Bluetooth mesh dfu cannot be restored after pausing

[llly]

I used the Bluetooth mesh distributor example from ncs2.9.1, and the Bluetooth mesh dfu can proceed normally. However, when I tried to pause and resume the dfu process, I found that it cannot recover from the pause

According to the documentation, I use mesh models dfd suspend to pause the dfu and mesh models dfu cli resume to resume the dfu process.

In the following figure, it can be seen that during the DFU process, I used the pause command.

On the left is the distributor, and on the right is the node that receives new firmware (Bluetooth mesh dfu target example)

Then I sent the mesh models dfu cli resume, wanting the distributor to continue with the dfu process, but the screenshot below would appear. After outputting some logs, the distributor would get stuck, and even sending shell commands would not respond

It seems that after pausing and resuming, the distributor did not receive a response from the node? Do nodes also need to send any commands to successfully recover? But the document does not mention that nodes need to be operated on

[AHaug]

Hello,

According to the documentation, I use mesh models dfd suspend to pause the dfu and mesh models dfu cli resume to resume the dfu process.

Could you point me to which documentation/where in the documentation this is stated so that I can ensure that I'm on the correct page as you?

Kind regards,
Andreas

[llly]

Hello

This is the link to the document

docs.nordicsemi.com/.../dfu_over_bt_mesh.html

[AHaug]

Thank you. 

I'm struggling a bit to recreate the faulty behavior you see when suspending, but I will keep trying today.

Are you able to generate a Mesh sniffer trace with the nRF Mesh Sniffer application for Android and upppload it here? I.e this one https://play.google.com/store/apps/details?id=no.nordicsemi.android.mesh.sniffer&hl=en

Kind regards,
Andrea

[llly]

Thanks

I'll give it a try first. If I collect data, I'll send it to you

[llly]

hello

I have captured some data use mesh sniffer, which was started before the mesh dfu started and stopped after reproducing the issue of being unable to recover after the pause

5.9 mesh dfu data.json

If you need any other data, please let me know

[llly]

The log I sent earlier did not add the network key and app key, so it may not be very useful. This is the log with the added key, which seems to have more data.

The log of the issue where a second pause cannot be performed after pausing and resuming.json

However, when capturing this log, the problem with mesh dfu is different. After pausing this time, the dfu process can be restored normally, but it cannot be paused again at this time. In short, there is still a problem. I will try to reproduce the issue that cannot be restored after pausing later and send you the log for this problem