发布时间：2019-08-26 16:36:20
最近小编我连续几天接到了大量关于服务器断电后的各种数据丢失，有的是意外断电导致服务器无法启动了，有的是服务器可以启动但是虚拟机丢失了，还有的是服务器断电后有多块硬盘出现故障离线了等等.....（怎么好像最近全国各地的机房供电都不太稳定的样子）。现在我们言归正传，通过对其中一例服务器断电导致数据丢失的案例.........【阅读全文】
发布时间：2019-08-22 15:44:37
一、故障环境描述客户使用MD1200磁盘柜+RAID卡的方式，创建一组RAID5阵列，分配一个LUN共55T左右，在Linux系统层面对LUN进行分区，划分sdc1和sdc2两个分区，其中sdc1分区大小为2T，通过LVM扩容的方式，将sdc1分区加入到了root_lv中，剩余的sdc2分区格式化为XFS文件系统使用。客户在对服务器进行重装系统操作后，发现sd.........【阅读全文】
发布时间：2019-08-20 16:21:50
修复损坏的gzip压缩文件之原理篇，再次引用GZIP结构图：已知修复一个损坏的gzip文件的关键环节在于找到下一个正常压缩包的起始点。根据结构图中的信息可知，每个压缩包的开始结构中有是否到达尾部标志、使用的哈夫曼树类型、以及3个哈夫曼树的树元素个数等。如果某个gzip文件中间有一个坏扇区，要找到坏扇区后的一个正常.........【阅读全文】
发布时间：2019-08-08 17:10:53
VSAN是一种以vSphere内核为基础进行开发、可扩展的分布式存储架构。VSAN通过在vSphere集群主机当中安装闪存和硬盘来构建VSAN存储层，由VSAN进行控制和管理，形成一个供vSphere集群使用的统一共享存储层。vSphere基础架构中的存储正在发生变化，传统的基于LUN的存储管理机制将存储能力应用于数据存储级别。底层存储阵列不了.........【阅读全文】
发布时间：2019-08-07 15:05:08
在SQL SERVER2005以上版本中，数据页默认开启checksum，标识为m_flagBits & 0x200 == True，其值m_tornBits位于页头0x3C，4字节。其算法概述如下：点击(此处)折叠或打开读8KB 进BUF将BUF头部 CHECKSUM的4字节值清0uint32 checksum = 0 //初始checksumfor i in ra.........【阅读全文】
JVDLFFLR2025-08-03 18:40
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