common: Filter dmesg on failure to warnings and errors#3957
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zhijianli88 wants to merge 1 commit intoflatcar:mainfrom
Open
common: Filter dmesg on failure to warnings and errors#3957zhijianli88 wants to merge 1 commit intoflatcar:mainfrom
zhijianli88 wants to merge 1 commit intoflatcar:mainfrom
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When a script fails, the die_notrace function dumps the entire dmesg buffer for debugging purposes. On a busy system, this log can be excessively long, making it difficult to locate the actual kernel-level warnings or errors that may have caused the failure. The important messages are often buried in a flood of unrelated informational output. Modify the dmesg call in the error handler to make debugging easier. Use the --level=err,warn option to limit the output to only warning and error messages, which significantly reduces noise and focuses on potential problems. In addition, add the --ctime option to print human-readable timestamps for better event correlation and --color=never to ensure clean, parseable output in log files. The debug section header is also updated to reflect this change. Signed-off-by: Li Zhijian <lizhijian@fujitsu.com>
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I have a branch that drops this stuff altogether, among other things - it turned out to be never of any use. I'll file a PR eventually. |
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When a script fails, the die_notrace function dumps the entire dmesg buffer for debugging purposes. On a busy system, this log can be excessively long, making it difficult to locate the actual kernel-level warnings or errors that may have caused the failure. The important messages are often buried in a flood of unrelated informational output.
Modify the dmesg call in the error handler to make debugging easier. Use the --level=err,warn option to limit the output to only warning and error messages, which significantly reduces noise and focuses on potential problems.
In addition, add the --ctime option to print human-readable timestamps for better event correlation and --color=never to ensure clean, parseable output in log files. The debug section header is also updated to reflect this change.