Hello, list, Neil, I try to add bitmaps to raid4, and mdadm is done this fine. In the /proc/mdstat shows this, and it is really works well. But on reboot, the kernel drops the bitmap(, and resync the entire array if it is unclean). :( It is still uncomplete now? (2.6.16-rc1) Thanks, Janos - 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