Date: Thu, 13 Nov 1997 09:54:29 -0800 (PST) From: Doug White <dwhite@gdi.uoregon.edu> To: Jason Wells <jcwells@u.washington.edu> Cc: freebsd-questions@FreeBSD.ORG Subject: Re: dump succeeded / savecore: no dump Message-ID: <Pine.BSF.3.96.971113094950.1991F-100000@gdi.uoregon.edu> In-Reply-To: <3.0.3.32.19971112051546.007c2dd0@jcwells.deskmail.washington.edu>
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On Wed, 12 Nov 1997, Jason Wells wrote: > I have been having trouble with umount and panic:page faults. In an effort > to hunt down my enemy I have ventured for the first time into the field > where core dumps frolic. I have been unsuccesful at catching one of these > little beasties. You aren't using umount -f are you? I've had problems dismounting FSs that people are in and then they access something in the disappeared partition which causes a panic. (Of course if you use -f you get what you pay for.) > Upon receiving the panic:page fault I recieve the following at the console. > > dumping to dev 30001 offset 117776 > dump 47 46 45 .... 3 2 1 succeeded > > "Great!" I thought to myself. I have snared the wily dump. > > During the boot sequence I read the message... > > savecore: reboot after panic: page fault > savecore: no dump, not enough free space on device > > BUT swapinfo tells me... > 1K Blocks Used Avail Capacity Type > /dev/wd0s2b 108040 0 107976 0% interleaved BUT what does df report? There has to be enough space on the target FS to restore the dump, which is RAM+swap. by default the core is dropped into /var/crash, if you don't have enough space there the savecore will fail. In that case run savecore yourself: savecore /dir/with/lots/of/space/ See the savecore(8) man page for details. > P.S. Do people appreciate the attempt to mix humor with technical > discussion? No comment. :-) Doug White | University of Oregon Internet: dwhite@resnet.uoregon.edu | Residence Networking Assistant http://gladstone.uoregon.edu/~dwhite | Computer Science Major
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