Messages in this thread |  | | Date | Fri, 6 Sep 2002 10:09:33 +0000 | From | Pavel Machek <> | Subject | Re: writing OOPS/panic info to nvram? |
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Hi!
> > Ah, ther is no way to write raw blocks at a very low level to disk...?? > > Not reliably; you _know_ your infrastructure has crashed, otherwise you > wouldn't be inside the crash dump handler ;), so you can't possibly trust the > normal block layer to write the crash dump (and not write it over your salary > and customer database).
Floppy seems like safe choice. Verify its special "crash floppy" by checking signature, then write.
> A network dump is much safer, though I would suggest running it over a > dedicated card / driver combo and on a special ethernet protocol, because you > might have lost your IP configuration...
Its enough for it to work 99% cases. Separate ethernet card is overkill, serial console is easier than that. Pavel -- Philips Velo 1: 1"x4"x8", 300gram, 60, 12MB, 40bogomips, linux, mutt, details at http://atrey.karlin.mff.cuni.cz/~pavel/velo/index.html.
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