From mboxrd@z Thu Jan 1 00:00:00 1970 From: Lars Ellenberg Subject: Re: [RFC] dm snapshot based asynchronous replication Date: Thu, 16 Apr 2009 09:02:13 +0200 Message-ID: <20090416070213.GA7566@johann> References: <137413921.2150341239820262767.JavaMail.root@zimbra16-e3.priv.proxad.net> <1046537454.2150461239820304817.JavaMail.root@zimbra16-e3.priv.proxad.net> Reply-To: device-mapper development Mime-Version: 1.0 Content-Type: text/plain; charset=iso-8859-1 Content-Transfer-Encoding: quoted-printable Return-path: Content-Disposition: inline In-Reply-To: <1046537454.2150461239820304817.JavaMail.root@zimbra16-e3.priv.proxad.net> List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: dm-devel-bounces@redhat.com Errors-To: dm-devel-bounces@redhat.com To: christophe.varoqui@free.fr Cc: device-mapper development List-Id: dm-devel.ids On Wed, Apr 15, 2009 at 08:31:44PM +0200, christophe.varoqui@free.fr wrot= e: > > Should I understand there's no way for userspace to extract from the = device mapper the cow'ed chunk list of a vanilla snapshot ? >=20 > Replying to myself, I found an instructive post from Lars of the drdb f= olks : http://markmail.org/message/7qdbp36tohasojuy (thanks for sharing L= ars) >=20 > This script is easy enough to morph from its original snapshot revertin= g purpose to the replication model using the cow device as a changelog I = described. >=20 > Thanks for the inputs. I'll keep posting if I something of general inte= rest comes out of this stuff. that perl hack was meanwhile ported to C by someone. posted earlier this year on dm-devel. also please do not ignore the Zumastor work. --=20 : Lars Ellenberg : LINBIT | Your Way to High Availability : DRBD/HA support and consulting http://www.linbit.com DRBD=AE and LINBIT=AE are registered trademarks of LINBIT, Austria.