[Andreas Johnsen] > ext2online: resizing to 2424832 blocks > ...flushing buffer 23/block 2392065 > ext2online: resize failed while in kernel > ext2online: Invalid argument Is it using the wrong tool? For umounted directories, I would expect it to use ext2resize and not ext2online. The latter only work if the kernel support resizing mounted directories, and the kernels in debian do not as far as I know.