I have a RAID5 array with 4 active devices and two spares. The spares are normally in sleep mode. I ran a resync with: echo repair > /sys/devices/virtual/block/md0/md/sync_action About 20 times (evenly spaced apart) during the resync, the spares were written to, waking them up. Is that behavior desired? It seems to me that it's a waste--I don't know why the resync would bother with the spares. --Rory -- 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