错误信息在第6行，从代码行开始数，空行不算。
即： Delta RPMs disabled because /usr/bin/applydeltarpm not installed.

前面有其他安装信息，太多，略去 ....... Install 1 Package Upgrade 66 Packages Total download size: 104 M Is this ok [y/d/N]: y Downloading packages: Delta RPMs disabled because /usr/bin/applydeltarpm not installed. lvm2-2.02.115-3.el7_1.1.x86_64.rpm | 897 kB 00:00:52 gnutls-3.3.8-12.el7_1.1.x86_64.rpm | 662 kB 00:02:07 kernel-tools-libs-3.10.0-229.14.1.el7.x86_64.rpm | 1.3 MB 00:00:45 ... kernel-tools-libs-3.10.0-229.14.1.el7.x86_64.rpm | 591 kB 00:00:32 ... openldap-2.4.39-7.el7.centos.x86_64.rpm | 233 kB 00:00:36 ... openldap-2.4.39-7.el7.centos.x86_64.rpm | 195 kB 00:00:33 ... coreutils-8.22-12.el7_1.2.x86_64.rpm | 0 B 00:00:30 ... coreutils-8.22-12.el7_1.2.x86_64.rpm ...... 后面有其他安装信息，太多，略去