yum安装出现以下错误：

Error: Depsolving loop limit reached.

Error: Package: cloog-ppl-0.15.7-1.2.el6.x86_64 (@anaconda-CentOS-201508042137.x86_64/6.7)

Requires: libgmp.so.3()(64bit)

Removing: gmp-4.3.1-7.el6_2.2.x86_64 (@anaconda-CentOS-201508042137.x86_64/6.7)

libgmp.so.3()(64bit)

Updated By: 1:gmp-6.0.0-12.el7_1.x86_64 (base)

Not found

Error: Package: grep-2.20-3.el6.x86_64 (@anaconda-CentOS-201508042137.x86_64/6.7)

Requires: libpcre.so.0()(64bit)

Removing: pcre-7.8-7.el6.x86_64 (@anaconda-CentOS-201508042137.x86_64/6.7)

libpcre.so.0()(64bit)

Updated By: pcre-8.32-15.el7_2.1.x86_64 (base)

Not found

Error: Package: 2:vim-enhanced-7.4.629-5.el6.x86_64 (@base)

Requires: perl(:MODULE_COMPAT_5.10.1)

Removing: 4:perl-5.10.1-141.el6.x86_64 (@anaconda-CentOS-201508042137.x86_64/6.7)

perl(:MODULE_COMPAT_5.10.1)

Updated By: 4:perl-5.16.3-291.el7.x86_64 (base)

Not found

Error: Package: ppl-0.10.2-11.el6.x86_64 (@anaconda-CentOS-201508042137.x86_64/6.7)

Requires: libgmp.so.3()(64bit)

Removing: gmp-4.3.1-7.el6_2.2.x86_64 (@anaconda-CentOS-201508042137.x86_64/6.7)

libgmp.so.3()(64bit)

Updated By: 1:gmp-6.0.0-12.el7_1.x86_64 (base)

Not found

Error: Package: libgcj-4.4.7-16.el6.x86_64 (@anaconda-CentOS-201508042137.x86_64/6.7)

Requires: libgmp.so.3()(64bit)

Removing: gmp-4.3.1-7.el6_2.2.x86_64 (@anaconda-CentOS-201508042137.x86_64/6.7)

libgmp.so.3()(64bit)

Updated By: 1:gmp-6.0.0-12.el7_1.x86_64 (base)

Not found

You could try using --skip-broken to work around the problem

** Found 1 pre-existing rpmdb problem(s),'yum check' output follows:

setup-2.8.71-7.el7.noarch has installed conflicts filesystem < ('0','3',None): filesystem-2.4.30-3.el6.x86_

原因在于下载的yum源与文件系统等级不一致造成该错误！

只需要下载对应版本的网络yum源即可