I need to help someone create a XEN virtual machine with a disk that is 70GB, but they don't want to have a 70GB file on the host initially.

In Virtual Box, this is called "dynamically allocated". In VMWare there's a similar concept.

To be clear, once I install Linux in that virtual machine, the file in the host machine should be a few GB, then over time it will grow to 10BG and maybe more. But the probability is that it will stay around 15GB.

And as his host machine hosts 10s of virtual machines, he does not want each of them to have a storage sized for the worse case.

So any way, my question is does XEN have this kind of features? and if yes, can you point me in the right direction (howto document, etc ...).

Thanks,

Georges

I have never used xen. See this for help. http://wiki.prgmr.com/mediawiki/inde..._with_Xen#QCOW

anyone else has the answer?

Thanks

Did you read that link I posted?