Add support of Write Accelerator to azure_rm_manageddisk

[AndriyDmytrenko]

SUMMARY

Write Accelerator support would be nice to have implemented for Azure managed disks.
https://docs.microsoft.com/en-us/azure/virtual-machines/how-to-enable-write-accelerator
On the azure portal it is configurable as part of the Host Caching option, so I think the best place to add it to is attach_caching as well, or by adding another key - write_accelerator: yes/no

ISSUE TYPE

• Feature Idea

COMPONENT NAME

azure_rm_manageddisk

ADDITIONAL INFORMATION

azure_rm_manageddisk:
  attach_caching: write_accelerator

[Fred-sun]

@AndriyDmytrenko Thank you for asking this question. I will investigate and add this Feature! Thank you very much!

[iwt-cmd]

I realize this is an older feature request but this would be very useful for our team as well. We have a large inventory of M-series VMs that have Write Accelerator enabled which we'll be managing with Ansible. Our workaround right now is using a custom execution environment with the AZ CLI installed then using "az vm update -g <rg_name> -n <vm_name> --write-accelerator <disk_lun_num>=true" via the Command module. What takes about 15-20 lines of YAML could be cut down to 1 by adding this option.

[unkaputtbar112]

Hi, is there any progress in this case? This issue/request is open since 2021 and since 2023 marked as high_priority.

By the way, it would go hand in hand with changes to the _info Module as well, as it shows "None" for attach_caching when Write Accelerator is enabled.

Seems like the "issue" starts deeper, as the azure.mgmt.compute (which is used by Ansible) is lacking it as well:

class CachingTypes(str, Enum, metaclass=CaseInsensitiveEnumMeta):
    """Specifies the caching requirements. Possible values are: **None,** **ReadOnly,** **ReadWrite.**
    The default values are: **None for Standard storage. ReadOnly for Premium storage**.
    """

    NONE = "None"
    READ_ONLY = "ReadOnly"
    READ_WRITE = "ReadWrite"

So the Python SDK for Azure doesn't offer a solution for this issue.
Created an issue on the Azure SDK for Python Repo:
Azure/azure-sdk-for-python#39243

[Fred-sun]

@AndriyDmytrenko @unkaputtbar112 I am very sorry for missing this problem, I will add this function as soon as possible, thank you!

[Fred-sun]

@AndriyDmytrenko @unkaputtbar112 I added parameter 'write_accelerator_enabled' in #1808, you can try it out, thank you!

[unkaputtbar112]

@Fred-sun added my tests/feedback to the #1808
Thanks for your work :)