From: Lars Ellenberg <lars.ellenberg@linbit.com>
To: christophe.varoqui@free.fr
Cc: device-mapper development <dm-devel@redhat.com>
Subject: Re: [RFC] dm snapshot based asynchronous replication
Date: Thu, 16 Apr 2009 09:02:13 +0200 [thread overview]
Message-ID: <20090416070213.GA7566@johann> (raw)
In-Reply-To: <1046537454.2150461239820304817.JavaMail.root@zimbra16-e3.priv.proxad.net>
On Wed, Apr 15, 2009 at 08:31:44PM +0200, christophe.varoqui@free.fr wrote:
> > Should I understand there's no way for userspace to extract from the device mapper the cow'ed chunk list of a vanilla snapshot ?
>
> Replying to myself, I found an instructive post from Lars of the drdb folks : http://markmail.org/message/7qdbp36tohasojuy (thanks for sharing Lars)
>
> This script is easy enough to morph from its original snapshot reverting purpose to the replication model using the cow device as a changelog I described.
>
> Thanks for the inputs. I'll keep posting if I something of general interest 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.
--
: Lars Ellenberg
: LINBIT | Your Way to High Availability
: DRBD/HA support and consulting http://www.linbit.com
DRBD® and LINBIT® are registered trademarks of LINBIT, Austria.
next prev parent reply other threads:[~2009-04-16 7:02 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <137413921.2150341239820262767.JavaMail.root@zimbra16-e3.priv.proxad.net>
2009-04-15 18:31 ` [RFC] dm snapshot based asynchronous replication christophe.varoqui
2009-04-16 7:02 ` Lars Ellenberg [this message]
2009-04-17 18:01 ` Jonathan Brassow
2009-04-22 21:20 ` Christophe Varoqui
[not found] <1567864196.1766411239656669717.JavaMail.root@zimbra16-e3.priv.proxad.net>
2009-04-13 21:08 ` christophe.varoqui
2009-04-14 3:29 ` FUJITA Tomonori
2009-04-14 14:27 ` Jonathan Brassow
2009-04-14 23:09 ` christophe.varoqui
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