On Wed, Apr 15, 2009 at 08:31:44PM +0200, christophe.varoqui@xxxxxxx 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. -- dm-devel mailing list dm-devel@xxxxxxxxxx https://www.redhat.com/mailman/listinfo/dm-devel