From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mx3.redhat.com (mx3.redhat.com [172.16.48.32]) by int-mx1.corp.redhat.com (8.13.1/8.13.1) with ESMTP id n0SGRBNa013082 for ; Wed, 28 Jan 2009 11:27:11 -0500 Received: from e32.co.us.ibm.com (e32.co.us.ibm.com [32.97.110.150]) by mx3.redhat.com (8.13.8/8.13.8) with ESMTP id n0SGQqM5017650 for ; Wed, 28 Jan 2009 11:26:52 -0500 Received: from d03relay04.boulder.ibm.com (d03relay04.boulder.ibm.com [9.17.195.106]) by e32.co.us.ibm.com (8.13.1/8.13.1) with ESMTP id n0SGOm83005793 for ; Wed, 28 Jan 2009 09:24:48 -0700 Received: from d03av03.boulder.ibm.com (d03av03.boulder.ibm.com [9.17.195.169]) by d03relay04.boulder.ibm.com (8.13.8/8.13.8/NCO v9.1) with ESMTP id n0SGQbWE138156 for ; Wed, 28 Jan 2009 09:26:38 -0700 Received: from d03av03.boulder.ibm.com (loopback [127.0.0.1]) by d03av03.boulder.ibm.com (8.12.11.20060308/8.13.3) with ESMTP id n0SGQbrw005815 for ; Wed, 28 Jan 2009 09:26:37 -0700 Received: from malahal.localdomain (malahal.beaverton.ibm.com [9.47.17.130]) by d03av03.boulder.ibm.com (8.12.11.20060308/8.12.11) with ESMTP id n0SGQajo005810 for ; Wed, 28 Jan 2009 09:26:37 -0700 Date: Wed, 28 Jan 2009 08:26:36 -0800 From: malahal@us.ibm.com Subject: Re: [linux-lvm] Size of the mirror log? Message-ID: <20090128162636.GA12514@us.ibm.com> References: <20090128085024.GA14023@lupe-christoph.de> MIME-Version: 1.0 Content-Disposition: inline In-Reply-To: <20090128085024.GA14023@lupe-christoph.de> Reply-To: LVM general discussion and development List-Id: LVM general discussion and development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , List-Id: Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit To: linux-lvm@redhat.com Lupe Christoph [lupe@lupe-christoph.de] wrote: > Hi! > > I'm unable to find any information on how the size of the mirror log is > determined. Right now I only have four volumes of 1GB each to test this, > obviously too little. We will be getting a few 128GB volumes soon, but I > would rather have a formula than some test results... > > I presume the size will depend on the number of mirror regions, but how > much log does a region require? Currently the log size is fixed at 1 PE (4MB by default). It is always a 1 PE.