From mboxrd@z Thu Jan 1 00:00:00 1970 From: Mike Tran Subject: Re: [dm-devel] [ANNOUNCE] multipath-tools-0.1.6 Date: 27 Apr 2004 10:40:21 -0500 Sender: linux-raid-owner@vger.kernel.org Message-ID: <1083080421.21372.21.camel@star2.austin.ibm.com> References: <1082930099.3158.13.camel@zezette> <20040426081842.GN8379@nimzo> <1083059878.408e2ea6eab69@imp1-q.free.fr> <20040427100930.GA24944@nimzo> <1083079947.21372.16.camel@star2.austin.ibm.com> Mime-Version: 1.0 Content-Type: text/plain Content-Transfer-Encoding: 7bit Return-path: In-Reply-To: <1083079947.21372.16.camel@star2.austin.ibm.com> To: linux-raid List-Id: linux-raid.ids On Tue, 2004-04-27 at 10:32, Mike Tran wrote: > On Tue, 2004-04-27 at 05:09, thornber@redhat.com wrote: > > On Tue, Apr 27, 2004 at 11:57:58AM +0200, christophe.varoqui@free.fr wrote: > > > Selon thornber@redhat.com: > > > > > > > On Sun, Apr 25, 2004 at 11:54:59PM +0200, christophe varoqui wrote: > > > > > * add the dmadm WIP tool (read MD superblocks and create > > > > > corresponding devmaps when possible) > > > > > > > > :) > > > > > > > Any insight on where to put the log of the mirror target when mapping over a > > > MD-created raid1 ? > > > > MD effectively uses a log with a single region in it. So we only need > > 3 sectors (2 for the header 1 for the bitset) for the log, is there > > any space in the MD metadata where this could be placed ? > > > > - Joe > > The MD device size is 64K aligned and MD superblock size is 4K. In term > of sectors, the calculation is as follows: Oops. I was thinking raid1 when saying : "The MD device size is 64K aligned." I should have said : "The new MD child size is 64K aligned." Mike T.