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loeg
10 months ago
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What's Inside a Linux Kernel Core Dump
The crash dumper only needs to write to disk or network. The other steps are just things the kexec process does to achieve that aim.
worthless-trash
10 months ago
[–]
No, this is not true. If you just boot like a regular operating system, you will trash the crashed kernel making the dump useless.
loeg
10 months ago
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parent
[–]
A crash dumper does not have to be implemented with a reboot; this is just something Linux chooses to do. I have actually worked on kernel code that performs crash dumps to disk and over the network, if you find that kind of expertise relevant.
worthless-trash
10 months ago
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root
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I really do.
I believe kexec/kdump does execute in place and does not go through a full reboot, am I wrong ?
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