代码的级别

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代码有这几种级别：1）可编译，2）可运行，3）可测试，4）可读，5）可维护，6）可重用。通过自动化测试的代码只能达到第3）级，而通过Code Review的代码至少会在第4）级甚至更高。

找找自己的问题

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不管遇到什么傻逼，再怎么不爽，尤其这个人还是你的下属。 保持冷静，解决问题是一方面，另一方面想想自己的问题： 你为什么要用他，当初为什么你雇了个傻逼来了 你怎么用他了，假设最开始不是个傻逼，为什么用着用着变傻逼了 好了，我冷静下来了，傻逼爱上哪去上哪去吧，不跟傻逼一般见识。

【转】Openstack make volume deletion super fast

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转自：https://udaraliyanage.wordpress.com/2014/05/24/openstack-make-volume-deletion-super-fast/ In my Folsom Openstack setup intalled by DevStack, it takes more than 5minutes to delete a volume with the size 50 GB. Why it takes a longer time. When a volume is deleted, Openstack tries to clean the memory allocated for the volume. Volume memory is cleaned by writing zeros to the volume (dd … [Read more…]

【转】How to Create and Setup LUNs using LVM in “iSCSI Target Server” on RHEL/CentOS/Fedora – Part II

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转自：http://www.tecmint.com/create-luns-using-lvm-in-iscsi-target/ LUN is a Logical Unit Number, which shared from the iSCSI Storage Server. The Physical drive of iSCSI target server shares its drive to initiator over TCP/IP network. A Collection of drives called LUNs to form a large storage as SAN (Storage Area Network). In real environment LUNs are defined in LVM, if so … [Read more…]

【转】Create Centralized Secure Storage using iSCSI Target on RHEL/CentOS/Fedora Part -I

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转自：http://www.tecmint.com/create-centralized-secure-storage-using-iscsi-targetin-linux/ iSCSI is a block level Protocol for sharing RAW Storage Devices over TCP/IP Networks, Sharing and accessing Storage over iSCSI, can be used with existing IP and Ethernet networks such as NICs, Switched, Routers etc. iSCSI target is a remote hard disk presented from an remote iSCSI server (or) target. We don’t need a … [Read more…]