azure device update agent: SW update OTA: how to download ".swu" image in some other rootfs directory instead of sandbox

Question

azure device update agent: SW update OTA: how to download ".swu" image in some other rootfs directory instead of sandbox

Anonymous

We're working on SW update OTA using azure device update agent, facing some issues.

Issue description: using device update agent we're successfully able to downland ".swu" image that we're deploying from the cloud but after download, ".swu" image is getting deleted from the sandbox.

Sandbox is a directory path on device side (Hardware/Board) where ".swu" image is getting downloaded.

SANDBOX PATH: /var/lib/adu/downloads/356a67a1-7952-44b5-817b-a3acd9005bbb

what we're expecting as a solution : we want to download ".swu" image in some other rootfs directory instead of sandbox.

e.g. /tmp

your help would be grateful, waiting for answer, thanks

LeelaRajeshSayana-MSFT 17,766 Reputation points Moderator

2023-05-30T19:50:16.2633333+00:00

Hi @Anonymous Greetings! Welcome to Microsoft Q&A forum. Thank you for posting the question here. We would be glad to assist you with this request. I appreciate it if you can share more details on any tutorials or links you might have followed in testing the solution. This will help us replicate the behavior from our end and enable us to guide you better.
Anonymous

2023-05-31T05:10:09.6533333+00:00

Hi, thank you for response

these 2 links I followed in testing the solution

https://learn.microsoft.com/en-us/azure/iot-hub-device-update/device-update-raspberry-pi

for Yocto: https://github.com/Azure/iot-hub-device-update-yocto

1 answer

Your answer

LeelaRajeshSayana-MSFT 17,766 Reputation points Moderator

2023-05-30T19:50:16.2633333+00:00

Hi @Anonymous Greetings! Welcome to Microsoft Q&A forum. Thank you for posting the question here. We would be glad to assist you with this request. I appreciate it if you can share more details on any tutorials or links you might have followed in testing the solution. This will help us replicate the behavior from our end and enable us to guide you better.
Anonymous

2023-05-31T05:10:09.6533333+00:00

Hi, thank you for response

these 2 links I followed in testing the solution

https://learn.microsoft.com/en-us/azure/iot-hub-device-update/device-update-raspberry-pi

for Yocto: https://github.com/Azure/iot-hub-device-update-yocto

Answer 1

LeelaRajeshSayana-MSFT 17,766 Moderator

Hi @Anonymous Thank you for providing additional information. Script Handler extension of Azure IoT hub device update is used to prepare and execute a script on the IoT Device. At runtime, the Script Handler will download every file listed in files array, into a workfolder. This is a folder used for storing downloaded file, workflow result file, and any other temp files. The workfolder path is automatically injected to the scripts during run time and it has a path as follows /var/lib/adu/downloads/workflow_id_1234567890/

To provide a custom download path, we can use the argument work-folder under handlerProperties.arguments setting of the Update manifest file to set a custom path. Please refer the following example which displays the arguments for more details.


{
    "description": "Motors Update post-install step",
    "handler": "microsoft/script:1",
    "files": [
        "contoso-motor-installscript.sh"
    ],
    "handlerProperties": {
        "scriptFileName": "contoso-motor-installscript.sh",
        "arguments": "--post-install-sim-success --component-name --component-name-val --component-group --component-group-val --component-prop path --component-prop-val path --work-folder path",
        "installedCriteria": "1.2"
    }
}

Please refer to the Readme file of the script handler for more details on this.

Hope this answers your question. Please let us know if you have any additional questions or need further clarification on this.

If the response helped, please do click Accept Answer and Yes. Doing so would help other community members with similar issue identify the solution. I highly appreciate your contribution to the community.

Anonymous

2023-06-01T10:11:52.4666667+00:00
SWUpdate_OTA_2_2.importmanifest.txt

Hello, thanks for the inputs.

I have a question.

to download the ".swu" image, script handler ("handler": "microsoft/script:1") is mandatory ???

becuase, we're using swupdate handler ("handler": "microsoft/swupdate:1") in our manifest.json file instead of script handler.

Attaching our manifest.json file in the form of .txt (becuase .json option is not given here).

please check our "manifest.json" and suggest if there is wrong something in our manifest.json file.

#NOTE: files that we're deploying from azure cloud are,

1.adu-update-image-raspberrypi4-64-20230522062429.swu (206 MB)

SWUpdate_OTA_2_2.importmanifest.json
Anonymous

2023-06-01T18:12:00.6766667+00:00
we tried your solution in 2 ways:

1st

handler: script handler

handlerProperties.arguments : --work-folder /tmp

Result: ".swu" (SW Update) image was not downloaded at all in work folder (/tmp).

2nd

handler: swupdate handler

handlerProperties.arguments : --work-folder /tmp

Result: still image was downloaded in sandbox (/var/lib/adu/downloads/356a67a1-7952-44b5-817b-a3acd9005bbb) -->> that we do not want to download in sandbox. QUESTION:

we do not want to download a script (because we do not have any script), So why should we use script handler ???

Can't we use swupdate handler to download swupdate (.swu) image.

REMINDER:

Please verify our attached manifest.json SWUpdate_OTA_2_2.importmanifest.txt

and let us know any modification if required.

please help us on this.

Thank You
LeelaRajeshSayana-MSFT 17,766 Reputation points Moderator

2023-06-01T20:37:40.6133333+00:00
Hi @Anonymous Thank you for testing out the suggested approach and sharing your feedback on this.

we do not want to download a script (because we do not have any script), So why should we use script handler ???

Apologies for creating a confusion. You can use the SWUpdate handler to download this and you would not have to use Script Handler.

I have inspected your attached import manifest file. I noticed that you are using Version of SWUpdate handler. Please note that this version does not have any overloads to accept --work-folder path. There is a newer version of SWUpdate handler, version V2, which accepts this parameter. Please find the Readme.md file for more details on this.

Try the following in your steps section and let us know if this helped.

"steps": [ { "type": "inline", "description": "Update the device image to version 0.8.0003.0", "handler": "microsoft/swupdate:2", "files": [ "adu-update-image-raspberrypi4-64-20230522062429.swu" ], "handlerProperties": { "installedCriteria": "0.8.0003.0", "arguments" : "--work-folder /tmp" } } ]
Anonymous

2023-06-02T14:04:33.92+00:00

Hi,

tried your above solution (swupdate : 2 as a handler), still ".swu" image is getting downloaded into sandbox and after some time getting deleted.

please provide us solid solution that would work 100%, It is very urgent, hope you'll understand our situation.

waiting for your response, Thank You.
LeelaRajeshSayana-MSFT 17,766 Reputation points Moderator

2023-06-02T15:12:08.79+00:00

Hi @Anonymous For a deeper investigation and immediate assistance on this issue, please file a support request @ https://aka.ms/azsupt? If you do not have access to a support plan, could you please send an email to azcommunity@microsoft.com with the below details, so that we can work closely on this matter.

Thread URL: Link to this thread.
Azure Subscription ID:
Email Subject : Attn Leela

Share via

azure device update agent: SW update OTA: how to download ".swu" image in some other rootfs directory instead of sandbox

1 answer

Your answer