MAVSDK Download Log is always error with missing chunk ??

[aminballoon]

if have use MAVSDK 2.12.2 Download Log feature bit while its downloading its always show

[03:11:56|Error] Timeout! (log_files_impl.cpp:380)
[03:11:56|Error] Requesting missing chunk:      513/757 (log_files_impl.cpp:381)
[03:12:03|Error] Timeout! (log_files_impl.cpp:380)
[03:12:03|Error] Requesting missing chunk:      599/757 (log_files_impl.cpp:381)
[03:12:04|Error] Timeout! (log_files_impl.cpp:380)
[03:12:04|Error] Requesting missing chunk:      600/757 (log_files_impl.cpp:381)
[03:12:11|Error] Timeout! (log_files_impl.cpp:380)
[03:12:11|Error] Requesting missing chunk:      674/757 (log_files_impl.cpp:381)
[03:12:17|Error] Timeout! (log_files_impl.cpp:380)
[03:12:17|Error] Requesting missing chunk:      729/757 (log_files_impl.cpp:381)

What happen with this ??

[julianoes]

Can you add steps how to reproduce this? What link is this over?

[aminballoon]

What information does you want to know more about this issue ??

[julianoes]

What code do you run? E.g. an example? How is the Pixhawk connected? USB? Is it on Linux, macOS, Windows? Just more information. Which PX4 version?

[aminballoon]

How is the Pixhawk connected > "UART/TTL" on "Linux", i have tried PX4 1.12.3, 1.14.3 its always get report missing chunk , Its can downloaded log but I want to know what happen of this error .

[dakejahl]

@aminballoon chunks can get missed if your link isn't 100% lossless. Perhaps this would be a warning rather than an error

[git-lisx]

I use this example https://github.com/mavlink/MAVSDK-Python/blob/main/examples/logfile_download.py, and this problem occurs. Environment: Ubuntu20.04, Python3.10, using the PX4 simulation environment (make px4_sitl jmavsim)

[julianoes]

@git-lisx ok, what MAVSDK version is this and which mavsdk_server version (if different from what is shipped with it)?

[git-lisx]

@julianoes mavsdk version is 3.0.1 mavsdk_server is used in mavsdk, start the command ./envs/python3.10/lib/python3.10/site-packages/mavsdk/bin/mavsdk_server -p 50051

I found the following situations: 1. mavsdk_server will report an error, but the log can also be downloaded; 2. If the code and mavsdk_server are not on the same machine, is this a bug or is it designed this way? The downloaded log file is on the computer where mavsdk_server is located, not on the machine running this code https://github.com/mavlink/MAVSDK-Python/blob/main/examples/logfile_download.py

[julianoes]

1. mavsdk_server will report an error, but the log can also be downloaded;

This could be if there are messages dropped and then recovered by additional transfers. Have you made sure the file is correct? E.g. with a checksum?

The downloaded log file is on the computer where mavsdk_server is located

Yes, that's expected, although not super intuitive indeed.