Date: Thu, 12 Sep 2019 20:12:18 -0400 From: Mark Johnston <markj@freebsd.org> To: Ryan Stone <rysto32@gmail.com> Cc: freebsd-hackers@freebsd.org Subject: Re: /etc/rc.d/dumpon runs before netdump can be configured Message-ID: <20190913001218.GH8397@raichu> In-Reply-To: <CAFMmRNyQV8nFNb9zo0R9nX8%2BFOrKN%2BeOYtBDyqHoCAkFZtti5w@mail.gmail.com> References: <CAFMmRNxSdDCB5-78tYYt0sqbRz-quNkfOwAAwivT4-AF9jqGSg@mail.gmail.com> <20190912161342.GB8397@raichu> <CAFMmRNyQV8nFNb9zo0R9nX8%2BFOrKN%2BeOYtBDyqHoCAkFZtti5w@mail.gmail.com>
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On Thu, Sep 12, 2019 at 02:30:58PM -0400, Ryan Stone wrote: > The POLA violation would be that kernel panics during some parts of > the boot process, like during network configuration, wouldn't be > captured. I think it would reasonable to add a dumponlate, following the pattern of mountlate and swaplate, to handle this. > On Thu, Sep 12, 2019 at 12:13 PM Mark Johnston <markj@freebsd.org> wrote: > > > > On Thu, Sep 12, 2019 at 11:32:23AM -0400, Ryan Stone wrote: > > > Hi everyone, > > > > > > I recently tried enabling the netdump client on a system via rc.conf. > > > However, this isn't working for me because dumpon runs before netif, > > > and netdump requires the interface to have been ifconfig'ed up before > > > it will allow netdump to be enabled on an interface. > > > > > > As a result, I get this message during boot, and have to manually run > > > "service dumpon start" after boot to get netdump configured. > > > > > > dumpon: Unable to configure netdump because the interface's link is down. > > > > > > I'm not sure what the best way to clean this up is. Moving dumpon to > > > later in the boot process would be a POLA violation for people dumping > > > to disk. Perhaps we need a separate netdump_client rc.d script? > > > > What exactly is the POLA violation there? > > > > A separate rc script could be helpful for static network > > configurations. For DHCP, I don't see a good solution other than to use > > /etc/dhclient-exit-hooks; there is an example for this in the dumpon(8) > > man page.
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