RHEL 7.0 uses xfs as default fs. But the first centos7rc automatically selects ext4 as default fs during the installation.<br />
<br />
The default fs is defined in pyanaconda/installclasses/rhel.py:<br />
<br />
class InstallClass(BaseInstallClass):<br />
...<br />
defaultFS = "xfs"<br />
<br />
Please check: <a href="https://git.fedorahosted.org/cgit/anaconda.git/tree/pyanaconda/installclasses/rhel.py?h=f19-branch">https://git.fedorahosted.org/cgit/anaconda.git/tree/pyanaconda/installclasses/rhel.py?h=f19-branch</a> [<a href="https://git.fedorahosted.org/cgit/anaconda.git/tree/pyanaconda/installclasses/rhel.py?h=f19-branch" target="_blank">^</a>]
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