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Re: [dm-devel] [RFC] dm snapshot based asynchronous replication

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

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