On Tue, Apr 17, 2012 at 1:35 AM, Shaohua Li <shli@xxxxxxxxxx> wrote: > Discard for raid4/5/6 has limitation. If discard request size is small, we do > discard for one disk, but we need calculate parity and write parity disk. To > correctly calculate parity, zero_after_discard must be guaranteed. I'm wondering if we could use the new bad blocks facility to mark discarded ranges so we don't necessarily need determinate data after discard. ...but I have not looked into it beyond that. -- Dan -- 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
