Date: Mon, 05 Jul 2010 17:46:45 +0300 From: Mikolaj Golub <to.my.trociny@gmail.com> To: Pawel Jakub Dawidek <pjd@FreeBSD.org> Cc: freebsd-fs@freebsd.org Subject: Re: HAST and CARP Message-ID: <86fwzyyoiy.fsf@zhuzha.ua1> In-Reply-To: <20100705143410.GA1782@garage.freebsd.pl> (Pawel Jakub Dawidek's message of "Mon, 5 Jul 2010 16:34:10 %2B0200") References: <4C2F3E14.1080601@soupacific.com> <86pqz3iw33.fsf@kopusha.home.net> <4C31C0E3.8080200@soupacific.com> <20100705143410.GA1782@garage.freebsd.pl>
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On Mon, 5 Jul 2010 16:34:10 +0200 Pawel Jakub Dawidek wrote: PJD> On Mon, Jul 05, 2010 at 08:24:19PM +0900, hiroshi@soupacific.com wrote: >> Hi ! >> >> I checked without ifstate, without CARP ! >> >> ServerA >> #hastctl create zfshast >> #hastd >> #hastctl role primary zfshast >> >> ServerB >> #hastctl create zfshast >> #hastd >> #hastctl role secondary zfshast >> >> check synch on ServerA >> after nodirty bytes >> >> #zpool create hasthome /dev/hast/zfshast >> >> then >> disconnect ethernet. PJD> Split-brain happens when two nodes think they are masters. This is PJD> exactly what happens when you disconnect ethernet. In other words you PJD> asked for split-brain and you got it. Ah! When reading hiroshi@'s description I missed that ServerB was set as primary before ServerA was rebooted (thus it was still primary). So there is no need in reproducing this :-). -- Mikolaj Golub
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