x86: Root(/) File System is at Full (100%) After Installing With Minimal Filesystem Sizes (6557276)

The root(/) file system might be full (100%) when you do all the following steps:

1. You choose to modify the default filesystem layout.

2. You split the filesystems into root(/), /var, /opt, and /usr.

3. You accept the minimal filesystem sizes provided by the installer.

The system might not be able to reboot and might display the following message:

notice: realloccg: / file system full

Workaround: When splitting filesystems, add 25-50% to the minimal size of the root(/) filesystem.