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.

*Erik R. Serrano Saavedra*
*Ingeniero de Sistemas Informáticos*
* Data Base Administrator*

* eserranos(at)gmail(dot)com <eserranos(at)gmail(dot)com>*
* 998596691*