On Tue, Apr 21, 2009 at 2:52 AM, John Robinson <john.robinson@xxxxxxxxxxxxxxxx> wrote: > There's no redundancy but it's still the RAID-5 4-disc layout with 3 data > and 1 parity, the parity on a different disc in each stripe. In your case > with a missing disc, for 3 stripes in 4 you have 2 data and 1 parity. Of > course the parity is having to be calculated when you're writing, and > whatever would be written to your missing disc is being discarded. you're right, i didn't think of that. But calculating an xor isn't really a big deal (especially with the aes on top of it) so i still can't see why it's so slow Johannes -- 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
