Date: Fri, 14 Oct 2011 21:06:57 +0200 From: Andre Oppermann <andre@freebsd.org> To: Gleb Smirnoff <glebius@FreeBSD.org> Cc: net@FreeBSD.org Subject: Re: new CARP implementation Message-ID: <4E988851.3040801@freebsd.org> In-Reply-To: <20111014184843.GI94905@glebius.int.ru> References: <20110810160526.GO43567@FreeBSD.org> <20111013160216.GU94905@glebius.int.ru> <4E9874C5.8070309@freebsd.org> <20111014180205.GG94905@glebius.int.ru> <4E987C0A.2040600@freebsd.org> <20111014184843.GI94905@glebius.int.ru>
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On 14.10.2011 20:48, Gleb Smirnoff wrote: > On Fri, Oct 14, 2011 at 08:14:34PM +0200, Andre Oppermann wrote: > A> On 14.10.2011 20:02, Gleb Smirnoff wrote: > A> > On Fri, Oct 14, 2011 at 07:43:33PM +0200, Andre Oppermann wrote: > A> > A> On 13.10.2011 18:02, Gleb Smirnoff wrote: > A> > A> > Hello networkers, > A> > A> > > A> > A> > I've updated patch& README here: > A> > A> > > A> > A> > http://people.freebsd.org/~glebius/newcarp/ > A> > A> > > A> > A> > Going to commit it to head/ soon. Then I'd like to make > A> > A> > a run through carp-related PRs, update documentation, settle > A> > A> > things a bit... and then make more hacking to restore the > A> > A> > arpbalance feature, as well as bring in ipbalance feature. > A> > A> > A> > A> Excellent! Great work. Looks good. > A> > A> > A> > A> One minor nit: Carp is directly enabled by specifying the vhid. > A> > A> Would it be possible to introduce the keyword "carp" and "-carp" > A> > A> to actually enable/disable an interface for carp? > A> > > A> > We could add additional interface flag, but I don't see point in > A> > enabling/disabling CARP per-interface. > A> > A> Suspending the interface from the group, but retaining the configuration > A> could be one reason. > > Won't ifconfig it down work? Not if I want to continue to use the primary or other non-carp address. > A> > btw, you can configure a VHID and don't attach any addresses > A> > to it. > A> > A> How does that work? What purpose does it serve? > > This is actually how it is configured: SIOCSVH, then SIOCAIFADDR. > There is no practical use in addressless vhid now. If it can cause problems or non-standard behavior it should not be allowed and the carp status should be suspended until fully configured. One more question: Can one interface with multiple addresses become a member of different carp groups (with a different address each)? -- Andre
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