>>>>> "Neil" == NeilBrown <neilb@xxxxxxx> writes: Neil> I would really rather that discard_zeroes_data were only set on Neil> devices where it was actually true. Then it wouldn't be my Neil> problem any more. Yeah. It's too late for 3.18 but I'll try to get a whitelist going for 3.19. Neil> Here is a question: if a region has been discarded, are we Neil> guaranteed that reads are at least stable. i.e. if I read twice Neil> will I definitely get the same value? If discard_zeroes_data=1, then yes. -- Martin K. Petersen Oracle Linux Engineering -- dm-devel mailing list dm-devel@xxxxxxxxxx https://www.redhat.com/mailman/listinfo/dm-devel
