I think it would be a useful piece of information to know the exact cpu model in use on the host for anyone experiencing this problem. I wonder if they have realised that it is not required on certain processor models and so it no longer shows as a cpu flag. I just checked on my local system that is on 3.10.0-1062.4.1.el7.x86_64 and on a Xeon e3-1245v3 I still have md_clear listed in /proc/cpuinfo.
Now the OP said that they were using a Dell Rx20 which means it has a slightly older processor than mine. I can't check the other VM hosts that I have as none of those are yet running the 3.10.0-1062.4.1.el7.x86_64 kernel, still on 1.2.el7.
md_clear
Re: md_clear
The future appears to be RHEL or Debian. I think I'm going Debian.
Info for USB installs on http://wiki.centos.org/HowTos/InstallFromUSBkey
CentOS 5 and 6 are deadest, do not use them.
Use the FAQ Luke
Info for USB installs on http://wiki.centos.org/HowTos/InstallFromUSBkey
CentOS 5 and 6 are deadest, do not use them.
Use the FAQ Luke