I've installed xbian distro on RPi.I want to edit the files in my SD card using my computer, Ubuntu 14.04.However, when I insert the SD card, the Ubuntu cannot mount the Xbian partition, and gives the following error:and when I type dmesg | tail  , it gives the following:Now what should I do to access the contents of xbian partition on SD card!?
How to mount btrfs partition?
mount;raspberry pi;btrfs;sd card;xbmc
It'd appear you're using a compression algorithm that has been patched in to the Xbian kernel, but not the Ubuntu kernel. It looks like Xbian patched in and defaulted to lv4.That patch hasn't made it to the mainline kernel (see, e.g., [1] and [2].) So you'd probably have to rebuild your Ubuntu kernel with the Xbian LZ4 patch (the only way you wouldn't is if someone else has already done it, and you just download/install it).It looks like you can find the LZ4 patch at the Xbian kernel github. Look inside the version matching your kernel version for lz4.patch.