The question is what do you want from this feature. The LVM would be able to provide you the ability to adjust the size dynamically. loop device is not part of this game. It offers you build the kernel or fixed file only. To append the number of null will make the system to be reformatted again to me. I don't think we can do it. ------------ Banyan He Blog: http://www.rootong.com Email: banyan at rootong.com On 2012-10-23 2:08 PM, Jobst Schmalenbach wrote: > Hi, > > I know I can create a file and mount it like this: > > dd if=/dev/zero of=/tmp/somefile bs=1024 count=100000 > mke2fs /tmp/somefile > mount /tmp/somefile /mnt -o loop > > but that has a problem it cannot grow. > > Is there a way to do the same (above) but have it not restricted to a size? > > Or can I append blocks to the end of the file without distroying it? > > > > Jobst > > > >