Date: Sun, 14 Mar 2021 00:40:56 +0000 From: Johannes Totz <johannes@jo-t.de> To: freebsd-hackers@freebsd.org Subject: Re: Kernel dump during boot Message-ID: <s2jm2p$5mc$1@ciao.gmane.io> In-Reply-To: <fe6561ba-6daa-68b6-9bc8-abe0ae647166@grosbein.net> References: <s2ipk9$13kq$1@ciao.gmane.io> <fe6561ba-6daa-68b6-9bc8-abe0ae647166@grosbein.net>
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On 14/03/2021 00:01, Eugene Grosbein wrote: > 13.03.2021 23:35, Johannes Totz wrote: > >> Hey everyone, >> >> is there a way to dump the kernel from DDB? > > Try this: > > call doadump > >> I've got a panic during boot, before init is started but after geom and friends are up. So dumpdev hasnt been set yet. >> Can I hardcode it somewhere? Setting kern.shutdown.dumpdevname in loader.conf doesn't seem to work. > > It should work. It worked for me in 11.4. For example: > > dumpdev="/dev/label/swap" > > Later, in multiuser: > > $ sysctl kern.shutdown.dumpdevname > kern.shutdown.dumpdevname: label/swap Ah yes, a simple dumpdev did the trick... (how did I miss that...) Thanks Eugene and Jordan (who replied off-list)!
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