On Wed, Feb 9, 2011 at 2:05 AM, Eric D. Mudama <edmudama@xxxxxxxxxxxxxxxx> wrote: <snip> > I agree that in aggregate we've now done 2 units worth of writes, > however, in a mirror case, we're protecting against both whole-device > failure and single-sector failure modes, so hardly seems like a bad > idea in all applications. Yes, just pass through the discards, and let us mirror. Sync'ing a new drive w/o writing (only what needs to be written) is really trivial (needs no extra saved metadata/LBA bitmaps or ability to query the device for active sectors), if folks would give it some thought and quit saying it shouldn't be done. -- To unsubscribe from this list: send the line "unsubscribe linux-raid" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
