Dear list members, I upgraded to 3.13-rc5 kernel and started to defrag my whole file system with the following commands: cd / for i in */*; do if [[ "$i" != windows* ]]; then echo "------$i------"; btrfs fi defrag -clzo -r "$i"; fi; done 2>&1 | tee /root/defrag After 10 or 15 seconds my computer reboots itself without any warning. In dmesg I see only the following: [ 531.866566] btrfs: device fsid 2cc2b266-3f04-4f1c-8477-cf7efd6ac139 devid 1 transid 396679 /dev/sda7 [ 532.001919] watchdog watchdog0: watchdog did not stop! [ 532.002719] watchdog watchdog0: watchdog did not stop! Together with this I'm constantly getting sysfs WARNINGS into dmesg, but I don't think this would be related: WARNING: CPU: 5 PID: 1644 at /home/abuild/rpmbuild/BUILD/kernel- desktop-3.13.rc5/linux-3.13-rc5/fs/sysfs/group.c:214 device_del+0x3b/0x1b0() sysfs group ffffffff81c7e040 not found for kobject 'hidraw2' Versions: OS: openSUSE 13.1 Kernel: 3.13.0-rc5-1.g7127d5f-desktop btrfs: v3.12+20131125 Ákos -- 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