On Wed, Apr 08, 2009 at 09:27:20PM -0400, Chris Mason wrote: > I'm afraid expecting barriers forever in the future isn't completely > compatible with dm or md. Both of these allow the storage to change > over time, and the filesystem needs to handle this without corruptions. The missing piece of the jigsaw is notification to upper layers *ahead* of such reconfigurations. (We have similar notification issues when devices are resized - the current approach is to leave the sysadmin responsible for co-ordinating changes through userspace.) Alasdair -- agk@xxxxxxxxxx -- dm-devel mailing list dm-devel@xxxxxxxxxx https://www.redhat.com/mailman/listinfo/dm-devel