On Sat, 2017-05-06 at 15:50 -0400, Phil Turmel wrote: > > I think a case can be made for wiping it all during create, for > consistency with other kernel behaviour. If you allocate memory for > userspace, or or create a new file on a filesystem with a specific > size, > linux goes to some length to deliver zeros in both cases. Arguably, > it > should do so in MD, too. > > However, changing the default behaviour would fit Linus' definition > of a > regression, I would think. +1 for the last paragraph. Waiting for the day when a big corporate user creates an MD mirror from a disk with invaluable data and expects the data to persist, but mdadm just wipes it all ... Martin -- Dr. Martin Wilck <mwilck@xxxxxxxx>, Tel. +49 (0)911 74053 2107 SUSE Linux GmbH, GF: Felix Imendörffer, Jane Smithard, Graham Norton HRB 21284 (AG Nürnberg) -- dm-devel mailing list dm-devel@xxxxxxxxxx https://www.redhat.com/mailman/listinfo/dm-devel