Hi, Kernel 2.6.33-0.46.rc8.git1.fc13.x86_64 I think I ran into the issue that triggers when you write the a btrfs filesystem and then umount it and it takes a long time while writing out the data. It ends up writing at about 1MiB/second according to dstat. My understanding this issue is already fixed in the latest code. But that is not the issue I am reporting. While waiting for the umount to complete, df shows the wrong device. # df -h Filesystem Size Used Avail Use% Mounted on /dev/sda2 9.8G 7.5G 2.3G 77% / tmpfs 1.9G 536K 1.9G 1% /dev/shm /dev/sda6 485M 62M 398M 14% /boot /dev/sda7 111G 464M 111G 1% /mnt/t # umount /mnt/t # df -h Filesystem Size Used Avail Use% Mounted on /dev/sda2 9.8G 7.5G 2.3G 77% / tmpfs 1.9G 536K 1.9G 1% /dev/shm /dev/sda6 485M 62M 398M 14% /boot /dev/sda7 9.8G 7.5G 2.3G 77% /mnt/t The second df was run while waiting for the 111GB partition to unmount. -- 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