Date: Tue, 20 Jul 1999 17:00:04 -0400 (EDT) From: "Brian F. Feldman" <green@FreeBSD.org> To: Poul-Henning Kamp <phk@critter.freebsd.dk> Cc: "Steven G. Kargl" <kargl@troutmask.apl.washington.edu>, freebsd-current@FreeBSD.org Subject: Re: is dumpon/savecore broken? Message-ID: <Pine.BSF.4.10.9907201658350.71734-100000@janus.syracuse.net> In-Reply-To: <21539.932493344@critter.freebsd.dk>
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On Tue, 20 Jul 1999, Poul-Henning Kamp wrote:
> In message <199907201742.KAA04068@troutmask.apl.washington.edu>, "Steven G. Kar
> gl" writes:
> >
> >During the boot process I see
>
> > dumpon: crash dumps to /dev/da0s1b (4, 131073)
> > checking for core dump...savecore: can't find device 13/131073
>
> >It seems that the the major device number is reset from 4 to 13.
>
> >troutmask:kargl[225] swapinfo
> >Device 1K-blocks Used Avail Capacity Type
> >/dev/#B13:0x20001 511872 0 511872 0% Interleaved
>
> Yes, all dev_t's which make it out of the kernel have cmajor
> numbers now.
>
> Try this change to savecore:
>
> /ddname = find_dev/s/BLK/CHR/
No, that's wrong. You cannot do buffered-type IO on a cdev. I committed
a workaround, and now it works. There's no easy way around this, except
possibly making kern.dumpdev a string (makes quite a bit of sense there...)
>
>
> --
> Poul-Henning Kamp FreeBSD coreteam member
> phk@FreeBSD.ORG "Real hackers run -current on their laptop."
> FreeBSD -- It will take a long time before progress goes too far!
>
>
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