c9114f9f86
This dumper can instantiate and write the dump's contents to a file-backed vnode. Unlike existing disk or network dumpers, the vnode dumper should not be invoked during a system panic, and therefore is not added to the global dumper_configs list. Instead, the vnode dumper is constructed ad-hoc when a live dump is requested using the new ioctl on /dev/mem. This is similar in spirit to a kgdb session against the live system via /dev/mem. As described briefly in the mem(4) man page, live dumps are not guaranteed to result in a usuable output file, but offer some debugging value where forcefully panicing a system to dump its memory is not desirable/feasible. A future change to savecore(8) will add an option to save a live dump. Reviewed by: markj, Pau Amma <pauamma@gundo.com> (manpages) Discussed with: kib MFC after: 3 weeks Sponsored by: Juniper Networks, Inc. Sponsored by: Klara, Inc. Differential Revision: https://reviews.freebsd.org/D33813 |
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colldef | ||
colldef_unicode | ||
ctypedef | ||
dict | ||
doc | ||
dtrace | ||
examples | ||
i18n | ||
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monetdef | ||
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msgdef | ||
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numericdef | ||
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snmp | ||
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Makefile | ||
Makefile.inc |