Date: Thu, 2 Apr 2009 06:45:56 -0700 (PDT) From: Won De Erick <won.derick@yahoo.com> To: freebsd-hackers@FreeBSD.org, Andriy Gapon <avg@icyb.net.ua> Subject: Re: watchdog: hw+sw? Message-ID: <630898.7304.qm@web45805.mail.sp1.yahoo.com>
next in thread | raw e-mail | index | archive | help
--- On Thu, 4/2/09, Andriy Gapon <avg@icyb.net.ua> wrote: > > I have some vague thoughts on using SW_WATCHDOG and a > hardware watchdog together. > I think this could be useful but I am not sure how to > implement this. > The idea is this: timeout for SW_WATCHDOG is smaller than > timeout for hw wd; when > some freeze happens sw wd logic kicks in first, stops hw wd > and produces either > panic or ddb prompt; if the freeze is so severe that sw wd > can't run (e.g. > hardware is messed up badly) then hw wd performs its duty. > I am mostly interested in having this in unattended mode > where kernel dump could > be useful for later analysis but the system should recover > in reasonable time. > > Suggestions, opinions? That is interesting! I've been longing for that kind of tool that works with FreeBSD. You might as well want to see/try how the 'bmc-panic' mentioned in the following link is related to your project. http://ipmiutil.sourceforge.net/ Good luck.
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?630898.7304.qm>