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 -- Sendmail administration is not black magic. There are legitimate technical reasons why it requires the sacrificing of a live chicken. | |0| | Jobst Schmalenbach, jobst at barrett.com.au, General Manager | | |0| Barrett Consulting Group P/L & The Meditation Room P/L |0|0|0| +61 3 9532 7677, POBox 277, Caulfield South, 3162, Australia
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 > > > >
btw, here is the way to append more bytes on the tail, dd if=/dev/zero of=myfile bs=1 count=no_of_bytes seek=$(stat -c%s myfile) ------------ 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 > > > >