color and Imaging Barcelona)

You can also find the error from the activity logs:
Sign in to the Azure portal.
Select Monitor > Activity log.
Use the filters to find the log.

Troubleshoot common Azure deployment errors with Azure Resource Manager
Validation errors

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