摘要：挂载逻辑卷后，尝试更新逻辑卷的文件系统 [root@server lost+found]# umount /new_room/ umount: /new_room: target is busy. (In some cases useful info about processes that use 阅读全文

摘要：openstack compute service list The server is currently unavailable. Please try again at a later time.<br /><br />The Keystone service is temporarily u 阅读全文

摘要：首先看我的报错 [Errno 14] curl#6 - "Could not resolve host: mirrors.aliyun.com; Unknown error" yum源配置出现了问题 cd /etc/yum.repos.d/ vi local.repo#里面装的是Centos-7.r 阅读全文