Hi, I'm not sure whether it's a bug in btrfs or my distro but I discovered an odd behavior today. My Setup: * Btrfs v3.12+20131125 * /dev/sda – Boot OS - opensuse 13.1 * Btrfs RAID 1 on /dev/sdb1 and /dev/sdc1 I added an extra HDD with an other OS and Data on it witch accidentally became /dev/sdc. Btrfs got mounted at boot time without any complains but in the main volume was empty. Some subvolumes still had Data. I took the extra HDD out but still no data in the Btrfs main volume. Bfrfsck reported no error. Some Parts on the (accidentally) /dev/sdc are now corrupt. I would expect that btrfs would throw an error when getting in the kind of scenario. Regards Ingo -- 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