From owner-freebsd-questions@FreeBSD.ORG Fri Apr 24 21:06:19 2009 Return-Path: Delivered-To: freebsd-questions@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id 606011065673 for ; Fri, 24 Apr 2009 21:06:19 +0000 (UTC) (envelope-from wojtek@wojtek.tensor.gdynia.pl) Received: from wojtek.tensor.gdynia.pl (wojtek.tensor.gdynia.pl [IPv6:2001:4070:101:2::1]) by mx1.freebsd.org (Postfix) with ESMTP id A9C648FC14 for ; Fri, 24 Apr 2009 21:06:17 +0000 (UTC) (envelope-from wojtek@wojtek.tensor.gdynia.pl) Received: from wojtek.tensor.gdynia.pl (localhost [IPv6:::1]) by wojtek.tensor.gdynia.pl (8.14.3/8.14.3) with ESMTP id n3OL5hYd002740; Fri, 24 Apr 2009 23:05:43 +0200 (CEST) (envelope-from wojtek@wojtek.tensor.gdynia.pl) Received: from localhost (wojtek@localhost) by wojtek.tensor.gdynia.pl (8.14.3/8.14.3/Submit) with ESMTP id n3OL5hEe002737; Fri, 24 Apr 2009 23:05:43 +0200 (CEST) (envelope-from wojtek@wojtek.tensor.gdynia.pl) Date: Fri, 24 Apr 2009 23:05:43 +0200 (CEST) From: Wojciech Puchar To: Peter Steele In-Reply-To: <10460020.3001240606733585.JavaMail.HALO$@halo> Message-ID: References: <10460020.3001240606733585.JavaMail.HALO$@halo> User-Agent: Alpine 2.00 (BSF 1167 2008-08-23) MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII; format=flowed Cc: #freebsd-questions Subject: Re: Unexpected gmirror behavior: Is this a bug? X-BeenThere: freebsd-questions@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: User questions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Fri, 24 Apr 2009 21:06:19 -0000 i think it's a bug but only happens with such massive mirror. very few people do more than 2-way mirrors that's probably it wasn't catched. please do report the bug - it's critical. On Fri, 24 Apr 2009, Peter Steele wrote: >> This only happens with ad4. If ad6 for example goes offline in the same way, when it is reinserted >> it does not become the dominant drive and resync its data with the other drives. Rather its data >> is overwritten with the data from the 3 member mirror, as you'd expect. >> looks like very strange bug. many times i got drives disconnected and >> always gmirror resynced > > If I just pull ad4 and then reinsert it without doing a reboot, everything works fine. The problem occurs when ad4 is pulled and then reinserted after the system is shutdown. When the system comes up, it doesn't get added back to the existing mirror but rather becomes the principal member of the mirror, using its old data. Not good. > > _______________________________________________ > freebsd-questions@freebsd.org mailing list > http://lists.freebsd.org/mailman/listinfo/freebsd-questions > To unsubscribe, send any mail to "freebsd-questions-unsubscribe@freebsd.org" > >