Date: Mon, 19 Dec 2016 13:33:08 -0800 From: Mark Johnston <markj@FreeBSD.org> To: Alan Somers <asomers@freebsd.org> Cc: "freebsd-hackers@freebsd.org" <freebsd-hackers@freebsd.org> Subject: Re: Setting a dump device from db> ? Message-ID: <20161219213308.GA55919@wkstn-mjohnston.west.isilon.com> In-Reply-To: <CAOtMX2iatbc%2BSrzft-MFkjm8EsZWS=HruZWxGd9wp0XsBjossQ@mail.gmail.com> References: <CAOtMX2iatbc%2BSrzft-MFkjm8EsZWS=HruZWxGd9wp0XsBjossQ@mail.gmail.com>
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On Mon, Dec 19, 2016 at 02:16:25PM -0700, Alan Somers wrote: > Is it possible to set a dump device from loader.conf or from the db> > prompt? I'm trying to investigate a panic in mpr(4), but I can only > reproduce it during the boot, before rc(8) has set my dump device. It > looks like ada(4) initializes before mpr(4), so I should be able to > dump to an ada device, if only I can figure out how. If not, I > suppose I'll have to try gdb over firewire. You can set "dumpdev=ada0p1" or so in loader.conf. See g_dev_init() and init_dumpdev(). This should probably be documented in loader.conf(5).
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