The following patches (based on kernel 2.6.22-rc2) will modify the dm-io library to allow targets to get notified whenever requests to one of the target regions changes its state. Currently this would only be I/O completion but might include time-out notification in future. The current implementation only handles notification events per requests, which isn't sufficiently fine-grained for targets that want to act sooner on I/O completion of single regions. One intended target will be a mirror that can go temporarily out-of-sync if one of the mirror halves takes too much time to respond. Regards, Stefan Bader -- dm-devel mailing list dm-devel@xxxxxxxxxx https://www.redhat.com/mailman/listinfo/dm-devel
