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0a5c04a892
The new '-L' flag will cause savecore to invoke the new mem(4) kernel dump ioctl, taking a dump of the running system and writing the result to a temporary file. Validation of the dump header is performed, similar to regular crash dumps, and the final result is written to livecore.X[.zst|.gz]. Also added is the '-Z' flag, which instructs the kernel to compress the livedump compressed with zstd, akin to the existing -z flag. This option has no effect in normal savecore(8) operation, but in theory could be extended to perform such compression while reading the dump from the dump device. Encryption is unsupported for live dumps. For example: 'savecore -Lz /var/crash' would create: /var/crash/livecore.0.gz Reviewed by: markj MFC after: 2 weeks Sponsored by: Juniper Networks, Inc. Sponsored by: Klara, Inc. Differential Revision: https://reviews.freebsd.org/D34347 |
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| Makefile | ||
| Makefile.depend | ||
| Makefile.depend.options | ||
| minfree | ||
| savecore.8 | ||
| savecore.c | ||