On Tue, November 3, 2009 5:46 pm, Michael Evans wrote: >> It is possible to get it fast than it is by increasing the >> array's stripe_cache_size and also increasing the 'backup' size >> that mdadm uses. mdadm-3.1.1 will try to do better in this respect. >> However it will still be significantly slower than e.g. a resync. >> >> NeilBrown >> > > Sorry, one more Q: I was able to find strip_cache_size, and already > asked about stripe_cache_active (and if setting it to 1 was safe); but > I can't seem to even find the 'backup' size variable mentioned > anywhere. I'm going to start looking at the code next, but is it > supposed to be in documentation? It is in the code in mdadm, in 'Grow.c'. It is called 'blocks' I think. I'm not sure off hand what the units are. NeilBrown -- 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