Description of problem:

The / free-space check was included in foreman_maintain but it was from the perspective of yum not able to complete the package updates due to lack of disk space in /var/cache , under the assumption that it was residing under / itself.

Mostly people would have a seperate FS for /var or have a large enough /  to work with. And those with separate /var partition may not even need 4 GB free space in /.

There are some scenarios where Check fails even when there is plenty of space to handle the yum transaction

How reproducible:

Always when / partition available space < 4096 and /var/ has enough patition

Is this issue a regression from an earlier version:

No

Actual behavior:
The space_available Check fails

Expected behavior:
Check should be success as long as /var/cache had enough space