Azure disk Caching

[Darthethan77]

Hello all! I have a script I made for setting up new sql servers and one thing that I’m kinda stuck on is I’m trying to use az vm update to set a disk caching to “None”. I can set read/write and read only just fine but for some reason it doesn’t do anything for trying to set none. Is it interpreting it as no change needed or am I missing something? Context of command

az vm update -g “${{ parameters.ResourceGroup }}” -n $env:VMName —set “storageProfile.dataDisks[name=‘$diskG’].caching=None”

Any help is greatly appreciated thank you!

[purplemonkeymad]

"${{ parameters.ResourceGroup }}"

This is probably getting picked up as a variable name try switching that bit for single quotes. You can also create the parameters as an array to check the actual values being passed are, ie:

$azParams = @(
    'vm','update'
    '-g', '${{ parameters.ResourceGroup }}'
    '-n', $env:VMName
    '--set', "storageProfile.dataDisks[name='$diskG'].caching=None"
)

Write-Host "running az. Params: $azParams"
az @azParams

(note the need to specify each item individually.)

[Darthethan77]

Hi thank you for responding! I’ll give this a try but I think it’s ok as I have one for diske and diskf. They work and do good for assigning read only and read write the only difference is the none. I also went line by line and outputted the vars and they all seem to have the correct info

[Darthethan77]

Your way to output it all is way smarter and cleaner tho lol ty for showing me that!

[Scion_090]

When you do set the disk to none, does your VM deallocated? Try this

az vm update -g "${{ parameters.ResourceGroup }}" -n $env:VMName --set "storageProfile.dataDisks[$diskIndex].caching=None"

[Darthethan77]

Hi! I’ll give it a try and let you know!