I am doing a resize on a 4 x 1 TB raid5 array (going to 5x 1 TB). When there is no userland I/O it reports about 1000 minutes to rebuild. However, minor amount of userland demand makes it shoot up to 3500-4000 as the rebuild puts it's own interests behind. However, the I/O there is garbage, in this case a disk-noisy web browser. Can I tell md to give priority to it's rebuild and serve userland as it pleases with -say- a maximum of 10% rebuild time increase? Yes I know that'll make the system very sluggy. I would be finished already but overnight I left a browser tab open that caused according to iostat 400-500 Blk_wrtn contiguously. That is when *not* actually using the browser (I'll report that as a bug). Now I am still at 38% rebuild. Didn't seem worth the price I payed :-) Martin -- %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% Martin Cracauer <cracauer@xxxxxxxx> http://www.cons.org/cracauer/ -- 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
