Hi, I've created a new raid10 array from 4, 4TB drives in order to migrate old data to it. As I didn't have enough sata ports, I: - disconnected one of the raid10 disks to free a sata port, - connected an old disk I wanted to migrate, - mounted the array with -o degraded - copied the data it it. After about 2MB I got a "no space left on device message." btrfs fi df showed strange things - much less space in every category (about 8GB?) and none of then was full. Ubuntu 14.10 beta - linux 3.16.0-14 Best regards, Or Tal. -- To unsubscribe from this list: send the line "unsubscribe linux-btrfs" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html