dm-devel-bounces@xxxxxxxxxx wrote on 14.03.2006 21:15:10: > Stefan Bader wrote: > > The ideal solution would be to have an interface in the block layer that > > allows us to cancel any submitted requests. But since such a change will > > take quite a lot discussions and work, we want to emulate such a > > behavior in the dm core for now. > > > > The scsi people and some block people have been talking about moving > more error handling functionality into the block layer for a while and > it is slowing moving that way. It could probably be done faster if > people did not concentrate on one subsystem :) > It is not that much about error handling. More about policy. If the subsystem decides that io took enough time or maybe it just doesn't want to go on (could be a force umount...) it would be nice to be able to stop lower level drivers from doing error recovery. Thus the idea of stopping a submitted request. The changes to the core now shall fake this as long as there isn't such a functionality in the kernel with an interface that can handle this. > Maybe you should post to lkml and linux-scsi and get some responses from > them before adding it to dm core. If a post already went out to those > list my fault for missing it. > No it didn't. I guess lkml is a good point. I am not sure about linux-scsi. As it is not related specifically to scsi... Stefan Bader SW Linux on zSeries Development & Services Stefan.Bader@xxxxxxxxxx ---------------------------------------------------------------------------------- When all other means of communication fail, try words. -- dm-devel@xxxxxxxxxx https://www.redhat.com/mailman/listinfo/dm-devel
