Azure Resource Manager: attach VHD to a VM during provisioning? - azure

Question

I'm trying to attach an existing VHD disk from a Storage Account to VM during Azure Resource manager provisioning with a template.
My dataDisk resource is:
"dataDisks": [
{
"name": "jmdisk",
"diskSizeGB": "100",
"lun": 0,
"vhd": {
"uri": "https://jmje.blob.core.windows.net/vhds/jenkinshome.vhd"
},
"createOption": "attach"
}
]
But during deploy - I have an error from Azure:
STATUSMESSAGE{
"error": {
"code": "OperationNotAllowed",
"target": "dataDisk",
"message": "Addition of a blob based disk to VM with managed disks is not supported."
}
}
Unfortunately can't google anything related, i.e. - a correct way to attach an existing disk.
UPD Solved this by just creating new Managed disk and copy data there.

Answer 1

You can create a managed disk from an existing blob -- you can see a sample of that here: https://github.com/chagarw/MDPP/blob/master/101-create-image-availabilityset-2vm-from-blob/azuredeploy.json
It uses existing blobs for both OS and data, you don't have to do it that way... In your case it sounds like you want an implicit OS disk and then an explicit data disk? Which you could also do, just use different images for each.

Answer 2

Well, the error gives it up, you are probably not familiar with Managed Disks yet. So you are creating a VM with OS disk as managed, in that case you cannot use existing disks to attach to a VM, just create a VM with regular disk (just like you do with data disk).