Upgrade from 9.2 to 9.6 without space

Hello good day.

I am writing why I need guidance regarding a version upgrade in Postgresql. I have a server with 85% of the disk occupied only in the / var / lib / pgsql / data folder and when doing an upgrade it drops because it does not have space to create the new / var / lib / pgsql folder /9.6/data in your process.
So I need to know if there is any procedure to upgrade without making a copy since I do not have space for another folder of the same size.

PS: I am upgrading from 9.2 to 9.6

I hope they can help me
From already thank you very much

Erik Serrano S.