ACRNLOG
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DESCRIPTION
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acrnlog is a userland tool to capture ACRN hypervisor log, it runs as an
SOS service at boot. It captures two kinds of logs:
- log of current running;
- log of last running if crashed and logs remaining.
The path to save log files is /tmp/acrnog/, so the log files would be lost
after reset.
USAGE
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The acrnlog tool is launched as a service at boot, with 4 1MB log files limited.
To change the log file limitation:
- temporary change
Stop the acrnlog service:
# systemctl disable acrnlog
Restart acrnlog running at backgroud with size and number of files.
For example:
# acrnlog -n 8 -s 4 &
Use get_loglevel/set_loglevel to query and change the hypervisor loglevel.
The mem_loglevel controls log to be saved using acrnlog, while
console_loglevel controls log to output to console. For example:
ACRN:\>get_loglevel
console_loglevel: 2, mem_loglevel: 4
ACRN:\>set_loglevel 2 5
ACRN:\>get_loglevel
console_loglevel: 2, mem_loglevel: 5
- permanent chagne
Edit /usr/lib/systemd/system/acrnlog.service to attached the -n and -s options to
the ExecStart cmd, and restart the service. For example:
ExecStart=/usr/bin/acrnlog -n 8 -s 4
BUILD&INSTALLATION
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# make
copy acrnlog to /usr/bin/ and copy acrnlog.service to /usr/lib/systemd/system/
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