What needs to be done to make an ext3 online resizing release?
Very little, actually. The core ext3 kernel patch is already done for 2.4.x and 2.6.x kernels, but no up-to-date patch is available. The ext2online support for working with such a kernel is also finished. The only remaining bit is the ext2prepare support for allowing existing filesystems to be grown beyond the next multiple-of-16GB boundary. As a hack you can patch mke2fs and it will prepare new filesystems for growth up to a factor of 1024x of the original size.
