Upgrade to pinstripe dies during copy of stage2 image when there is
insuficient room in /. It leaves the incomplete image /rhinstall-
stage2.img behind on the full partition.
Appeared on system with only 64MB root partition (stage2.img is >80MB).
Install could chek for free space first. Or better yet, try to copy to
different partition such as /tmp.
Worked-around by (before upgrade) creating a symlink /rhinstall-stage2.img that
points elsewhere with enough free space. The installer seemed to follow the
symlink with the image pre-copy.
Fixed in internal development tree.