From owner-freebsd-hackers@FreeBSD.ORG Sun Jan 23 16:24:28 2005 Return-Path: Delivered-To: freebsd-hackers@freebsd.org Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125]) by hub.freebsd.org (Postfix) with ESMTP id 039D316A4CE; Sun, 23 Jan 2005 16:24:28 +0000 (GMT) Received: from woozle.rinet.ru (woozle.rinet.ru [195.54.192.68]) by mx1.FreeBSD.org (Postfix) with ESMTP id 4987143D5A; Sun, 23 Jan 2005 16:24:27 +0000 (GMT) (envelope-from marck@rinet.ru) Received: from localhost (localhost [127.0.0.1]) by woozle.rinet.ru (8.13.1/8.13.1) with ESMTP id j0NGOQj1037113; Sun, 23 Jan 2005 19:24:26 +0300 (MSK) (envelope-from marck@rinet.ru) Date: Sun, 23 Jan 2005 19:24:26 +0300 (MSK) From: Dmitry Morozovsky To: Pawel Jakub Dawidek In-Reply-To: <20050123153011.GZ795@darkness.comp.waw.pl> Message-ID: <20050123192210.O34546@woozle.rinet.ru> References: <20050123170743.B34546@woozle.rinet.ru> <20050123172929.J34546@woozle.rinet.ru> <20050123153011.GZ795@darkness.comp.waw.pl> X-NCC-RegID: ru.rinet MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII cc: freebsd-hackers@FreeBSD.org Subject: Re: 5.3-STABLE: handle_workitem_freefile panic X-BeenThere: freebsd-hackers@freebsd.org X-Mailman-Version: 2.1.1 Precedence: list List-Id: Technical Discussions relating to FreeBSD List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Sun, 23 Jan 2005 16:24:28 -0000 On Sun, 23 Jan 2005, Pawel Jakub Dawidek wrote: PJD> You cannot dump to GEOM providers, especially from rank > 1 geoms. PJD> It is better to create more mirrors for every partition you want to mirror PJD> (or slice) instead of whole disk. PJD> One of the benefits is that gmirror marks mirror as clean if there were no PJD> WRITE requests in few seconds, so even after power failure resynchonization PJD> is not needed. When you've many smaller mirrors, after unclean shutdown you PJD> probably don't need rebuild all mirrors. PJD> The argument against could be that when you synchronize many mirrors on PJD> the same disks in parallel, your disks are less happy (in one big mirror PJD> scenario, disk's heads don't have to jump from one place to another so PJD> often). Well, hope I see both sides of the picture. However: how can the be achieved the following goal: have mirrored swap (to keep redundancy and HA) and a place to dump panic images to, modulo having scratch disk and/or scratch unused partition? Sincerely, D.Marck [DM5020, MCK-RIPE, DM3-RIPN] ------------------------------------------------------------------------ *** Dmitry Morozovsky --- D.Marck --- Wild Woozle --- marck@rinet.ru *** ------------------------------------------------------------------------