fyi, recently few gwt jobs have been failing on out of space issue on some jenkins slaves on jenkins.ovirt.org. after looking into it, it seems some f19 slaves have /tmp mounted on tmpfs. it seems the 3GB assigned to it were not enough, and according to [1] that mount can be disabled. so i've made the change for jenkins-f19-slave02, and if anyone encounters this on another slave, you know what do to now. I haven't puppetized it since its requires a reboot. [1] https://fedoraproject.org/wiki/Features/tmp-on-tmpfs#Release_Notes (thanks ewoud for pointing me to it) the command needed: "systemctl mask tmp.mount", and reboot Eyal.