Neil, I try to create a single-drive RAID0 array with data preservation. It means I have a single disk with partitions and data on them. I would like to migrate this single disk to RAID0 array and then grow it to N devices. Of course I expect partitions with my useful data will be mapped to corresponding MD block devices (/dev/md126p1, /dev/md126p2 etc.). Indeed they are but when I try to mount new block device it disappears from /dev directory and mount is not succeeded. /var/log/messages shows all the time: md126: p1 md126: detected capacity change from 0 to xxxxxxxxxxxxx It is not always reproducible but very often. I try this operation on 0.9 and imsm metadata. Symptoms are similar. Do you have any suggestions? How to fix this issue? Regards Krzysztof -- 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